Kohler 6VSG 24VDC Generator Sets User Manual
- June 4, 2024
- Kohler
Table of Contents
6VSG 24VDC Generator Sets
Operation
DC Generator Sets
Models:
6VSG
24VDC 36VDC 48VDC Controller:
VSC
TP-6843 12/21d
WARNING: This product can expose you to chemicals, including carbon monoxide and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65warnings.ca.gov
Product Identification Information
Product identification numbers determine service parts. Record the product
identification numbers in the spaces below immediately after unpacking the
products so that the numbers are readily available for future reference.
Record field-installed kit numbers after installing the kits.
Generator Set Identification Numbers Record the product identification numbers
from the engine nameplate(s). Model Designation
__ Specification Number
Serial Number:
Controller Identification Record the controller description from the generator
set operation manual, spec sheet, or sales invoice. Controller
Description____
Engine Identification Record the product identification information from the
engine nameplate.
Manufacturer___
Model Designation_
Serial Number___
Accessory Number
Accessory Description
Accessory Number
Accessory Description
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Table of Contents
Safety Precautions and Instructions ……………………………………………………………………………………………………………………….5
Introduction …………………………………………………………………………………………………………………………………………………………11
Service Assistance……………………………………………………………………………………………………………………………………………….13
Section 1.
Descriptions and Service Views ……………………………………………………………………………………………..15
1.1 Introduction …………………………………………………………………………………………………………………………………………15
1.2 Engine………………………………………………………………………………………………………………………………………………..15
1.3 Generator Set Enclosure……………………………………………………………………………………………………………………….15
1.4 Alternator…………………………………………………………………………………………………………………………………………….15
1.5 Controller…………………………………………………………………………………………………………………………………………….16
1.6 Accessories…………………………………………………………………………………………………………………………………………18
1.6.1 Carburetor Heater …………………………………………………………………………………………………………………… 18
1.6.2 OnCue® Plus Generator Management System ……………………………………………………………………………18
1.6.3 Programmable Interface Module (PIM) ……………………………………………………………………………………….18
1.6.4 Communications Kit …………………………………………………………………………………………………………………18
1.6.5 Oil Makeup Kit…………………………………………………………………………………………………………………………18
1.7 Service Views………………………………………………………………………………………………………………………………………19
Section 2.
Generator Set Operation ……………………………………………………………………………………………………….. 21
2.1 Theory of Operation ……………………………………………………………………………………………………………………………..21
2.2 Prestart Checklist …………………………………………………………………………………………………………………………………22
2.3 Exercising the Generator Set …………………………………………………………………………………………………………………22
2.4 Generator Set Operation ……………………………………………………………………………………………………………………….22
2.4.1 Local Starting and Stopping ………………………………………………………………………………………………………22
2.4.2 Remote Starting and Stopping …………………………………………………………………………………………………..22
2.4.3 Engine Start Crank Cycle………………………………………………………………………………………………………….22
2.4.4 Engine Cooldown…………………………………………………………………………………………………………………….23
2.4.5 Automatic Operation ………………………………………………………………………………………………………………..23
2.5 Exercise ……………………………………………………………………………………………………………………………………………..24
2.6 Faults …………………………………………………………………………………………………………………………………………………24
2.6.1 Warnings………………………………………………………………………………………………………………………………..24
2.6.2 Shutdowns ……………………………………………………………………………………………………………………………..24
2.6.3 Resetting the Controller After a Fault Shutdown …………………………………………………………………………..25
Section 3.
VSC Controller Operation……………………………………………………………………………………………………….27
3.1 VSC Generator Set Controller ……………………………………………………………………………………………………………….. 27
3.2 Control and Indicators …………………………………………………………………………………………………………………………..27
3.2.1 Controller Keypad ……………………………………………………………………………………………………………………28
3.2.2 LED Indicators ………………………………………………………………………………………………………………………..29
3.2.3 LCD Display ……………………………………………………………………………………………………………………………29
3.3 Controller Power…………………………………………………………………………………………………………………………………..30
3.4 Battery Charging ………………………………………………………………………………………………………………………………….30
3.5 Changing Settings ………………………………………………………………………………………………………………………………..31
3.5.1 Procedure to Change Settings …………………………………………………………………………………………………..31
3.6 Setting the Exerciser …………………………………………………………………………………………………………………………….33
3.6.1 Setting the Exerciser at Controller Power-up ……………………………………………………………………………….33
3.6.2 Changing the Exercise Settings …………………………………………………………………………………………………33
3.7 VSC Controller Menus…………………………………………………………………………………………………………………………..33
3.8 Main Menu ………………………………………………………………………………………………………………………………………….34
3.9 Overview Menu ……………………………………………………………………………………………………………………………………35
3.10 Engine Metering Menu ………………………………………………………………………………………………………………………….36
3.11 Generator Metering Menu ……………………………………………………………………………………………………………………..37
3.11.1 Calibration………………………………………………………………………………………………………………………………37
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3.12 Generator Set Information Menu …………………………………………………………………………………………………………….38
3.13 Genset Run Time Menu ………………………………………………………………………………………………………………………..39
3.14 Genset System Menu……………………………………………………………………………………………………………………………39
3.14.1 Adjusting the Display Contrast …………………………………………………………………………………………………..41
3.14.2 System Parameters for Battery Bank Charging ……………………………………………………………………………41
3.14.3 Setting the Exerciser………………………………………………………………………………………………………………..43
3.15 Date and Time Menu…………………………………………………………………………………………………………………………….45
3.16 Networking Information Menus……………………………………………………………………………………………………………….46
3.16.1 Networking Status Submenu……………………………………………………………………………………………………..47
3.16.2 Networking Configuration Submenu (OnCue® Password) …………………………………………………………….48
3.16.3 RBUS Information ……………………………………………………………………………………………………………………49
3.16.4 Remote Devices Submenu ……………………………………………………………………………………………………….50
3.17 Programmable Interface Module (PIM) Status Menu …………………………………………………………………………………51
3.18 Event Log …………………………………………………………………………………………………………………………………………… 52
3.18.1 Procedure to View Event History ……………………………………………………………………………………………….52
Section 4.
Scheduled Maintenance ………………………………………………………………………………………………………… 53
4.1 Scheduled Maintenance………………………………………………………………………………………………………………………..53
4.1.1 Service Schedule, 6VSG Models ……………………………………………………………………………………………….54
4.2 Lubrication System……………………………………………………………………………………………………………………………….55
4.2.1 Low Oil Pressure Shutdown………………………………………………………………………………………………………55
4.2.2 Oil Check ……………………………………………………………………………………………………………………………….55
4.2.3 Engine Oil Recommendation …………………………………………………………………………………………………….55
4.2.4 Oil Change Procedure………………………………………………………………………………………………………………56
4.2.5 Resetting the Maintenance Timer ………………………………………………………………………………………………57
4.3 Spark Plugs…………………………………………………………………………………………………………………………………………57
4.4 Air Cleaner Service ………………………………………………………………………………………………………………………………58
4.5 Cooling System ……………………………………………………………………………………………………………………………………59
4.6 Exhaust System …………………………………………………………………………………………………………………………………..59
4.7 Engine Starting Battery …………………………………………………………………………………………………………………………60
4.8 Storage Procedure ……………………………………………………………………………………………………………………………….62
4.8.1 Lubricating System ………………………………………………………………………………………………………………….62
4.8.2 Fuel System ……………………………………………………………………………………………………………………………62
4.8.3 Cylinder Lubrication …………………………………………………………………………………………………………………62
4.8.4 Exterior Preparation …………………………………………………………………………………………………………………62
4.8.5 Battery…………………………………………………………………………………………………………………………………… 62
Section 5.
Troubleshooting ……………………………………………………………………………………………………………………. 63
5.1 Introduction …………………………………………………………………………………………………………………………………………63
5.2 Fault Messages……………………………………………………………………………………………………………………………………63
5.3 Circuit Protection………………………………………………………………………………………………………………………………….63
5.3.1 Controller Internal Circuit Protection …………………………………………………………………………………………..63
5.3.2 Line Circuit Breaker………………………………………………………………………………………………………………….63
5.4 Controller USB Port………………………………………………………………………………………………………………………………63
5.5 Troubleshooting……………………………………………………………………………………………………………………………………64
Appendix A.
Abbreviations ………………………………………………………………………………………………………………………..65
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Safety Precautions and Instructions
IMPORTANT SAFETY INSTRUCTIONS. Electromechanical equipment, including
generator sets, transfer switches, switchgear, and accessories, can cause
bodily harm and pose life-threatening danger when improperly installed,
operated, or maintained. To prevent accidents be aware of potential dangers
and act safely. Read and follow all safety precautions and instructions. SAVE
THESE INSTRUCTIONS. This manual has several types of safety precautions and
instructions: Danger, Warning, Caution, and Notice.
DANGER
DANGER indicates a hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
NOTICE NOTICE is used to address practices not related to physical injury.
Safety decals affixed to the equipment in prominent places alert the operator
or service technician to potential hazards and explain how to act safely. The
decals are shown throughout this publication to improve operator recognition.
Replace missing or damaged decals.
Accidental Starting WARNING
Accidental starting. Can cause severe injury or death.
Disconnect the battery cables before working on the generator set. Remove the
negative () lead first when disconnecting the battery. Reconnect the negative
() lead last when reconnecting the battery.
Disabling the generator set. Accidental starting can cause severe injury or
death. Before working on the generator set or
equipment connected to the set, disable the generator set as follows: (1)
Press the generator set off/reset button to shut down
the generator set. (2) Disconnect the power to the battery charger, if
equipped. (3) Rem ove the battery cables, negative () lead first. Reconnect
the negative () lead last when reconnecting the battery. Follow these
precautions to prevent the starting of the generator set by the remote
start/stop switch.
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Battery WARNING
Sulfuric acid in batteries. Can cause severe injury or death.
Wear protective goggles and clothing. Battery acid may cause blindness and
burn skin.
WARNING
Explosion. Can cause severe injury or death. Relays in the battery charger
cause arcs or sparks.
Locate the battery in a well-ventilated area. Isolate the battery charger from
explosive fumes.
Battery electrolyte is a diluted sulfuric acid. Battery acid can cause severe
injury or death. Battery acid can cause blindness and burn skin. Always wear
splashproof safety goggles, rubber gloves, and boots when servicing the
battery. Do not open a sealed battery or mutilate the battery case. If battery
acid splashes in the eyes or on the skin, im mediately flush the affected area
for 15 minutes with large quantities of clean water. Seek immediate medical
aid in the case of eye contact. Never add acid to a battery after placing the
battery in service, as this may result in hazardous spattering of battery
acid.
Battery acid cleanup. Battery acid can cause severe injury or death. Battery
acid is electrically conductive and corrosive. Add 500 g (1 lb.) of
bicarbonate of soda (baking soda) to a container with 4 L (1 gal.) of water
and mix the neutrali zing solution. Pour the neutralizing solution on the
spilled battery acid and continue to add the neutralizing solution to the
spilled batte ry acid until all evidence of a chemical reaction (foaming) has
ceased. Flush the resulting liquid with water and dry the area.
Battery gases. Explosion can cause severe injury or death. Battery gases can
cause an explosion. Do not smoke or permit flames or sparks to occur near a
battery at any time, particularly when it is charging. Do not dispose of a
battery in a fire. To prevent burns and sparks that could cause an explosion,
avoid touching the battery terminals with tools or other metal objects. Remove
all jewelry before servicing the equipment. Discharge static electricity from
your body before touching batterie s by first touching a grounded metal
surface away from the battery. To avoid sparks, do not disturb the battery
charger connections while the battery is charging. Always turn the battery
charger off before disconnecting the battery connections. Ventilate t he
compartments containing batteries to prevent accumulation of explosive gases.
Battery short circuits. Explosion can cause severe injury or death. Short
circuits can cause bodily injury and/or equipment damage. Disconnect the
battery before generator set installation or maintenance. Remove all jewelry
before servicing the equipment. Use tools with insulated handles. Remove the
negative () lead first when disconnecting the battery. Reconnect the negative
() lead last when reconnecting the battery. Never connect the negative ()
battery cable to the positive (+) connection terminal of the starter solenoid.
Do not test the battery condition by shorting the terminals together.
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TP-6843 12/21
Engine Backfire/Flash Fire
WARNING
Risk of fire. Can cause severe injury or death.
Do not smoke or permit flames or sparks near fuels or the fuel system.
Servicing the fuel system. A flash fire can cause severe injury or death. Do
not smoke or permit flames or sparks near the carburetor, fuel line, fuel
filter, fuel pump, or other potential sources of spilled fuels or fuel vapors.
Catch fuels in an approved container when removing the fuel line or
carburetor.
Servicing the air cleaner. A sudden backfire can cause severe injury or death.
Do not operate the generator set with the air cleaner removed.
