Advantage NANO XL Conductivity Controls Water Treatment Installation Guide
- September 20, 2024
- ADVANTAGE
Table of Contents
NANO XL Conductivity Controls Water Treatment
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Product Information
Specifications
- Product Name: NANO XL
- Type: Microprocessor-based controller
- Designed for: Recirculating water treatment systems
- Control Functions: Conductivity monitoring and control,
chemical addition, relay activation
Product Usage Instructions
Installation
1. Electrical Wiring: Follow the wiring diagram provided in the
manual for proper installation.
2. Mounting Instructions: Ensure the NANO XL controller is
securely mounted in a suitable location.
System Operation Overview
1. Menus: Navigate through different menus using the front panel
keypad.
2. Conductivity Sampling Methods:
- A. Continuous: Monitor conductivity continuously.
- B. Timed Sampling: Conduct periodic conductivity checks.
- C. Sample and Hold: Take a single sample and hold the
reading.
3. Calibration Overview: Calibrate the conductivity scale based
on your system’s requirements.
Maintenance
Regular maintenance is essential to ensure the proper
functioning of the NANO XL controller. Refer to the maintenance
section of the manual for detailed instructions.
Troubleshooting
If you encounter any issues with the NANO XL controller, refer
to the troubleshooting section of the manual for step-by-step
guidance on resolving common problems.
FAQ
Q: How can I determine the features of my NANO XL unit?
A: Check the model number label located on the controller
enclosure. The features applicable to your unit will be listed
there.
Q: What is the purpose of the selectable feed timers in the
NANO XL unit?
A: The selectable feed timers allow you to control the timing of
chemical additions or other processes based on your specific
requirements.
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NANO XL
Conductivity
Installation Maintenance Repair Manual
Manual
ENTER
MENU
FORCE ON/OFF
Advantage Controls 4700 Harold-Abitz Dr. Muskogee, OK 74403 Phone: 1
918-686-6211 Fax:
888-686-6212 www.advantagecontrols.com
E-mail: support@advantagecontrols.com
1
08/2024
Table of Contents
Contents
Page
I.
Introduction……………………………………………………………………… 3
II. Description………………………………………………………………………. 3 Features …………………………………………………………………………. 3
III. Installation Electrical Wiring……………………………………………………………….. 4 Mounting Instructions ……………………………………………………….. 4 Logic and Relay Cards ……………………………………………………… 5
IV. Front Panel Description …………………………………………………….. 9
V. System Operation Overview………………………………………………. 9 Description of Menus………………………………………………………… 9
Conductivity Sampling Methods ……………………………………….. 10 A. Continuous B. Timed Samping C. Sample and Hold
Calibration Overview ………………………………………………………. 10 A. Continuous B. Timed Samping C. Sample and Hold
VI. Maintenance ………………………………………………………………….. 11
VII. Troubleshooting……………………………………………………………… 11
VIII. NanoTron-C & B2 Menu Map …………………………………………… 12
IX. Warranty & 30 Day Billing Memo Policy …………………………….. 14
2
I. Introduction
NANO XL microprocessor based controllers are designed to provide a wide range of control functions for recirculating water treatment systems. The controller is programmed through a front panel keypad and can be configured to provide a customized control system for your application. Your particular unit’s functions can be determined by comparing the units model number to the Model Numbering table listed below.
Model Numbering NanoTron units have several base system control functions and unit optional features. Your unit may be supplied with one or more of the features described in this manual. To determine what features apply to your unit check the model number label located on the controller enclosure.
Base Control Function B2 – Boiler Conductivity and 3 Feed Timers C – Tower Conductivity and 3 Feed Timers F4 – Four Selectable Feed Timers
Whole Unit Optional Features A – Conduit Connections A3 – Conduit with CE E – Flow Switch
II. Description
NanoTron units are designed to automate conductivity control and / or the
addition of various chemicals or activate other devices via a relay output.
Each relay can have its activation function selected from available analog
inputs, timers, alarms or utility.
NANOXL-C and NANOXL-B2 units include: · Two totalizing water meter inputs that
can be configured for contacting head or hall effect meter inputs. · Three
digital inputs that can be set to disable a relay output. · Four mechanical
relay outputs with normally open and normally closed contacts that can be
configured
for powered or dry contact relay operation (see page 4 diagram).
Conductivity Control (C & B) – Conductivity monitoring and control of Total
Dissolved Solids (TDS) in a recirculating water systems in terms of electrical
conductivity measured in MicroSiemens/cm. The conductivity scale can be
selected from three ranges (low, mid and high) in the Configure menu (see page
12). Selectable feed timers are also included (see timer description below).
Feed Timer – Three selectable timers that can be individually programmed as
one of the following types:
1. Pulse Timer Accepts dry contact pulses from a water meter (supplied
separately). It can accumulate 1-9999 pulses to activate the timer to run from
0-99 minutes, 59 seconds in minutes and seconds. Timer will store up to 5
additional activations during an individual run time.