Combustible materials. A fire can cause severe injury or death. Generator set
engine fuels and fuel vapors are flammable and explosive. Handle these
materials carefully to minimize the risk of fire or explosion. Equip the
compartment or nearby area with a fully charged fire extinguisher. Select a
fire extinguisher rated ABC or BC for electrical fires or as recommended by
the local fire code or an authorized agency. Train all personnel on fire
extinguisher operation and fire prevention procedures .
Exhaust System WARNING
Carbon monoxide. Can cause severe nausea, fainting, or death.
The exhaust system must be leakproof and routinely inspected.
Generator set operation. Carbon monoxide can cause severe nausea, fainting, or
death. Carbon monoxide is an odorless, colorless, tasteless, nonirritating gas
that can cause death if inhaled for even a short time. Avoid breathing exhaust
fumes when working on or near the generator set. Never operate the generator
set inside a building unles s the exhaust gas is piped safely outside. Never
operate the generator set where exhaust gas could accumulate and seep back
inside a potentially occupied building.
Carbon monoxide detectors. Carbon monoxide can cause severe nausea, fainting,
or death. Install carbon monoxide detectors on each level of any building
adjacent to the generator set. Locate the detectors to adequately warn the
building’s occupants of the presence of carbon monoxide. Keep the detectors
operational at all times. Periodically tes t and replace the carbon monoxide
detectors according to the manufacturer’s instructions.
Carbon monoxide symptoms. Carbon monoxide can cause severe nausea, fainting,
or death. Carbon monoxide is a poisonous gas present in exhaust gases. Carbon
monoxide is an odorless, colorless, tasteless, nonirritating gas that can
cause death if inhaled for even a short time. Carbon monoxide poisoning
symptoms include but are not limited to the following:
Light-headedness, dizziness
Physical fatigue, weakness in joints and muscles
Sleepiness, mental fatigue, inability to concentrate or speak clearly, blurred
vision
Stomachache, vomiting, nausea If experiencing any of these symptoms and carbon
monoxide poisoning is possible, seek fresh air immediately and remain ac tive.
Do not sit, lie down, or fall asleep. Alert others to the possibility of
carbon monoxide poisoning. Seek medical attention if the condition of affected
persons does not improve within minutes of breathing fresh air.
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Fuel System WARNING
Explosive fuel vapors. Can cause severe injury or death.
Use extreme care when handling, storing, and using fuels.
The fuel system. Explosive fuel vapors can cause severe injury or death.
Vaporized fuels are highly explosive. Use extreme care when handling and
storing fuels. Store fuels in a well-ventilated area away from spark-producing
equipment and out of the reach of children. Never add fuel to the tank while
the engine is running because spilled fuel may ignite on contact with hot
parts or from sparks. Do not smoke or permit flames or sparks to occur near
sources of spilled fuel or fuel vapors. Keep the fuel lines and connections
tight and in good condition. Do not replace flexible fuel lines with rigid
lines. Use flexible sections to avoid fuel line breakage caused by vibration.
Do not operate the generator set in the presence of fuel leaks, fuel
accumulation, or sparks. Repair fuel systems before resuming generator set
operation.
Gas fuel leaks. Explosive fuel vapors can cause severe injury or death. Fuel
leakage can cause an explosion. Check the LPG vapor or natural gas fuel system
for leakage by using a soap and water solution with the fuel system test
pressurized to 6 8 ounces per square inch (1014 inches water column). Do not
use a soap solution containing either ammonia or chlorine because both prevent
bubble formation. A successful test depends on the ability of the solution to
bubble.
Hazardous Noise CAUTION
Hazardous noise. Can cause hearing loss.
Never operate the generator set without a muffler or with a faulty exhaust
system.
Engine noise. Hazardous noise can cause hearing loss. Generator sets not equipped with sound enclosures can produce noise levels greater than 105 dBA. Prolonged exposure to noise levels greater than 85 dBA can cause permanent hearing loss. Wear hearing protection when near an operating generator set.
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Hazardous Voltage/Moving Parts
DANGER
Hazardous voltage. Will cause severe injury or death.
This equipment must be installed and serviced by qualified electrical
personnel.
DANGER
Hazardous voltage. Moving parts. Will cause severe injury or death.
Operate the generator set only when all guards and electrical enclosures are
in place.
Grounding electrical equipment. Hazardous voltage will cause severe injury or
death. Electrocution is possible whenever electricity is present. Ensure you
comply with all applicable codes and standards. Electrically ground the
generator set and related equipment and electrical circuits. Turn off the main
circuit breakers of all power sources before servicing the equipment. Never
contact electrical leads or appliances when standing in water or on wet ground
because these conditions incr ease the risk of electrocution.
CAUTION
Welding the generator set. Can cause severe electrical equipment damage.
Welding on generator set will cause serious damage to engine electronic
controls components. Disconnect all engine electronic control connections
before welding.
Welding on the generator set. Can cause severe electrical equipment damage.
Before welding on the generator set perform the following steps: (1) Remove
the battery cables, negative () lead first. (2) Disconnect all engine
electronic control module (ECM) connectors. (3) Disconnect all generator set
controller and voltage regulator circuit board connectors. (4) Disconnect the
engine battery-charging alternator connections. (5) Attach the weld ground
connection close to the weld location.
Connecting the battery and the battery charger. Hazardous voltage will cause
severe injury or death. Reconnect the battery correctly, positive to positive
and negative to negative, to avoid electrical shock and damage to the battery
charger and battery(ies). Have a qualified electrician install the
battery(ies).
Short circuits. Hazardous voltage/current will cause severe injury or death.
Short circuits can cause bodily injury and/or equipment damage. Do not contact
electrical connections with tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.
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Heavy Equipment WARNING
Unbalanced weight. Improper lifting can cause severe injury or death and
equipment damage.
Do not use lifting eyes. Lift the generator set using lifting bars inserted
through the lifting holes on the skid.
Hot Parts WARNING
Hot engine and exhaust system. Can cause severe injury or death.
Do not work on the generator set until it cools.
Servicing the exhaust system. Hot parts can cause severe injury or death. Do
not touch hot engine parts. The engine and exhaust system components become
extremely hot during operation.
Servicing the engine heater. Hot parts can cause minor personal injury or
property damage. Install the heater before connecting it to power. Operating
the heater before installation can cause burns and component damage.
Disconnect power to the heater and allow it to cool before servicing the
heater or nearby parts.
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Introduction
This manual provides operation and maintenance instructions for the DC (direct
current) variable speed model 6VSG generator sets equipped with Kohler VSC
generator set controllers.
This generator set is approved for use in stationary applications in locations
served by a public utility, photovoltaic cells , wind turbines or any
combination of power sources tied to a battery bank. Have the generator set
installed by an authorized distributor/dealer or service technician. Refer to
Installation Manual, for installation instructions.
Information in this publication represents data available at the time of
print. Kohler Co. reserves the right to change this publication and the
products represented without notice and without any obligation or liability
whatsoever.
Read this manual and carefully follow all procedures and safety precautions to
ensure proper equipment operation and to avoid bodily injury. Read and follow
the Safety Precautions and Instructions section at the beginning of this
manual. Keep this man ual with the equipment for future reference.
The equipment service requirements are very important to safe and efficient
operation. Inspect the parts often and perform required service at the
prescribed intervals. Obtain service from an authorized service
distributor/dealer to keep equipment in top condition.
Figure 1 6VSG Generator Set
List of Related Literature
Figure 2 identifies related literature available for the generator sets covered in this manual. Only trained and qualified personnel should install or service the generator set.
Literature Type Installation Manual, Model 6VSG Generator Set Service Manual,
6VSG Generator Set Operation Manual, SiteTechTM Software User Guide, OnCue®
Plus Technical Manual, OnCue® Plus Installation Instructions, Programmable
Interface Module (PIM) Installation Instructions, Oil Makeup Kit Parts
Catalog, Model 6VSG
Figure 2 Related Literature
Part Number TP-6842 TP-6844 TP-6701 TP-7006 TP-7007 TT-1584 TT-1591 TP-6845
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11
Nameplate
The following illustration shows a typical generator set nameplate. Copy the
model, serial, and specification numbers from th e nameplate into the spaces
provided in the product information section on the inside front cover of this
manual. See the service views for the nameplate location.
Figure 3 Typical Nameplate
Emission Information
The Kohler Model CH740 engine used on the 6VSG generator set is certified to
operate using natural gas or LPG fuel. Refer to the certification label for
engine displacement. The exhaust emission control system for the CH740 engines
(6VSG) is EPA certified for all 50 states. See the Service View for engine
certification label location.
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Service Assistance
For professional advice and conscientious service, please contact your nearest Kohler distributor or dealer.
Visit the Kohler Co. website at KOHLERPower.com.
Look at the labels and decals on your Kohler product or review the appropriate
literature or documents included with the product.
Call toll free in the US and Canada
1-800-544-2444.
Outside the US and Canada, call the nearest regional office.
Headquarters Europe, Middle East, Africa (EMEA)
Kohler EMEA Headquarters
Netherlands B.V.
Kristallaan 1
4761 ZC Zevenbergen
The Netherlands
Phone: (31) 168 331630
Fax:
(31) 168 331631
Asia Pacific
Kohler Asia Pacific Headquarters
Singapore, Republic of Singapore
Phone: (65) 6264-6422
Fax:
(65) 6264-6455
China
North China Regional Office, Beijing
Phone: (86) 10 6518 7950
(86) 10 6518 7951
(86) 10 6518 7952
Fax:
(86) 10 6518 7955
East China Regional Office, Shanghai
Phone: (86) 21 6288 0500
Fax:
(86) 21 6288 0550
India, Bangladesh, Sri Lanka
India Regional Office
Bangalore, India
Phone: (91) 80 3366208
(91) 80 3366231
Fax:
(91) 80 3315972
Japan, Korea
North Asia Regional Office
Tokyo, Japan
Phone: (813) 3440-4515
Fax:
(813) 3440-2727
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Section 1. Descriptions and Service Views
1.1 Introduction
The generator set specification sheets provide specific generator and engine
information. Refer to the spec sheet for data not supplied in this manual.
Consult the generator set service manual, engine operation manual, and engine
service manual for additional specifications. Obtain copies of the latest spec
sheets, manuals, diagrams, and drawings from your local distributor/dealer.
1.2 Engine
The generator set has a four-cycle, twin cylinder, air-cooled Kohler engine.
The engine operates on clean-burning natural gas or LPG fuel. Engine features
include:
Efficient overhead valve design and full pressure lubrication for maximum
power, torque, and reliability under all operating conditions.
Dependable, maintenance-free electronic ignition. Precision-formulated cast
iron construction of parts subjected to the most wear and tear. Field-
convertible multi-fuel systems that allow fuel changeover from natural gas to
LPG (and vice versa) while
maintaining emission certification. The variable-speed engine runs at 2300 rpm
at no load and 2900 rpm when supplying full load.
1.3 Generator Set Enclosure
The generator set is housed in a steel enclosure with Power Armor powder coat
paint. The enclosure has a hinged, locking door that allows easy access to the
generator set controller when required, but locks securely to prevent
unauthorized access. To open the door, insert the tool provided with the
enclosure and turn counterclockwise ½ turn. Be sure to close and lock the
enclosure, and keep the tool in a secure location.
1.4 Alternator
The 6VSG is a direct current (DC) output machine. It utilizes a 24-pole
permanent magnet construction to create high frequency three-phase alternating
current which is rectified to produce low-ripple DC output.
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1.5 Controller
The Model 6VSG generator set comes equipped with the VSC controller. See
Figure 4. The controller provides integrated control for the generator set and
the optional programmable interface module (PIM) or optional communications
kit interface board. The controller’s two-line LCD screen displays status
messages and system settings that are clear and easy to read in all lighting
conditions, including direct sunlight and low light.
Figure 4 VSC Controller
GM89864
VSC Controller Features Six-button keypad o OFF, AUTO, and RUN pushbuttons o Select and arrow buttons for access to system configuration and adjustment menus LED indicators for OFF, AUTO, and RUN modes LED indicators for percentage of load being output LCD display o Two lines x 16 characters per line o Backlit display with adjustable contrast for excellent visibility in all lighting conditions Scrolling system status display o Generator set status o Voltage and percent load o Engine temperature o Oil pressure o Battery voltage o Engine runtime hours Date and time displays Smart engine cooldown senses engine temperature Digital voltage regulation: ±1.0% RMS no-load to full-load Automatic start with programmed cranking cycle
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Programmable exerciser can be set to start automatically on any future day and
time, and run every week or every two weeks
Three exercise modes Front-access mini USB connector for SiteTechTM connection
Integral Ethernet connector for Kohler® OnCue® Plus Built-in 2.5 amp battery
charger Remote two-wire start/stop capability Diagnostic messages
o Displays diagnostic messages for the engine, generator, and programmable
interface module (PIM) o Over 70 diagnostic messages can be displayed
Maintenance reminders System settings o System voltage and percent load o
Voltage adjustment o Measurement system, English or metric Programmable
Interface Module (PIM) status displays o Input status (active/inactive) o
Output status (active/inactive)
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1.6 Accessories
The following optional accessories are offered for the 6VSG generator sets.
1.6.1 Carburetor Heater
An optional carburetor heater is recommended for improved cold starting in
locations where the ambient temperature drops below 0°C (32°F). The carburetor
heater prevents condensation and carburetor icing. The heater requires a
continuous source of AC power. See the generator set Installation manual for
more information.
1.6.2 OnCue® Plus Generator Management System
The Kohler® OnCue® Plus Generator Management System is included with the
generator set. The OnCue® Plus System allows monitoring and control of your
generator set from your home or other location with Internet access using a
computer or mobile device. OnCue® Plus can be configured to send email or text
message notifications in the event of a generator set fault. You can also use
Google Assistant or Amazon Alexa and your smart device to control your
generator. Use voice commands to check your generator’s status, check for
active alerts, and start or stop an exercise. See the OnCue® Plus User Guide,
TP- 7006, for simple setup instructions and voice commands. OnCue® Plus
Wireless is also available. OnCue® Plus Wireless works with the customer’s
wireless Ethernet router and does not require the installation of a network
cable between the generator set and the customer’s router/modem.
1.6.3 Programmable Interface Module (PIM)
The optional Programmable Interface Module (PIM) provides two programmable
inputs and six programmable dry contact outputs for connection to customer-
supplied equipment. The outputs are controlled by the VSC controller, and can
also be controlled remotely using the OnCue® Plus program. The PIM is mounted
in a NEMA 3R aluminum enclosure, which can be mounted indoors or outdoors. See
the installation instructions provided with the PIM.
1.6.4 Communications Kit
The optional communications kit includes the following factory-installed
items: Interface board with factory-set inputs and outputs and customer
connection terminal blocks Fuel pressure switch Enclosure intrusion alarm
switch
1.6.5 Oil Makeup Kit
The oil makeup kit increases the oil capacity on 6VSG residential/commercial
generator sets. The kit includes a 2 qt. (1.9 L) oil reservoir and a large
sight gauge for the oil level. The kit is installed inside the enclosure on
the 6VSG generator set. The oil makeup kit extends the oil level check
interval by providing extra oil in the reservoir. See the Scheduled
Maintenance Section for the maintenance schedule and oil specifications.
Continue to change the engine oil at the intervals stated in the maintenance
schedule and use the recommended oil. Do not mix conventional and synthetic
oils.
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1.7 Service Views
2 7
3
9
10
8
12
1
4
14
5
6
16 12
13
17 15 21
20
18
19
1. Exhaust air outlet 2. Air cleaner 3. Oil fill 4. Oil drain 5. Oil drain valve 6. Oil filter 7. Muffler 8. Alternator air inlet 9. Customer connection blocks (located behind panel) 10. Electrical inlet access panel 11. Engine starting battery location (battery not included) 12. Lifting hole 13. Controller 14. Engine certification label 15. Load circuit breaker 16. Oil dipstick 17. Exhaust outlet 18. Fuel inlet 19. Electrical inlet 20. Battery cables (included) 21. Nameplate
Figure 5 Service View (see the next figures for optional kit components)
11
ADV-8060
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2 1
3 4
1. Interface board (factory-wired to terminal blocks) 2. Intrusion alarm
switch 3. Interface board input and output connection terminal blocks 4. Fuel
pressure switch
Figure 6 Optional Communications Kit Components
Oil bottle
Engine oil drain valve
Valve to sight gauge
ComKi tB GM85956F
Figure 7 Optional Oil Makeup Kit
See valve detail Sight gauge
20
Valve detail
GM85224
TP-6843 12/21
Section 2. Generator Set Operation
2.1 Theory of Operation
The generator set utilizes a permanent-magnet alternator to produce 3-phase AC
voltage. This voltage is rectified using a fullwave 3-phase rectifier (single
block rectifier for 36V and 48V, three individual rectifier blocks for 24V) to
produce low -ripple DC output. See Figure 8 and Figure 9.
Figure 8 Basic VSG Power Connections
KPS_105
KPS_106
Figure 9 Output Waveform, with Rectified Signal
The voltage is regulated to maintain a constant output voltage, which is equal
to the System Voltage setting. When the load o n the 6VSG generator increases,
the generator controller increases the engine speed. The 6VSG series is
designed to produce rated voltage at 2300 rpm with no load and at 2900 rpm
when supplying full load. The output current and power increase with the
engine speed. The engine speed is limited to a maximum of 3300 rpm. See the
System Parameters for Battery Bank Charging section for more information.
The VSC measures the average DC voltage on the output and lists this on the
auto-scrolling display, in the Overview menu and in the Generator metering
menu.
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2.2 Prestart Checklist
To ensure continued satisfactory operation, perform the following checks or
inspections before or at each startup, as designated, and at the intervals
specified in the service schedule. In addition, some checks require
verification after the unit starts. Air Cleaner. Check for a clean and
installed air cleaner element to prevent unfiltered air from entering the
engine. Air Inlets. Check for clean and unobstructed air inlets. Battery.
Check for tight battery connections. Consult the battery manufacturer’s
instructions regarding battery care and maintenance. Enclosure. Check that all
enclosure panels and internal baffling are in place. Exhaust System. Check for
exhaust leaks and blockages. Check the muffler condition.
Inspect the exhaust system components for cracks, leaks, and corrosion. Check
for tight exhaust system connections. Check for corroded or broken metal parts
and replace them as needed. Check that the exhaust outlet is unobstructed. Oil
Level. Check the oil level before starting the generator set and at the
intervals given in the Scheduled Maintenance section. Maintain the oil level
at or near, not over, the full mark on the dipstick. Operating Area. Check for
obstructions that could block the flow of cooling air. Keep the air intake
area clean. Do not leave rags, tools, or debris on or near the generator set.
2.3 Exercising the Generator Set
Operate the generator set without load once each week or every 2 weeks for 20
minutes. For instructions to set the exerciser, see the section titled:
Setting the Exerciser.
2.4 Generator Set Operation
2.4.1 Local Starting and Stopping
Start: Press the RUN button to immediately start the generator set. Stop:
Press the OFF button. The engine stops. Run the generator set with no load for
at least 2 minutes to ensure adequate engine cooldown.
2.4.2 Remote Starting and Stopping
The generator set must be in automatic mode for remote operation. Press the
AUTO button on the VSC controller. A remote switch connected to terminals 3
and 4 can be used to start and stop the generator set. Close the switch to
start and run the generator set. Open the switch to stop the generator set.
Run the generator set with no load for at least 2 minutes to ensure adequate
engine cooldown.
2.4.3 Engine Start Crank Cycle
The controller attempts to start the generator set three times (three crank
cycles, 15 seconds crank and 15 seconds off). If the generator set does not
start in three attempts, the system shuts down on an overcrank fault. See the
section titled: Faults. Cranking 1, 2, and 3 are displayed during the crank
cycle. Pressing the OFF button during the crank cycle stops the cranking. No
other buttons are acknowledged during the crank cycle.
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TP-6843 12/21
2.4.4 Engine Cooldown
The engine cooldown time delay allows the engine to run after the loads have
been removed.
The engine cooldown time delay is set to 5 minutes. The engine stops before
the cooldown time delay expires if the temperature drops below the cooled-down
temperature level, or if the temperature rises above the high limit during the
cooldown cycle.
2.4.5 Automatic Operation
The 6VSG monitors the voltage of a storage battery bank connected to (+) and
() of the output block to determine charge condition of the storage battery
(see Figure 10).
· If the storage battery voltage falls below the minimum voltage for more than
3 minutes, or if a remote start command is rec eived, the generator set
starts. A remote start command can be activated by closing the remote start
contacts across 3 and 4 or by a start exercise command.
· When the generator set load falls below the minimum % load for more than 3
minutes, or a remote stop command is received, the generator set stops. A
remote stop command can be caused by opening the remote start contacts across
3 and 4 or by the exercise time ending. The minimum voltage, minimum load, and
time delays are adjustable using a personal computer and Kohler® SiteTechTM
software. Contact your Kohler distributor.
Positive (+)
Negative ()
Figure 10 Output Block
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2.5 Exercise
The VSC controllers can be set to automatically run the generator set at the
same time and day each week. Exercising the generator set weekly or every two
weeks is required to keep the engine and alternator in good operating
condition. When power is applied to the VSC controller (that is, when the
battery is connected), you will be prompted to set the date an d time, and
then to set the exerciser. See the VSC Generator Set Controller section for
more information. An exercise can be started at any time using Kohler® OnCue®
Plus, or can start automatically according to the exercise schedule programmed
on the VSC controller. Three exercise modes are available. During some
exercise modes the engine speed increases and decreases. This is normal.
1. Unloaded Full Speed Exercise. The generator regulates the output load
below 5% of capacity. The generator will stop after 20 minutes.
2. Unloaded Cycle Exercise. The generator set engine speed varies during the
20-minute exercise according to the following cycle: a. The generator set
regulates the output load below 5% of capacity for 11 minutes to warm up. b.
The output regulation is moved to the Genset Maximum Percent Capacity for 3
minutes to test ability to output power. c. The load limit is returned to 5%
for 6 minutes to allow the generator to cool down before stopping.
3. Loaded Full Speed Exercise. The generator operates normally. Voltage is
regulated to Voltage Regulator Average Voltage Adjustment, and load is
regulated to Genset Maximum Percent Capacity. The generator stops after 20
minutes, regardless of the load on the generator.
2.6 Faults
The VSC controller displays fault messages for generator set warnings and
shutdowns. Selected fault messages are shown in the figure titled: Controller
Fault Messages.
2.6.1 Warnings
The controller displays a fault message but the generator set does not shut
down on a warning. The controller resets automatically after a warning
condition is corrected.
2.6.2 Shutdowns
Under a fault shutdown condition, the generator set shuts down automatically
and the controller displays a fault message. The OFF LED flashes. In some
cases, the engine cooldown cycle runs before the engine shuts down. See the
figure titled: Controller Fault Messages. Shutdown switches (such as the low
oil pressure switch or high engine temperature switch) on the generator set
will automatic ally reset when the problem is corrected. However, the fault
condition at the controller does not clear until the controller is reset. The
generator set cannot be restarted until the fault condition is corrected and
the controller is reset. See Resetting The Controller after a Fault Shutdown
for instructions.
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TP-6843 12/21
2.6.3 Resetting the Controller After a Fault Shutdown
Always identify and correct the cause of a fault shutdown before resetting the
controller. Check the fault message displayed on the controller and refer to
Figure 12 to identify and correct the fault condition before proceeding.
Contact an authorized distributor/dealer for service, if necessary. Press the
OFF button to reset the controller, or follow the procedure below. See Figure
11.
1. While the fault message is displayed, press the Select button to go to the
Overview menu. 2. Press Select again. The active fault message is displayed.
3. Press Select. Confirm Clear Fault: NO is displayed. 4. Press the UP arrow
button. Confirm Clear Fault: YES is displayed. 5. Press the Select button to
enter YES and clear the fault. 6. Press the Select button to return to the
overview menu. The controller changes to OFF mode. 7. Press AUTO to put the
generator set into automatic mode.
Fault Message
Overview —> 1.2 h
Fault Message
Confirm Clear Fault: NO
Press UP arrow button.
Confirm Clear Fault: YES
Figure 11 Clearing a Fault on the VSC Controller
tp6809
Fault Message
Warning (W) or Shutdown (SD)
Accy PwrOver Warning
W
Aux Input
SD *
Batt Chg Flt
W
Battery Voltage CrLow
W
Battery Voltage High
W
Battery Voltage Low
W
Enclosure Intrusion Alarm
W
Condition
Check
Accessory Power Overload. Too many devices on the accessory power port or an
over current fault (short circuit) on the accessory controller power output.
(Feeds RBUS devices – PIM) Auxiliary input. An optional customer-connected
input is closed. (Digital input from optional PIM.) Battery charger fault.
Input to PIM from an external battery charger (not the built-in battery
charger).
Engine starting battery voltage is critically low, less than 10.5 VDC.
Engine starting battery voltage rises above 16 VDC for more than 10 seconds.
Inhibited during the engine crank cycle. Clears when the battery voltage
returns to an acceptable level.
Engine starting battery voltage falls below 12.5 VDC for more than 90 seconds
when the engine is not running. Not operative during the engine crank cycle.
Clears when the battery voltage returns to an acceptable level.
The enclosure door is open. (Optional communications kit required.)
Contact an authorized distributor/dealer for service.
Check customer-supplied equipment.