2. Recycle Timer Provides a user defined “off” cycle in HH:MM and a user
defined “on” cycle in MM:SS that is repeated constantly.
3. 28-Day Timer – 28-day feed timers, typically used for biocide feed are
based on a 28-day cycle with two independent programmable feed cycles allowing
for feed on selectable days and weeks.
4. Post Bleed Timer – The relay is activated after a bleed cycle and runs for
the set percentage of that bleed cycle.
5. With Bleed Timer – Activates the relay output simultaneously with the
bleed and limits the amount of time the relay output will be on during the
bleed cycle.
6. Utility – Relay always on 7. Alarm – Relay on with alarms
3
III. Installation
Electrical Wiring The controller has an internal regulated power supply that
will operate in the range of approximately 100 to 240 VAC on the incoming
wiring. Output relay(s) are protected with a replaceable fuse. Relay output
voltage will equal the incoming line voltage.
Prewired units are supplied with a 16 AWG cable with a 3-wire grounded USA 120
volt plug for incoming power and 18 AWG 3-wire grounded receptacle cords for
all control relay outputs. Conduit units are supplied with liquid tights and
adaptors for easy hard wiring to supplied connector.
! CAUTION !
1. There are live circuits inside the controller even when the power switch
on the front panel is in the OFF position. Never open the front panel without
first disconnecting power from the outlet. Prewired controllers are supplied
with an 8 foot, 18 AWG power cord with USA style plug. A #1 Phillips driver is
required to open the front panel.
2. Low voltage signal wires (probes, flow switch, water meter, etc.) should
never be run in conduit with high voltage (like 115VAC) wires.
3. Never attempt to land connections to the controller without first
disconnecting power from the outlet. 4. Do not block access to disconnect
power during mounting and installation. 5. The controller should be connected
to its own isolated circuit breaker, and for best
results, the ground should be a true earth ground, not shared. Any attempt to
bypass the grounding will compromise the safety of users and property. 6. The
electrical installation of the controller must be performed by trained
personnel only and conform to all applicable National, State and Local codes.
7. Operation of this product in a manner not specified by the manufacturer may
result in damage to equipment or persons. 8. Avoid mounting in locations that
expose the controller to direct sunlight, vapors, vibration, liquid spills or
extreme temperatures; less than 0°F (-17.8°C) or greater than 120°F (50°C).
EMI(electromagnetic interference) from radio transmissions and electric motors
can also cause damage or interference and should be avoided.
NOTES: 1. Liquid tight fittings and some labeled signal leads are provided for
signal (low voltage) connections,
such as water meter inputs. 2. Hall effect meters that require +12 VDC must
use an external power supply (TFS-PWR). 3. Optional 4-20mA ouput is produced
with 12 VDC on the loop. Do not connect output to devices
that are trying to power the loop.
Mounting Instructions
Select a mounting location that provides the operator easy access to the unit
and a clear view of the controls through the cover of the controller. The
location should be convenient to grounded electrical connections, the needed
sample line plumbing and is on a stable vertical surface.
4
Logic and Relay Cards
Relay Card
Relays can be a dry contact by changing the jumpers and connecting to Ground
and either N.O. or N.C.
Dry Hot
GND
FUSE
Ribbon Cable
Relay 1
POWER SUPPLY
Relay 2
Relay 3
Relay 4
NO NC COM
Option W
HOT NEU CONTROL
RELAY 1 RELAY 2 Dry Hot Dry Hot
GND
GND
RELAY 1 Dry Hot GND
FUSE
FUSE RELAY 2
RELAY 3
FUSE RELAY 4
Dry Hot
Dry Hot
Dry Hot
NeutraGl roundN. O. N. C. NeutraGl roundN. O. N. C. NeutraGl roundN. O. N. C. NeutraGl roundN. O. N. C. Power In
Relay 1
Relay 2
Relay 3
Relay 4
H N G
Nano XL-C Logic Card
Cond
Temp
Conductivity Module
PULSE
– – OUT
FLOW
++
R B W G
– WM1
– WM2
-D1
-D2
MOD2
-D3
MOD3
MOD4
5
Electrode Installation
Controllers may come configured for various circulating water systems. Listed
below are instructions for cooling tower and boiler typical installations.
Your specific installation requirements may differ but should conform to these
instructions as much as possible for proper operation.
A. Cooling Tower
The standard probe(s) and/or flow assembly for cooling tower installations is
constructed of schedule 80 PVC and supplied with 3/4″ slip fittings for
installing into a sample line. To insure proper operation the sample line must
have a flow rate of 3-10 gpm. Inlet pressure must be higher than outlet
pressure in order for water to flow past the electrode(s) to achieve the
required rate. The probes are temperature compensated for increased accuracy.
NOTES:
1. Install an isolation valve on either side of the flow
assembly so electrodes can be easily isolated for
removal and cleaning.