Check external battery charger.
Check the battery rating and conditio n. Check the battery charger operation.
Charge or replace the battery.
Check the battery rating and conditio n. Check the battery charger operatio n.
Check the battery rating and conditio n. Check the battery charger operation.
Charge or replace the battery.
Check for evidence of unauthorized access to the generator set. Close and lock
the enclosure door.
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Fault Message
Warning (W) or Shutdown (SD)
Engine Oil Pressure Low
SD *
Fuel Pressure Low
Engine Speed High
Exer Not Sch
Generator VoltageL1-L2 High
Lo Crank Vlt
W SD W SD W
Locked Rotor
SD
MainPwrOverL Shutdown
SD
Not in Auto
W
Condition
The LOP switch indicates low oil pressure for more than 5 seconds. Function
becomes active 30 seconds after crank disconnect (30 second inhibit). Note:
The low oil pressure shutdown does not protect against low oil level. Check
the engine oil level regularly as recommended in Section 4. The fuel pressure
switch measures low fuel pressure (below 4.5 inches water column). (Optional
communications kit required.) Engine speed exceeds 115% of the normal running
speed for more than 0.3 seconds. Exercise not scheduled. No exercise is
scheduled on the contro ller.
Generator voltage high. Output voltage exceeds 120% of the system nominal
voltage for more than 2 seconds.
Low cranking voltage. Battery voltage falls below 8 VDC for more than 6
seconds while the starter is engaged.
No engine rotation is sensed during cranking. Shuts down 3 seconds after the
fault is detected.
Main power overload. An over current fault on the controller output (short
circuit). The generator set is not in Automatic (standby) mode. Remote start
and stop commands from a transfer switch or remote switch will be ignored.
Over Crank
SD
Three unsuccessful starting attempts.
Reserve Oil Empty
W
The oil makeup kit reservoir bottle is empty. (Optional communications kit and oil makeup kit required.)
Speed Sensor Fault
SD
Engine speed sensing has failed or engine stalled.
- Engine cooldown runs before shutting down.
Figure 12 Controller Fault Messages
Check
Check for leaks in the lubrication system. Check the oil level and add oil if
the level is low.
Check fuel supply and fuel lines.
Contact an authorized distributor/dealer for service. See Section 3.6 for
instructions to set the exerciser.
Contact an authorized distributor/dealer for service.
Charge or replace the battery.
Check the battery. Check for loose connections. Contact an authorized
distributor/dealer for service. Contact an authorized distributor/dealer for
service. Press AUTO to place the generator set in Automatic mode, when
appropriate. Check the fuel supply, spark plug, and battery. Check for loose
connections. Contact an authorized distributor/dealer for service. Add oil to
the oil makeup kit reservoir. Contact an authorized distributor/dealer for
service.
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TP-6843 12/21
Section 3. VSC Controller Operation
3.1 VSC Generator Set Controller
All 6VSG generator sets are equipped with the VSC generator set controller.
The VSC controls generator set and the optional Programmable Interface Module
(PIM) or Communications Kit. The VSC controller features include:
Two-line x 16 character backlit digital display with adjustable contrast OFF,
AUTO, and RUN generator set master control buttons Generator set status
indicating LEDs (OFF, AUTO, RUN) Up, Down, and Select buttons for navigation
through menus and adjustments Power system indicator LEDs to show power output
of the generator
3.2 Control and Indicators
Figure 13 illustrates the VSC controller. See Figure 14 for details of the
controller’s user interface.
User interface (see Figure 14)
USB connection
Figure 13 VSC Controls and Indicators
GM89864
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2-line LCD display
AUTO button and LED OFF button and LED
Up button Select button Down button
25% load LED
RUN button and LED
100% load LED 50% load LED 75% load LED
KPS_050 GM81498
Figure 14 VSC User Interface
3.2.1 Controller Keypad
The RUN, OFF, and AUTO buttons control the generator set as described in Figure 15. Use the Select, Up arrow, and Down arrow buttons to navigate through the menus and change settings, if necessary. See Section 2.4 for operation instructions.
Button
Button Function
RUN OFF
Starts the generator set. The engine start time delay is ignored.
Stops the generator set. The cooldown time delay is ignored. During the engine
crank cycle, pressing OFF will stop the crank cycle. Press OFF to clear faults
and reset the controller.
AUTO Down arrow Select Up arrow
Places the generator set in Automatic (standby) mode.
Use to navigate through menus and change settings. This manual contains
instructions to navigate the controller menus and adjust settings on the VSC
controller.
Figure 15 VSC Controller Pushbutton Operation
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3.2.2 LED Indicators
LEDs above the RUN, OFF, and AUTO buttons indicate the mode of operation as
shown in Figure 16. Load indication LEDs indicate the load on the generator
set. A steadily lighted LED indicates that the load on the generator set is
greater than or equal to the level label for that LED. The next LED flashes
and stays on for a longer time as the load inc reases.
LED RUN OFF
AUTO
LED Operation
Lights when the generator set has been started locally by pressing the RUN
button. Remote start and stop commands are ignored.
Lights for 2 seconds, then flashes every 2 seconds when the generator set and
controller are off. Remote start/stop commands have no effect. The exercise
cycle will not run.
In Auto mode, OFF LED flashes quickly to indicate a fault shutdown. Attention
required. Identify and correct the fault condition before resetting the
controller.
Lights when the generator is in automatic (standby) mode. Generator set will
respond to engine start and stop commands from the controller (for example,
exercise start and stop commands) or an ATS. Time delays operate as described
in Section 2.4.
25% load
LED flashes and stays on longer as load increases from 1% to 25%.
50% load 75% load 100% load
LED flashes and stays on longer as load increases from 26% to 50%. LED flashes and stays on longer as load increases from 51% to 75%. LED flashes and stays on longer as load increases from 76% to 100%.
Figure 16 VSC Controller LED Operation
3.2.3 LCD Display
The controller is equipped with a two-line x 16-character backlit digital
display with adjustable contrast. When the generator is running, the
controller automatically scrolls through the displays shown in Figure 17. The
VSC controller measures and displays the average DC output voltage on the
auto-scrolling display. W hen the system is in standby mode and the controller
is in AUTO, the screens shown in Figure 17 are displayed.
When a fault or warning condition exists, the controller will show the
corresponding message. See Fault section for more information about faults.
Controller menus display power system information, including status
information for the engine, generator, and optional RBUS accessories, exercise
settings, and event history. Some menus allow changes to the controller
settings. See the related sections in the manual for menu diagrams.
The display contrast is adjustable. Navigate to the Genset System menu and
step down to the Contrast screen. Press the Select button, and then use the up
and down arrow buttons to adjust the contrast. See the related sections in the
manual, Changing Settings, and Genset System Menu.
The display backlight turns off after about a minute of no activity. The
backlight turns on when a button is pressed or when the generator set starts.
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Active Alert
Genset Status Running
Voltage: 54V Load: 73%
Engine: 125F Oil Pressure: Okay
Battery 13.3V
Active Alert
Genset Status Standby
Battery 13.3V
Engine Runtime: 100.6 h
Date: 02DEC2011 Time: HR:MNpm
Engine Runtime: 100.6 h
Next Exercise: 09:00p 09Dec2011
Date: 02DEC2011 Time: HR:MNpm
Next Maintenance: 150 h or Mar2012
Generator running
Figure 17 Autopaging Displays, Generator Running and Automatic Mode
Automatic mode
Sample data shown.
3.3 Controller Power
The VSC controller is powered by the generator set engine starting battery and
the built-in battery charger. Note: To disconnect controller power, disconnect
the AC power to the generator set starting battery. If controller power is
disconnected and reconnected, you will be prompted to set the time, date, and
exerciser. The first setting will flash. Press the Up and Down arrow buttons
to change the setting. Press Select to save the setting and move on to the ne
xt. Repeat until all settings are saved and the controller returns to the main
menu. See the Changing Settings section for more detailed instructions to
change settings on the VSC. See the Setting the Exerciser section for more
detailed instructions to set the exerciser or change the exercise settings.
3.4 Battery Charging
The controller includes a built-in battery charger to maintain the engine
starting battery. The VSC controller monitors the battery voltage and provides
a constant 13.8 ±2% VDC voltage and maximum 2.5 amps to charge the battery.
The installer must connect 120 VAC/60Hz power on a breaker-protected circuit
for the built-in battery charger.
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TP-6843 12/21
3.5 Changing Settings
Some settings can be changed from the controller keypad. The controller
settings and generator set outp ut are factory-set and should not require
field adjustment under normal circumstances. Check and adjust the settings
and/or output when:
The controller has been replaced. The voltage requires adjustment for a
particular application. Troubleshooting generator set problems. Have
controller setup and adjustment performed only by an authorized Kohler
distributor/dealer or authorized representative. The following procedure
explains how to change settings. See the figure titled: Changing Settings for
an example using the Date and Time settings. Note: Use caution when navigating
the controller menus. In some menus, pressing the Select button can enable
editing of the controller settings. Changing the settings to incorrect values
can adversely affect generator set operation or render the unit inoperable.
3.5.1 Procedure to Change Settings
1. Press the Select button to enter the main menu. 2. Press the down arrow
button until the desired menu is displayed. 3. Press the Select button to
enter the genset system displays. See the figure titled: Overview Menu. 4.
Press the down arrow button to step through the generator set system settings.
5. To change any of the genset system settings, press the Select button. The
selected setting flashes. 6. Press the up or down arrow buttons to increase or
decrease the setting. 7. When the desired setting is shown, press Select. The
value stops flashing. If there are additional adjustable settings
on the screen, the next setting flashes. For example, in the date menu, the
day, month, and year can be adjusted. The settings are saved on completion of
step 7. 8. Repeat steps 6 and 7 for each setting on the screen. 9. Press the
down arrow to step to the next screen. 10. To exit, press the down arrow
button until Return is displayed. Press the Select button to exit the menu.
11. Press the AUTO or OFF button to exit the main menu. Note: If no buttons
are pushed, the controller exits the menus and returns to the generator set
status display after 5 minutes.
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Changing Date/Time
1. Press the Select button to enter the main menu.
Press:
Display:
Overview –> 1.2 h
8. When the correct date is shown, press the Select button. The saved date is shown.
Press:
Display:
Date 03Jan2012
2. Press the down arrow button until the desired menu is displayed. See the figure titled: VSC Main Menu. Date and Time are used for this example.
Press:
Display:
Date –> and Time
9. Press the down arrow button to step to the next menu.
Press:
Display:
Time: 01.49pm
3. Press the Select button to enter the Date and Time menu.
Press:
Display:
Date 05Dec2011
4. To change the date and time settings, press the Select button again. The year will flash.
Press:
Display:
Date 05Dec2011
5. Press the up or down arrow buttons to change the year.
Press:
OR Display:
Date 05Dec2012
10. Repeat steps 5 and 6, using the arrow and select buttons to set and save
the time. Note: To change from am to pm, press the up arrow key to increase
the hour until the correct hour and pm is displayed.
11. In the time format menu, press Select and then press the up or down arrow
button to change the format, 12 hr. or 24 hr. Press Select to save the
displayed format.
12. Press the down arrow button. Return is displayed.
Press:
Display:
<– Return
13. Press Select to return to the Date and Time menu.
Press:
Display:
Date –> and Time
6. When the correct year is shown, press the Select button. The year is saved and the next setting (month) flashes.
Press:
Display:
Date 05Dec2012
7. Repeat steps 5 and 6, using the arrow and select buttons to set the month and the date.
Figure 18 Changing Settings
14. Press the Up or Down arrow buttons to step to a different menu.
15. Press Auto to signal the controller to exit the menus and return to the
generator set status display.
Press: AUTO
Display:
Genset State Standby
Note: If no buttons are pressed, the controller returns to the status display after 5 minutes.
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3.6 Setting the Exerciser
Set the exerciser to automatically run the generator set for 20 minutes every
week or every two weeks.
3.6.1 Setting the Exerciser at Controller Power-up
When battery power is connected to the controller, you will be prompted to set
the date and time, and then to set the exercis er. The first setting will
flash. Press the Up and Down arrow buttons to change the setting. Press Select
to save the setting and move on to the next. See the Changing Settings section
for more detailed instructions to change settings on the VSC. If the battery
is disconnected and reconnected during generator set maintenance or service,
the time, date, and exercise settings will need to be re-entered.
3.6.2 Changing the Exercise Settings
See the Genset System Menu, Setting the Exerciser section for instructions to
change the exercise settings.
3.7 VSC Controller Menus
Controller menus display power system information, including status
information for the engine, generator, and optional RBUS accessories, exercise
settings, and event history. Some menus allow changes to the controller
settings. Diagrams in the following sections show how to navigate through the
menus. Note: Use caution when navigating the controller menus. In some menus,
pressing the Select button can enable editing of the controller settings.
Changing the settings to incorrect values can adversely affect generator set
operation or render the unit inoperable. If a setting on the controller
display is flashing, edit mode has been enabled. Press the OFF or AUTO button
to exit the edit mode.
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3.8 Main Menu
Press the Select button once to bring up the main menu. Overview is displayed.
See Figure 19. Press the down arrow button to step to the next menu, Engine
Metering. Use the UP and DOWN arrow buttons to step up and down through the
menus shown in Figure 19.
The controller will exit the main menu after 5 minutes if no buttons are
pressed. To exit the main menu immediately, press th e controller’s OFF or
AUTO button.
Status Displays
Overview —> 1.2 h
Press the Up and Down arrow buttons to move between menus. Press OFF or AUTO to exit the menus.
Engine —> Metering
Generator —> Metering
Date —> and Time
Genset —> Information
Network —> Information
Genset —> Run Time
PIM
—>
Status
Genset —> System
Event Log —>
Figure 19 VSC Main Menu
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TP-6843 12/21
3.9 Overview Menu
Overview —> 1.2 h
Active Alert (if any)
Genset Status Standby
Generator: 54V % Load 73%
Engine: 125F Oil Pressure: OK
Battery: 13.3V
Engine Runtime: 100.6 h
Date: 02DEC2011 Time: HR:MNpm
Next Exercise: 09:00p 09Dec2011
Next Maintenance: 150 h or Mar2012
SW Version: 4.06
<— Return
Figure 20 Overview Menu
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3.10 Engine Metering Menu
The engine metering menu displays engine status information as shown in Figure
21. This menu displays status information only. No settings can be changed
from this menu.
Engine —> Metering
Eng Speed: 2300 R/min
Oil Pressure: Switch: OK
Oil Temperature: 125 F
Battery: 13.3 V
<— Return
Figure 21 Engine Metering Menu
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TP-6843 12/21
3.11 Generator Metering Menu
The generator metering menu displays the generator voltage and % load. See the figure titled: Generator Metering Menu.
3.11.1 Calibration
DANGER
Hazardous voltage. Will cause severe injury or death.
Disconnect all power sources before opening the enclosure.
The calibration mode can be entered from the Generator Metering menu. Contact
a Kohler-authorized distributor/dealer for service.
The Reset Calibration menu allows you to set the readings back to the default
settings after calibration, if necessary. See Figure 22.
Generator –> Metering
Volts: 54.0V
Load: 73%
Reset Calibration
Reset Calib? No
<— Return
Calibration Reset
Figure 22 Generator Metering Menu
Reset Calib? Yes
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3.12 Generator Set Information Menu
The generator set model number and serial numbers are displayed (see Figure
23). No changes are allowed from this menu.
Model and serial numbers are factory-set and should not require changes in the
field, except in the event that the controller is being replaced. A personal
computer running Kohler® SiteTechTM software is required to enter the
generator set model number and serial numbers on a replacement controller.
Contact an authorized Kohler distributor/dealer for service.
Genset —-> Information
Genset M/N: 6VSG-48V
Genset S/N: Figure 23 Generator Set Information Menu
Controller S/N: ########
<—- Return
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3.13 Genset Run Time Menu
The data shown in Figure 24 are displayed. No changes are allowed from this
menu.
The Next Maintenance menu shows the number of hours of generator set operation
until maintenance is required. The estimated date for the next scheduled
maintenance is also displayed. The maintenance reminder intervals are based on
the engine manufacturer’s recommendation for changing the oil. See the
Scheduled Maintenance section, for maintenance instructions. After changing
the oil and performing other recommended maintenance, go to the Overview menu
to reset the maintenance timer. See the Resetting the Maintenance Timer
section for instructions to reset the maintenance timer.
Genset —-> Run Time
Eng Runtime: 100.6 h
Eng Starts: 127
Next Maintenance: 100 hours
<—- Return
Figure 24 Generator Set Run Time Menu
3.14 Genset System Menu
The genset system menu displays the system information shown in Figure 25.
Generator sets are factory-set and should not require changes to the system
settings in the field.
A Kohler-authorized distributor or dealer can adjust these settings, if
necessary. If the generator set is reconnected to a different voltage or the
system settings require adjustment for some other reason, see the Changing
Settings section for instructions to enable editing and change the system
settings.
Note: Use caution when navigating the controller menus. In some menus,
pressing the Select button can enable editing of the controller settings.
Changing the settings to incorrect values can adversely affect generator set
operation or render the unit inoperable.
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Genset —> System
System Voltage: 54.0V
Auto Start Volt: 50V
Auto Stop Load: 40%
Load Limit: 100%
Fuel Type: Natural Gas
Next Exercise * 1:00PM 02/12/1011
Exercise Mode: Loaded Ful Sp
Exercise Freq: Weekly
Language: English
Contrast: 50
<— Return * If the exerciser has not been set, No Exercise Sch will be
displayed.
Figure 25 Genset System Menu
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3.14.1 Adjusting the Display Contrast
To adjust the display contrast, use the down arrow button to step to the Contrast menu. Press the Select button, and then use the up and down arrow buttons to adjust the contrast. Press the Select button to save the contrast setting.
3.14.2 System Parameters for Battery Bank Charging
The following system parameters can be viewed in the Genset System menu on the user interface on the generator set’s VSC controller.
· System Voltage
· Auto Start Voltage
· Auto Stop Load (%)
· Load Limit
Note: Changing these settings can damage your generator set and batteries. Always refer to the information provided by the battery bank manufacturer for the correct voltage and charge current limits for your batteries. Contact an authorized Kohler distribu tor or dealer for assistance if the default settings are not appropriate for the battery bank.
System Voltage: The system voltage is the output voltage of the generator set. Default values are shown in Figure 26. The system voltage is set to the required output voltage to properly support the load and charge the battery. Do not confuse this value with the voltage designation of the battery stack. For example, four 12V batteries in series results in a 48V battery stack, but the output voltage needed to charge the battery stack is 54V.
Nominal Voltage Default System Voltage, VDC
24V 36V 48V 27 40.5 54
Figure 26 System Voltage Default Settings
Refer to the battery manufacturer’s documentation for the recommended charging voltage. If the system voltage needs to be changed, contact an authorized Kohler distributor or dealer.
Note: Setting the system voltage to a higher value than the factory default setting will decrease the power output of the generator set.
A 6VSG set at the system voltage shown in Figure 26 will have an output of 6 kW. If the system voltage is set to a higher value, the output current decreases. The available power output also decreases below 6 kW due to the limits on the engine speed. The graphs in Figure 27 illustrate the effect of changing the system voltage.
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Figure 27 Effect of Changing the System Voltage Setting
KPS_104
Auto Start Volt: The 6VSG will automatically start when the battery bank voltage has reached or fallen below this value for 180 seconds (3 minutes). Default settings are shown in Figure 28.
Nominal Voltage Default System Voltage, VDC
24V 36V 48V 25 37.5 50
Figure 28 Auto Start Voltage
Note: The 3-minute (180-second) time delay can be changed using a personal computer (laptop) and Kohler® SiteTechTM software. Contact a Kohler authorized distributor or dealer to adjust the delay setting, if necessary.
Auto Stop Load: The auto stop load is set as a percentage of full load. As the battery bank approaches the fully charged state, the charge rate slows, and the load on the generator set decreases. The 6VSG will automatically stop when the load has reached or fallen below the Auto Stop Load setting for 180 seconds (3 minutes). The default setting is 40% load.
Load Limit ( %): This setting limits the current output to the maximum charge rate specified by the battery manufacturer or load
in the application. The default setting is 100%, which gives the maximum current values shown in Figure 29. Refer to the battery manufacturer’s recommended maximum charge rate and contact an authorized Kohler distributor or dealer if the setting needs to be changed.
=
(
()
())
Nominal Voltage System Voltage, VDC Maximum Current at 100% Load Limit, Amps
24V 36V 48V 27 40.5 54 222 148 111
Figure 29 Maximum Charge Current at Default Load Limit Setting of 100%
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3.14.3 Setting the Exerciser
This section explains how to change the exercise settings after the initial
setup. Follow the procedure below and see the flowchart in Figure 30 to set
the exercise time and date, mode, and frequency. Procedure to Set the
Exerciser
1. Press the AUTO button on the controller. 2. Press the Select button to go
to the main menu. See the figure titled: VSC Main Menu. 3. Press the down
arrow button to step to the Genset System menu. 4. Press the Select button to
enter the Genset system menu. See the figure titled: Engine Metering Menu. 5.
Use the down arrow button to step to the Next Exercise menu. If the exerciser
is not set, No Exercise Scheduled will
be displayed. 6. Press and HOLD the Select button to enable editing. 7. Press
the Select button. The setting flashes to show that it can be changed. For
example, HR fl ashes to show that the
hour can be changed. 8. Press the Up or Down arrow buttons to change the
setting. 9. Press the Select button to save the setting and move to the next.
For example, save HR setting and move to MN. 10. Repeat steps 5 through 9 to
change the next item on the line until the desired settings are displayed. 11.
Press Select to save after all settings have been selected. Settings will stop
flashing. 12. Set the exercise frequency (weekly or every two weeks). Weekly
exercises are recommended. 13. Press the down arrow button to step to the
Return menu. Press the Select button to return to the main menu. After a
scheduled exercise run, the next exercise time and date will be updated
automatically based on the Exercise Frequency setting. Exerciser Reset To
reset the exerciser to run at a different day and/or time or to change the
exercise mode, follow the procedure in the Setting the Exerciser section to
change the exerciser settings.
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Genset –> System
System Voltage: 54.0V
Auto Start Volt: (V)
Auto Stop Load: (%)
Load Limit: (%)
Fuel Type: Natual Gas
Next Exercise * HR:MN PM MM/DD/YY
HOLD:
Next Exercise HR:MN PM MM/DD/YY
Exercise Mode: Loaded
Exercise Freq: Weekly
HOLD:
Exercise Mode: Loaded Full Sp Unloaded Cycle Loaded Full Sp
HOLD:
Exercise Freq: Weekly/Bi-Weekly
Language: English
Contrast: 50
<– Return * If the exerciser has not been set, No Exercise Sch will be
displayed.
Figure 30 Procedure to Set the Exerciser on the VSC Controller
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3.15 Date and Time Menu
The date and time will typically be set at controller powerup. To change the
date, time, or time format (12 hour or 24 hour), use the Date and Time menu.
See Figure 31.
Date and Time
Date: 02Dec2011
Time: 12:34pm
Time Format: 12hr
<— Return
To change the date and time, press the Select button. See the figure titled:
Changing Settings for instructions.
Figure 31 Date and Time Menu
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3.16 Networking Information Menus
Use the networking menus to view and adjust communication settings for systems
with remote RBUS devices such as a PIM, and for systems that use the Kohler®
OnCue® Plus Generator Management System. RBUS is a proprietary RS-485
communications protocol. The Networking Information menu leads to submenus for
network and RBUS communication settings. See Figure 32.
Networking —> Information
Networking —> Status
NS
See the figure titled: Network Status Submenu
Networking —> Configuration
RBUS —> Information
NC
See the figure titled: Network Configuration Submenu
RB
See the figure titled: VSC Information Submenu
<— Return
Figure 32 Networking Information Menu
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3.16.1 Networking Status Submenu
The Networking Status submenu contains settings for OnCue® Plus. See Figure
33. See the OnCue® Plus Software Operation Manual for information about the
appropriate network settings. Changes to these settings are not typically
required.
If DHCP is enabled, IP parameters are not displayed. If DHCP is disabled
(i.e., if a static IP address is used), the IP parameters are displayed.
To enable or disable DHCP and change the IP settings, go to the Networking
Configuration menu. See the Networking Configuration Submenu (OnCue® Password)
section.
Networking- –> Information
Networking- –> Status
OnCue Status: Connected
DHCP: Enabled
IP Address: 123.456.789.123
Subnet Mask: 123.456.789.123
Gateway: 123.456.789.123
DNS 1: 123.456.789.123
DNS 2: 123.456.789.123
Ethernet Status: Disconnected
OnCue Server: 123.456.789.123
<— Return
Figure 33 Network Status Submenu
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3.16.2 Networking Configuration Submenu (OnCue® Password)
The networking Configuration menu includes settings used for communication
with the Kohler® OnCue® Plus Generator Management System. See Figure 34.
For most applications, DHCP is enabled and the IP settings cannot be changed
from the controller keypad. If DHCP is enabled, IP parameters are not
displayed.
If DHCP is disabled (i.e., if a static IP address is required), then the IP
parameters can be modified. For applications that require static IP addresses,
press and hold the select button to enable editing, disable DHCP, and then
step to the next parameters and enter the information.
If an error occurs while setting a parameter, an error message is displayed
and then the controller exits the edit mode. Previous settings are preserved.
Password
For the initial OnCue® Plus setup, you will be required to reset the OnCue®
password on the VSC controller, and then enter it into the OnCue® Plus
software. To reset the password, follow the instructions in the figure titled:
Network Status Submenu.
Note: The password is displayed for only 10 seconds. Be sure to write down the
password and serial number.
A new password is generated each time the reset password procedure is
performed. If the password is reset after the OnCue® Plus system has been set
up, the connection will be lost. Enter the new password in OnCue® Plus to
reconnect.
Networking—> Information
Networking—> Status
Networking Configuration
Reset OnCue Password
DHCP: Enabled <— Return
HOLD
Reset OnCue Password? No
UP arrow for YES, Down arrow for NO.
Reset OnCue Password? Yes
Press Select to enter YES or NO as displayed. New password is displayed for
approximately 10 seconds.
S/N: 1234567 New PW: 12345
Figure 34 Network Configuration Submenu
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3.16.3 RBUS Information
The RBUS Information menu contains settings for remote modules that
communicate with the VSC controller using RBUS protocol (see Figure 35).
Networking—> Information
Networking—> Status
Networking—> Configuration
RBUS—> Information
<—- Return
Modules
Connected:
3
Remote —> Devices
Net Cycle Time: 123ms
Module Timeouts: 1234
Module Errors: 1234
<—- Return
RD
See the figure titled: Remote Devices Submenu
Figure 35 VSC Information Submenu
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3.16.4 Remote Devices Submenu
Check the status of remote devices communicating through RBUS (see Figure 36).
Device types can include: Programmable Interface Module (PIM) The serial
numbers for the PIM are printed on the circuit boards inside the enclosures.
From the figure titled: VSC Information Submenu
Remote —> Devices
S/N: XXXXXXXXX <<DeviceType>>
S/N: XXXXXXXXX <<DeviceType>>
<—- Return
Module Status: Connected
Comm. Errors: 12345
Comm. Timeouts: 12345
Module ID: 12
Firmware Ver.: 122
(Dis)Co nnec ted: MM/DD/YY 12:12 PM
Connected: Displays the date and time that the device was connected. Disconnected: Displays the last date and time of successful communication.
Return —>
Figure 36 Remote Devices Submenu
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3.17 Programmable Interface Module (PIM) Status Menu
Note: The PIM status menu appears if a programmable interface module (PIM) or
a communications kit interface board (IB) is connected.
The PIM status menu displays the status of inputs and outputs connected to the
programmable interface module (PIM) or communications kit interface board
(IB). See Figure 37. This is a status display menu only. Input and output
settings cannot be changed from the VSC controller’s user interface. A
personal computer running Kohler® SiteTechTM software is required to change
the input and output settings for the PIM. Contact an authorized distributor
or dealer for service.
The Kohler® OnCue® Plus Management System can be used to turn the PIM outputs
on and off. See the OnCue® Plus Software Operation Manual for instructions.
The input and output settings for the communications kit interface board are
factory set and locked.
PIM * Status:
PIM 1 —>
Input 1 In/Active
<— Return
Input 2 In/Active
Output 1: In/Active
Output 2: In/Active
Output 3: In/Active
Output 4: In/Active
Output 5: In/Active
Output 6: In/Active
<— Return
- PIM Status displays the interface board status if the optional communications kit with factoryinstalled interface board is installed.
Figure 37 Programmable Interface Module (PIM) Status Menu
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3.18 Event Log
The event log displays up to 1000 controller faults and notices, starting with
the most recent event. Events are numbered 1-1000, with 1 being the most
recent. Each event is displayed with the date and time of the event, the
number of the event, a code to indicate whether the event was a warning (W),
shutdown (S), or informational notice (I), the engine hours at the time of the
event, and the event description. See the figure titled: Event Log.
3.18.1 Procedure to View Event History
1. Press Select to enter the main menu. 2. Press the down arrow to step down
to the event log. 3. Press Select to display the most recent event. 4. Press
the down arrow to step to the next event. 5. Use the up and down arrow buttons
to view events. 6. Press the Select button to exit the event log. To stop
viewing the event history before the last event, press the select button to
return to the main menu.
Event Log —>
Date MO/DA/YEAR time HR:MN event number, W/S/I, engine hours event name
Press UP and Down arrow buttons to scroll through events
Date MO/DA/YEAR time HR:MN event number, W/S/I, engine hours event name
Press Select button at any time to return to the main menu.
Figure 38 Event Log
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Section 4. Scheduled Maintenance
The prestart checklist in the controller operation manual lists main areas of
the generator set that require attention. Some procedures may also require
using the generator set service manual or engine service manual.
Note: Have maintenance work, including battery service, performed by
appropriately skilled and suitably trained maintenance personnel familiar with
generator set operation and service.
Kohler recommends the use of Kohler Genuine oil, filters, and coolant for
maintenance and service.
WARNING
Accidental starting. Can cause severe injury or death.
Disconnect the battery cables before working on the generator set. Remove the
negative () lead first when disconnecting the battery. Reconnect the negative
() lead last when reconnecting the battery.
Disabling the generator set. Accidental starting can cause severe injury or
death. Before working on the generator set or
equipment connected to the set, disable the generator set as follows: (1)
Press the generator set off/reset button to shut down
the generator set. (2) Disconnect the power to the battery charger, if
equipped. (3) Rem ove the battery cables, negative () lead first. Reconnect
the negative () lead last when reconnecting the battery. Follow these
precautions to prevent the starting of the generator set by the remote
start/stop switch.
WARNING
Hot engine and exhaust system. Can cause severe injury or death.
Do not work on the generator set until it cools.
Servicing the exhaust system. Hot parts can cause severe injury or death. Do not touch hot engine parts. The engine and exhaust system components become extremely hot during operation.
DANGER
Hazardous voltage. Moving parts. Will cause severe injury or death.
Operate the generator set only when all guards and electrical enclosures are
in place.
Servicing the generator set when it is operating. Exposed moving parts will
cause severe injury or death. Keep hands, feet, hair, clothing, and test leads
away from the belts and pulleys when the generator set is running. Replace
guards, screens, and covers before operating the generator set.
4.1 Scheduled Maintenance
Refer to the following service schedules and the runtime hours displayed on
the controller display to schedule routine maintenance. Intervals are shown in
hours of operation and/or time intervals (i.e. weekly, monthly, quarterly,
etc.) Have an authorized distributor/dealer service the generator set at the
designated intervals in the service schedule for the life of t he generator
set. Service units subject to extreme weather, long operating hours, or dusty
or dirty conditions more frequently.
Contact an authorized distributor/dealer for parts.
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4.1.1 Service Schedule, 6VSG Models
System Component or Procedure
Visually Inspect
Fuel
Flexible lines and connections
X
Main tank supply level (if LPG fueled)
Fuel piping
X
Lubrication
Oil level
X
Oil level, with oil makeup kit
X
Crankcase breather hose
X
Change oil and filter (Kohler PRO 10W-50 oil and Kohler PRO filter only)
Change oil (conventional oil)
Replace filter (standard filter- non-pro filter)
Cooling
Air ducts, louvers
Exhaust Line
Leakage
X
Insulation, fire hazards
X
Obstructions or combustible materials near exhaust outlet
X
DC Electrical System
Battery charger operation, charge rate (if equipped)
X
Remove corrosion, clean and dry battery and rack
X
Clean and tighten battery terminals and inspect boots
X
Battery electrolyte level and specific gravity *
AC Electrical System
Tighten control and power wiring connections
Remote control system (if equipped)
Visible wear or damage
X
Wire abrasions where subject to motion
X
Wire-cable insulation condition
X
Engine and Mounting
Visible wear or damage
X
Air cleaner and precleaner service
Spark plugs
Replace stepper motor coupling and bushing
Generator
Visible wear or damage
X
Exercise generator set
Brushes and collector ring
D
Measure and record resistance readings of windings with insulation tester
(Megger®, with SCR assembly or
rectifier and load leads disconnected)*
General Condition of Equipment
Evidence of vibration, leakage, excessive noise, temperature, or deterioration
X
Interior of sound enclosure
X
- Not necessary for maintenance-free batteries.
Service more frequently under extremely dusty/dirty conditions. Megger® is a registered trademark of Biddle Instruments.
Procedure
Check Change Clean Test
R X X
X X
X
X X
X
X
X
X X X
X X
X
R X D
X D
D
X
X
X X Action D Authorized distributor/dealer only R Replace as necessary
Frequency
Quarterly Weekly Yearly
8 hrs. or before use 24 hrs. or before use
Yearly or 500 hour 300 hours
Yearly or 100 hours Yearly or 200 hours
Yearly
Weekly Yearly Weekly
Monthly Yearly Yearly Yearly
Yearly Monthly Quarterly 6 months 3 years or 500 hours
Weekly Yearly or 100 hours Yearly or 300 hours
500 hours
Quarterly Weekly Yearly
3 years
Weekly Quarterly
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4.2 Lubrication System
See the service schedules section for oil change and oil filter replacement
intervals. See the service views section for the oil drain, oil dipstick, oil
fill, and oil filter locations.
4.2.1 Low Oil Pressure Shutdown
The low oil pressure (LOP) shutdown feature protects the engine against
internal damage if the oil pressure drops below a minimum pressure because of
oil pump failure or other malfunction. Note: The LOP shutdown feature does not
protect against damage caused by operating when the oil level is low; it is
not a low oil level shutdown. Check the oil level regularly, and add oil as
needed.
4.2.2 Oil Check
The generator set is shipped with Kohler PRO 10W -50 oil. Before operating the
generator set, check the engine oil in the crankcase. See Figure 39. Maintain
the oil level at or near, not over, the full mark on the dipstick. Add Kohler
PRO 10W-50 synthetic oil when the oil level is low. Do not mix conventional
and synthetic oils. Check the oil level before each use. For extended
operation, check the oil level every 8 hours (24 hours if the oil makeup ki t
is installed). Do not check the oil level when the generator set is running.
Shut down the generator set and wait several minutes before checking the oil.
KPS_026
Figure 39 Oil Check (typical)
4.2.3 Engine Oil Recommendation
Use 5W -30 or Kohler PRO 10W -50 API (American Petroleum Institute) Service
Class SG, SH, or SJ synthetic oil. Synthetic oil oxidizes and thickens less
than other oils and leaves the engine intake valves and pistons cleaner. Note:
Units built in 2022 or later are factory-supplied with Kohler PRO 10W-50 oil.
Kohler PRO 10W -50 oil extends the oil change interval to 300 hours. If
conventional oil is used, the oil change interval is reduced to 100 hours. Do
not mix conventional and synthetic oils.
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4.2.4 Oil Change Procedure
Note: Drain the oil while it is still warm. Dispose of all waste materials (engine oil, fuel, filter, etc.) in an environmentally safe manner.
1. Drain the oil.
a. Press the OFF button on the generator set controller.
b. Disconnect the AC power to the generator set.
c. Disconnect the generator set engine starting battery, negative () lead first.
d. Open the housing service door and remove roof panel.
e. Clean the area around the dipstick and oil fill cap.
f. Close the valve between the oil drain valve tee and the sight gauge for the oil makeup kit (if equipped). See the Service Views for the valve location. It is not necessary to drain the oil from the oil makeup kit.
g. Remove the screw in plug on drain fitting in skid rail.
h. Open the oil drain valve on the engine.
i. Remove the dipstick and oil fill cap. Allow time for the engine oil to drain completely.
j. Close the oil drain valve. Replace the cap in skid rail.
k. Replace the dipstick.
2. Replace the oil filter.
a. Clean the area around the oil filter. Remove the oil filter by rotating it counterclockwise with an oil filter wrench.
b. Clean the gasket sealing surface of the oil filter adapter.
c. Apply a light coat of clean oil to the rubber seal of the new oil filter.
d. Install the new Kohler PRO extended life oil filter (25 050 53) following the instructions provided with the filter.
3. Fill with oil.
a. Fill the engine to the F mark on the dipstick. The engine oil capacity is shown in Figure 40. See the Engine Oil Recommendation section, for oil selection.
Figure 40
Generator Set Model 6VSG
Engine Oil Capacity
Oil Capacity, L (qt.) 1.9 (2.0)
b. Open the valve between the oil drain valve tee and the sight gauge for the oil makeup kit (if equipped).
c. Check the dipstick to confirm the oil level. Then reinstall the dipstick and the oil fill cap.
d. Reconnect the generator set engine starting battery, negative () lead last.
e. Reconnect the AC power to the generator set.
f. Press the RUN button on the generator set controller. The generator set will start.
g. Run the generator set for a minute to allow the oil pressure to reach operating range.
h. Stop the generator set, wait 1 minute, and then recheck the oil level. Add oil to bring the level up to the F mark on the dipstick.
4. Check for leaks.
a. Check for oil leaks.
b. Fix leaks and recheck the oil level.
c. Reinstall the roof panel and close service door.
5. Reset the maintenance timer on the controller.
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4.2.5 Resetting the Maintenance Timer
1. In the Overview menu, step down to the Next Maintenance screen. 2. Press
the Select button. 3. Press the Up arrow button so that Reset Maint Timer? Yes
is displayed. 4. Press the Select button. After about two minutes, the new
maintenance interval and date are displayed.
4.3 Spark Plugs
Reset the spark plug gap or replace the plugs with new plugs as necessary.
1. Clean the area around the base of the spark plug to keep dirt and debris out of the engine.
2. Remove the spark plug and check its condition. Replace the spark plug if it is worn or if its reuse is questionable.
3. Check the spark plug gap using a wire feeler gauge. See Figure 41 for the recommended spark plug gap. Adjust the gap by carefully bending the ground electrode. See Figure 42 and Figure 43.
4. Reinstall the spark plug into the cylinder head. Torque the spark plug to 24.4-29.8 Nm (18-22 ft. lb.)
Generator Set Model 6VSG
Spark Plug Gap 0.76 mm (0.030 in.)
Figure 41 Spark Plug Gap
Figure 42 Checking the Spark Plug Gap
KPS_027
Figure 43 Adjusting the Spark Plug Gap
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57
4.4 Air Cleaner Service
The engine has a replaceable high-density paper air cleaner element with an
oiled foam precleaner. See Figure 44.
Cover knob
Air cleaner cover
Element cover nut
Element cover
Foam precleaner
Air cleaner element
Air cleaner base
KPS_029
Figure 44 Air Cleaner Components Check for a buildup of dirt and debris around
the air cleaner system. Keep this area clean. Also check for loose or damaged
components. Replace all bent or damaged air cleaner components. Note:
Operating the engine with loose or damaged air cleaner components could allow
unfiltered air into the engine causing premature wear and failure. Precleaner
Service Use the following procedure to wash and oil the precleaner as
indicated in the service schedule. Wash and oil the precleaner more often
under extremely dusty or dirty conditions.
1. Press the OFF button on the generator set controller. 2. Disconnect the AC
power to the generator set. 3. Disconnect the engine starting battery,
negative () lead first. 4. Loosen the cover knob and remove the air cleaner
cover. Remove the precleaner from the paper element. Wash the
precleaner in warm water with detergent. Rinse the precleaner thoroughly until
all traces of detergent are eliminated. Squeeze out excess water (do not
wring). Allow the precleaner to air dry. 5. Saturate the precleaner with new
engine oil. Squeeze out all of the excess oil. 6. Reinstall the precleaner
over the paper element. 7. Reinstall the air cleaner cover. Secure the cover
with the cover knob. 8. Reconnect the power to the battery charger. 9.
Reconnect the generator set engine starting battery, negative () lead last.
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Paper Element Service Use the following procedure to replace the paper element
at the intervals specified in the service schedule. Replace the pape r element
more often under extremely dusty or dirty conditions.
1. Press the OFF button on the generator set controller. 2. Disconnect the AC
power to the generator set. 3. Disconnect the generator set engine starting
battery, negative () lead first. 4. Loosen the cover knob and remove the
cover. 5. Remove the element cover nut, element cover, and the paper element
with precleaner. 6. Remove the precleaner from the paper element.
Note: Do not wash the paper element or clean it with pressurized air, as this
will damage the element. 7. Replace the element if it is dirty, bent, or
damaged. 8. Check the air cleaner base. Make sure it is secure and not bent or
damaged. Also check the element cover for damage and fit. Replace all damaged
air cleaner components. Remove any loose dirt or debris from the air cleaner
base. Wipe the base carefully so that no dirt drops into the intake throat.
Check the condition of the rubber seal on the air cleaner stud and replace the
seal if necessary. 9. Reinstall the paper element, precleaner, element cover,
element cover nut, and the air cleaner cover. Secure the cover with the cover
knob. 10. Reconnect the AC power to the generator set. 11. Reconnect the
generator set engine starting battery, negative () lead last.
4.5 Cooling System
The engine fan draws cooling air through the openings in the sides. The
alternator fan draws cooling air throu gh an opening on the side wall of the
enclosure. The cooling air mixes with the engine exhaust and is discharged at
the exhaust outlet. See th e service view section for air intake and exhaust
locations. To prevent generator set damage caused by overheating , keep the
housing cooling inlets and outlets clean and unobstructed at all times. Note:
Do not block the generator set cooling air inlets or mount other equipment
above them. Overheating and severe generator damage may occur.
4.6 Exhaust System
Remove all combustible materials from the exhaust location. Combustible
materials include building materials as well as natural surroundings. Keep dry
field grass, foliage, and combustible landscaping material a minimum of 1.5 m
(5 ft.) from the exhaust outlet. Periodically inspect the exhaust system
components for cracks, leaks, and corrosion.
Check for corroded or broken metal parts and replace them as needed. Check
that the exhaust outlet is clear.
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4.7 Engine Starting Battery
WARNING
Sulfuric acid in batteries. Can cause severe injury or death.
Wear protective goggles and clothing. Battery acid may cause blindness and
burn skin.
Battery electrolyte is a diluted sulfuric acid. Battery acid can cause severe
injury or death. Battery acid can cause blindness and burn skin. Always wear
splashproof safety goggles, rubber gloves, and boots when servicing the
battery. Do not open a sealed battery or mutilate the battery case. If battery
acid splashes in the eyes or on the skin, im mediately flush the affected area
for 15 minutes with large quantities of clean water. Seek immediate medical
aid in the case of eye contact. Never add acid to a battery after placing the
battery in service, as this may result in hazardous spattering of battery
acid.
Battery acid cleanup. Battery acid can cause severe injury or death. Battery
acid is electrically conductive and corrosive. Add 500 g (1 lb.) of
bicarbonate of soda (baking soda) to a container with 4 L (1 gal.) of water
and mix the neutrali zing solution. Pour the neutralizing solution on the
spilled battery acid and continue to add the neutralizing solution to the
spilled batte ry acid until all evidence of a chemical reaction (foaming) has
ceased. Flush the resulting liquid with water and dry the area.
Battery gases. Explosion can cause severe injury or death. Battery gases can
cause an explosion. Do not smoke or permit flames or sparks to occur near a
battery at any time, particularly when it is charging. Do not dispose of a
battery in a fire. To prevent burns and sparks that could cause an explosion,
avoid touching the battery terminals with tools or other metal objects. Remove
all jewelry before servicing the equipment. Discharge static electricity from
your body before touching batterie s by first touching a grounded metal
surface away from the battery. To avoid sparks, do not disturb the battery
charger connections while the battery is charging. Always turn the battery
charger off before disconnecting the battery connections. Ventilate t he
compartments containing batteries to prevent accumulation of explosive gases.
Battery short circuits. Explosion can cause severe injury or death. Short
circuits can cause bodily injury and/or equipment damage. Disconnect the
battery before generator set installation or maintenance. Remove all jewelry
before servicing the equipment. Use tools with insulated handles. Remove the
negative () lead first when disconnecting the battery. Reconnect the negative
() lead last when reconnecting the battery. Never connect the negative ()
battery cable to the positive (+) connection terminal of the starter solenoid.
Do not test the battery condition by shorting the terminals together.
Refer to this section for general battery information and maintenance. Also
consult the battery manufacturer’s instructions for battery maintenance.
All generator set models use a negative ground with a 12-volt engine
electrical system. Consult the generator set nameplate for the engine
electrical system voltage. Consult the generator spec sheet for battery
capacity recommendations for replacement purposes. Wiring diagrams provide
battery connection information. See Figure 45 for typical battery connections.
22
23
22. To positive (+) terminal on starter solenoid 23. To ground () terminal
on or near starter motor
Figure 45 12-Volt Engine Electrical System Single Starter Motor, Typical
Battery Connection
60
TP-6843 12/21
Utility power for battery charging is connected to the generator set. Before
servicing the battery, disconnect the utility power by opening the circuit
breaker, which is typically located in the customer’s electrical distribution
box.
Clean the battery and cables and tighten battery terminals using the service
schedule recommendations. To prevent corrosion, maintain tight, dry electrical
connections at the battery terminals. To remove corrosion from battery
terminals, disconnect the cables from the battery and scrub the terminals with
a wire brush. Clean the battery and cables with a solution of baking sod a and
water. After cleaning, flush the battery and cables with clean water and wipe
them with a dry, lint-free cloth.
After reconnecting the battery cables, coat the battery terminals with
petroleum jelly, silicone grease, or other nonconducti ve grease.
TP-6843
12/21
61
4.8 Storage Procedure
Perform the following storage procedure before removing the generator set from
service for three months or longer. Follow the engine manufacturer’s
recommendations for storage, if available. Note: Run the generator set monthly
whenever possible.
4.8.1 Lubricating System
1. Operate the generator set until it reaches operating temperature, or about
15 minutes. 2. Stop the generator set. 3. While the engine is still warm,
drain the engine lubrication oil from the engine crankcase. 4. Refill engine
crankcase with oil. See the Engine Oil Recommendation section for oil
recommendations. 5. Run the generator set for a few minutes to distribute the
clean oil. 6. Stop the generator set.
4.8.2 Fuel System
1. Start the generator set. 2. With the generator set running, shut off the
gas supply. 3. Run the generator set until the engine stops. 4. Press the OFF
button on the generator set controller.
4.8.3 Cylinder Lubrication
1. Remove the spark plugs. 2. Pour one tablespoon of engine oil into each
spark plug hole. Install the spark plugs and ground the spark plug leads .
Do not connect the leads to the plugs. 3. Crank the engine two or three
revolutions to lubricate the cylinders.
4.8.4 Exterior Preparation
1. Clean the exterior surface of the generator set. 2. Seal all openings in
the engine with nonabsorbent adhesive tape. 3. Mask all areas to be used for
electrical contact. 4. Spread a light film of oil over unpainted metallic
surfaces to prevent rust and corrosion.
4.8.5 Battery
Perform battery storage last. 1. Press the OFF button on the generator set
controller. 2. Disconnect the battery, negative () lead first. 3. Clean the
battery. 4. Place the battery in a warm, dry location. 5. Connect the battery
to a float/equalize battery charger, or charge the battery monthly using a
trickle charger. Follow the battery charger manufacturer’s recommendations.
62
TP-6843 12/21
Section 5. Troubleshooting
5.1 Introduction
Use the troubleshooting charts in this section to diagnose and correct common
problems. First check for simple causes such as a dead engine starting
battery, loose connections, or an open circuit breaker. The charts include a
list of common problems, possible causes of the problem, and recommended
corrective actions. If the procedures in this manual do not explain how to
correct the problem, contact an authorized Kohler distributor/dealer. Maintain
a record of repairs and adjustments performed on the equipment. Use the record
to help describe the problem and repairs or adjustments made to equipment.
5.2 Fault Messages
The VSC controller displays fault messages to aid in troubleshooting. Selected
fault messages and recommended checks are listed in the figure titled:
Controller Fault Messages. Identify and correct the cause of the fault
condition. Then reset the controller after a fault shutdown. See the Resetting
the Controller After a Fault Shutdown section.
5.3 Circuit Protection
If the generator set circuit breaker trips repeatedly, contact an authorized
Kohler distributor/dealer for service.
5.3.1 Controller Internal Circuit Protection
The controller is equipped with internal circuit protection. A fault message,
Accy PwrOver Warning or MainPwrOverL Shutdown, is displayed if this internal
protection is activated. Press OFF to reset. Contact an authorized Kohler
distributor/dealer fo r service.
5.3.2 Line Circuit Breaker
The line circuit breaker interrupts the generator output in the event of a
fault in the wiring between the generator and the load. If the circuit breaker
trips, reduce the load and switch the breaker back to the ON position.
5.4 Controller USB Port
A USB port is located on the front panel of the controller. See Figure 46.
Some controller settings can be adjusted using a laptop computer with Kohler
SiteTechTM software. Use a USB cable with a mini-B connector to connect the
controller to your PC. See TP-6701, SiteTech Software Operation Manual, for
more information.
Figure 46 Controller USB Port
TP-6843
12/21
KPS_031A GM89864
63
5.5 Troubleshooting
Figure 47 contains generator set troubleshooting, diagnostic, and repair information. Check for loose connections before replacing parts.
Problem
Controller display backlight is off.
Possible Cause Backlight turns off after about 1 minute with no activity.
Controller display is off.
The generator set does not crank.
Low or no battery voltage.
Battery weak or dead. Battery connections reversed or poor. Fault shutdown.
Generator set in the OFF mode.
The generator set cranks but does not start, starts hard, lacks power, or
operates erratically.
No DC output.
Low output or excessive drop in voltage.
Air cleaner clogged. Battery weak or dead. Battery connection poor. Spark plug
wire connection loose. Low oil pressure shutdown.
Fuel pressure insufficient. Engine malfunction. Line circuit breaker in the
OFF position. Line circuit breaker tripping because of overload. Line circuit
breaker tripping because of short circuit. Rectifier has failed.
Generator set overloaded.
Low oil pressure shutdown.
Out of fuel. Overcrank shutdown.
Generator set stops suddenly.
Auxiliary winding circuit breaker tripped. Fault shutdown.
Generator set in the OFF mode.
Figure 47
Remote stop command received from a remote switch, or OnCue® Plus. Engine
malfunction.
General Troubleshooting Chart
Recommended Action Backlight will turn on when a button is pressed or the
generator set starts. Check connections. Check generator set battery. See the
figure titled: Service View. Recharge or replace the battery. Check the
connections. Check the controller display for fault messages. See the Faults
section. Correct the fault condition and reset the contro ller. Press the RUN
button to start the engine or press AUTO to allow remote starting. Clean
and/or replace the air cleaner. Recharge or replace the battery. Clean and
tighten the battery connections. Check the spark plug wires. Check for oil
leaks. Check the oil level and add oil if necessary. Check the fuel supply and
valves. Contact an authorized Kohler distributor/dealer. Place the circuit
breaker in the ON position. Reduce the load on the generator set. Contact an
authorized Kohler distributor/dealer for service. Verify that the generator is
providing AC voltage.
Reduce the load.
Check for oil leaks. Check the oil level and add oil if necessary. Check fuel
supply. Reset the controller. If the overcrank fault occurs again, contact an
authorized Kohler distributor/dealer. Reset the circuit breaker (located in
controller’s service access area). Contact an authorized Kohler
distributor/dealer for service if breaker trips repeatedly. Check the
controller display for fault messages. See the Faults section. Correct the
fault condition and reset the contro ller. Press the RUN button to start the
engine or press AUTO to allow remote starting.
Check the remote switch position. Check OnCue® Plus.
Contact an authorized Kohler distributor/dealer.
64
TP-6843 12/21
Appendix A. Abbreviations
A, amp ABDC AC A/D ADC
adj. ADV AGM Ah AHWT
AISI
ALOP alt. Al ANSI
AO APDC
API appro x. APU
AQMD AR AS
ASE ASME
assy.
ASTM
ATDC ATS auto. aux. avg. AVR AWG
AWM bat. BBDC BC
BCA BCI BDC BHP blk.
ampere after bottom dead center alternating current analog to digital advanced
digital control; analog to digital converter adjust, adjustment advertising
dimensional drawing absorbent glass mat amp-ho ur anticipatory high water
temperature American Iron and Steel Institute
anticipatory low oil pressure alternator aluminum American National Standards
Institute (formerly American Standards Association, ASA) anticipatory only Air
Pollution Control District
American Petroleum Institute approximate, approximately Auxiliary Power Unit
Air Quality Management District as required, as requested as supplied, as
stated, as suggested American Society of Engineers American Society of
Mechanical Engineers Assembly
American Society for Testing Materials after top dead center automatic
transfer switch Automatic auxiliary average automatic voltage regulator
American Wire Gauge
appliance wiring material Battery before bottom dead center battery charger,
battery charging
battery charging alternator Battery Council International before dead center
brake horsepower black (paint color), block (engine)
blk. htr. BMEP bps br. BTDC
Btu Btu/min. C cal. CAN
CARB
CAT5 CB CC cc
CCA ccw.
CEC cert. cfh
cfm CG CID
CL cm
CMOS
com
coml Coml/Rec conn. cont. CPVC crit. CRM
CSA CT Cu cUL
cu. in. cw. CWC cyl. D/A
block heater brake mean effective pressure bits per second Brass before top
dead center
British thermal unit British thermal units per minute Celsius, centigrade
Calorie controller area network
California Air Resources Board
Category 5 (network cable) circuit breaker crank cycle cubic centimeter
cold cranking amps Counterclockwise
Canadian Electrical Code certificate, certification, certified cubic feet per
hour
cubic feet per minute center of gravity cubic inch displacement
centerline centimeter
complementary metal oxide substrate (semiconductor) communications (port)
commercial Commerci al/Rec reatio nal Connection continued chlorinated
polyvinyl chloride Critical Common Rail Manifold
Canadian Standards Association current transformer copper Canadian
Underwriter’s Laboratories cubic inch Clockwise city water-cooled Cylinder
digital to analog
DAC dB dB(A) DC DCR
DEF deg., ° dept. dia. DI/EO
DIN
DIP DPDT DPST DS
DVR E2PROM, EEPROM E, emer. EATS ECM
EDI EFR e.g.
EG EGSA
EIA
EI/EO
EMI emiss. eng. EPA EPS ER ES
ESD est. E-Stop
etc. exh. ext. F FDS
digital to analog converter decibel decibel (A weighted) direct current direct
current resistance
diesel exhaust fluid degree department Diameter dual inlet/end outlet
Deutsches Institut fur Normung e. V. (also Deutsche Industrie Normenausschuss)
dual inline package double-pole, double-throw double-pole, single-throw
disconnect switch
digital voltage regulator electrically-erasable programmable read-only memory
emergency (power source) Exhaust Aftertreatment System electronic control
module, engine control module electronic data interchange emergency frequency
relay for example (exempli gratia)
electronic governor Electrical Generating Systems Association Electronic
Industries Association
end inlet/end outlet
electromagnetic interference Emission Engine Environmental Protection Agency
emergency power system emergency relay engineering special, engineered special
electrostatic discharge estimated emergency stop
et cetera (and so forth) exhaust external Fahrenheit, female Fluid Dosing
System
TP-6843
12/21
65
FHM fl. oz. flex. freq. FS ft. ft. lb. ft./min. ftp g
ga.
gal. gen. genset GFI GND,
flat head machine (screw) fluid ounce flexible frequency full scale foot, feet
foot pounds (torque) feet per minute file transfer protocol gram
gauge (meters, wire size)
gallon generator generator set ground fault interrupter ground
in. in. H2O in. Hg in. Lb. Inc. ind. int. int./ext. I/O IP
ISO
J JIS k K kA
inch inches of water inches of mercury inch pounds incorporated Industrial
internal internal/external input/o utput internet protocol
International Organization for Standardization jo ule Japanese Industry
Standard kilo (1000) kelvin kiloampere
Lpm LOP LP LPG LS Lwa LWL LWT m M
m3
m3/hr. m3/min. mA man. max.
liters per minute low oil pressure liquefied petroleum liquefied petroleum gas
left side sound power level, A weighted low water level low water temperature
meter, milli (1/1000) mega (106 when used with SI units), male cubic meter
cubic meters per hour cubic meters per minute milliampere manual maximum
gov. gph gpm gr.
GRD gr. wt. H x W x D HC HCHT HD
HET
hex Hg
HH
HHC HP hr. HS hsg. HVAC
HWT Hz
IBC IC ID IEC
IEEE
IMS
governor gallons per hour gallons per minute grade, gross
equipment ground gross weight height by width by depth
hex cap high cylinder head temperature heavy duty
high exhaust temp., high engine temp. hexagon mercury (element)
hex head
hex head cap horsepower ho ur heat shrink Housing heating, ventilation, and
air conditio ni ng high water temperature hertz (cycles per second)
International Building Code integrated circuit inside diameter, identification
International Electrotechnical Commission Institute of Electrical and
Electronics Engineers improved motor starting
KB KBus kg kg/cm2
kgm kg/m3 kHz
kJ km kOhm, k kPa
kph kV
kVA
kVAR kW kWh kWm kWth L
LAN L xW x H lb. lbm/ft3 LCB LCD
LED
Lph
kilobyte (210 bytes) Kohler communication protocol kilogram kilograms per square centimeter kilogram-meter kilograms per cubic meter ki lo hertz
MB MCCB MCM meggar
MHz mi. mil
ki lojo ule kilometer kilo-ohm
min. misc. MJ
kilopascal
mJ
kilometers per hour kilovolt
kilovolt ampere
kilovolt ampere reactive kilowatt ki lowatt-ho ur kilowatt mechanical
kilowatt-thermal liter
mm
mOhm, m MOhm, M MOV MPa mpg mph MS ms
local area network length by width by height
m/sec. mtg.
pound, pounds pounds mass per cubic feet line circuit breaker liquid crystal display
MTU MW mW µF
light emitting diode
µF
liters per hour
megabyte (220 bytes) molded-case circuit breaker one thousand circular mils
mego hmmeter
megahertz mile one one-thousandth of an inch
minimum, minute miscellaneo us megajoule
milli jo ule
millimeter millio hm
mego hm
metal oxide varistor megapascal miles per gallon miles per hour military
standard millis eco nd
meters per second mounting
Motoren-und Turbinen-Union megawatt milliwatt microfarad
microfarad
66
TP-6843 12/21
N, norm. normal (power source)
PMG
permanent magnet generator
SCR
NA
not available, not applicable
pot
potentiometer, potential
nat. gas natural gas
ppm
parts per million
s, sec. SI
NBS
NC NEC NEMA
NiCd
National Bureau of Standards
normally closed National Electrical Code National Electrical Manufacturers
Association nickel cadmium
PROM
psi psig pt.
PTC
programmable read-only memory pounds per square inch pounds per square inch gauge pint
SI/EO
sil. SMTP SN
positive temperature coefficient SNMP
NFPA
Nm NO no., nos.
National Fire Protection Association newton meter normally open number, numbers
PTO
PVC PVC PWM
NPS NPSC NPT
NPTF NR Ns OC OD OEM
OF opt. OS OSHA
OSHPD
OV oz.
National Pipe, Straight National Pipe, Straight-coupling
National Standard taper pipe thread per general use National Pipe, Taper-Fine
not required, normal relay nanoseco nd overcrank outside diameter
original equipment manufacturer overfrequency option, optional oversize,
overspeed
Occupational Safety and Health Admi nistratio n Office of Statewide Health
Planning and Development (California) overvoltage ounce
qt. qty. R
rad. RAM RDO ref. rem. Res/Co ml RFI RH RHM rly.
rms
rnd. RO
power takeoff
polyvinyl chloride polyvinyl chloride pulse width modulated, pulse width
modulation quart, quarts quantity replacement (emergency) power source
radiator, radius random access memory relay driver output reference Remote
Residential/Commercial
radio frequency interference round head round head machine (screw) Relay
root mean square
Round read only
SPDT
SPST spec specs
sq. sq. cm sq. in.
SMS SS std. stl. tach. TB
TCP TD TDC TDEC
TDEN
TDES TDNE
p., pp. PC PCB pF PF
ph., ø PHC
PHH PHM
PLC
page, pages personal computer printed circuit board picofarad power factor
phase Phillips® head Crimptiter (screw) Phillips® hex head (screw) pan head
machine (screw)
programmable logic control
ROM rot. rpm RS RTDs
RTU RTV
RW SAE
scfm
read only memory rotate, rotating revolutions per minute right side resistance temperature detectors remote terminal unit room temperature vulcanization
TDOE TDON temp. term. THD
TIF tol.
read/write
Society of Automotive Engineers standard cubic feet per minute
turbo. typ.
UF
silicon controlled rectifier (electrical), selective catalytic reduction
(exhaust emissions) second Systeme international d’unites, International
System of Units side in/end out
Silencer simple mail transfer protocol serial number
simple network management protocol single-pole, double-throw
single-pole, single-throw specification specification(s)
square square centimeter square inch
short message service stainless steel standard Steel Tachometer terminal block
transmission control protocol time delay top dead center time delay engine
cooldown
time delay emergency to normal
time delay engine start time delay normal to emergency time delay off to
emergency time delay off to normal temperature Terminal total harmonic
distortion
telephone influence factor Tolerance
Turbocharger typical (same in multiple locatio ns) underfrequency
TP-6843
12/21
67
UHF UIF UL UNC UNF univ. URL
US UV V VAC VAR VDC VFD VGA VHF W WCR w/ WO w/o wt. xfmr
ultrahigh frequency user interface Underwriter’s Laboratories, Inc. unified coarse thread (was NC) unified fine thread (was NF) universal uniform resource locator (web address) undersize, underspeed ultraviolet, undervoltage volt volts alternating current voltampere reactive volts direct current vacuum fluorescent display video graphics adapter very high frequency watt withstand and closing rating with write only witho ut weight transformer
68
TP-6843 12/21
TP-6843 12/21d
Original Instructions (English)
© 2012 Kohler Co. All rights reserved.
KOHLER CO. Kohler, Wisconsin 53044 Phone 920-457-4441, Fax 920-459-1646 For the nearest sales/service outlet in the US and Canada, phone 1-800-544-2444 KOHLERPower.com
References
- Kohler Energy | Cleaner Energy Solutions for individuals, businesses and communities
- P65warnings.ca.gov