2. A line strainer is recommended upstream from
the probes to protect against fouling and damage.
3. Systems with a flow switch require 2-3 gpm flow
rate to operate outputs. !
WARNINGS:
PE-NUT
1. Electrodes are O-ring sealed, which if
damaged will cause a leak.
Do not allow pH sensor tips to dry out, E-30-PH
damage will occur.
3. Do not exceed a water temperature range
of 32°F to 140°F. 4. Do not exceed a maximum pressure of
MW-T-3
150 psi.
FS-0C
E-30-PH
E-4A-10
Conductivity Probe 2C0A-150
UNION-3/4TT
FS-FC
1A9A000262
FS-T
FS-B1-SP
FS-PT-P Paddle Flow Switch
used with option E3
FS-SP Sample
Typical Cooling Tower Installation Diagram
COOLING TOWER
MAKE-UP WATERMETER
TO DRAIN
CIRCULATION PUMP
6
CHILLER
B. Boiler
Standard boiler electrodes have a MNPT stainless steel bushing and are
supplied with a FNPT cross designed for mounting in the skimmer (surface)
blowdown line. Sampling of the boiler’s water can be achieved using one of two
typical plumbing configurations (continuous sampling or timed and/or hold
sampling). For a successful installation, it is critical to observe the
recommended distances and pipe
sizes provided in the installation drawings.
For best results, the electrode cross should be mounted in a 1″skimmer
blowdown line within 4′ of the boiler. Smaller line sizes and greater
distances may affect the response time and accuracy of the electrode. A flow-
throttling device down stream from the probe (within 24 inches) is required to
ensure that the electrode is exposed to water and not steam. Properly
installed and adjusted, this device will prevent
flashing in the electrode chamber.
NOTES: 1.
2.
3.
Install a fully ported type valve between the electrode and the boiler. This
allows the electrode to be isolated for removal and cleaning.
A flushing line and 1/4 turn type ball valve should be installed in the bottom
of the cross to periodically “flush” sediment from the electrode chamber. Make
sure the alignment arrows on the probe end up parallel to the flow for best
performance.
! WARNINGS:
1. The probe must be fully immersed in the system water to read correctly.
Steam flashing will result in incorrect readings.
2. Do not exceed a maximum water temperature of 436°F (224°C) 3. Do not
exceed a maximum pressure of 350 psi (24.1 bar) 4. A throttling device must be
installed down stream from the elecrode.
Boiler Conductivity Electrodes
BE-32
Wiring Note: BE-32 probes require a (2) conductor cable from controller to
probe. The (2) wires connect on the (2) conductivity points (R & B) as shown
on page 5.
7
Typical Continuous Sampling Boiler Installation Diagrams Throttling device
Fully ported gate or ball valve
1″ Continuous blow down line
Electrically actuated blow down valve
1/2″ pipe between probe and throttle device and flush valve
Electrode within a 1″ cross with electrical connection vented
! Warning – Do not use on bottom blowdown lines, only continuous or surface blowdown lines.
Typical Timed Sampling and Sample and Hold Boiler Installation
Throttling device within 24″ past probe
Electrode within a 1″ cross with electrical connection vented
1″ Continuous blow down line
Electrically actuated blow down valve
To drain
Fully ported gate or ball valve
1/2″ pipe between probe and throttle device and to the flush valve
! Warning – Do not use on bottom blowdown lines, only continuous or surface blowdown lines.
8
IV. Front Panel Description
Wed 10:59:57am
1
2
ENTER
3
4
MENU
FORCE ON/OFF
Press MENU to access menus or go back MENU one layer in menu structure.
Press FORCE to activate relays manually.
FORCE ON/OFF
Press ENTER to go a layer deeper in menu,
ENTER
to initiate a setting change and to set change.
Use up or down arrows to navigate through menu selections or setting options.
Use left or right arrows to move cursor while making a numerical value change.
V. System Operation Overview
Description of Menus
NANOXL controllers have two modes of operation, Run and Menu. All menus are circular. Pressing the DOWN key will display the next line of information on the display.
Run –
This mode is for normal operation. In the Run mode, the display will read system values. If an alarm is present, the display flashes with the alarm status.
The Run menu will display values such as day, time, date and other values depending upon the features present on the unit. The unit will automatically return to the Run mode if no keys are pressed for three minutes.
Menu –
This mode is used to make adjustments to settings and readings on the
controller. To access
the Menu mode from the run screen, press the Menu key. Use the up or down
arrow to scroll through the various menus. When you want to access a specific
menu, press the Enter key. Once you have entered a sub-menu you will be able
to step through that menu’s options with the up or down arrow key.
9
Conductivity Sampling Methods
A. Continuous – Typical for most tower applications. The controller is
constantly reading the sensor and activating the bleed relay based on readings
relationship to the set point, set point direction and differential. Example:
A rising set point of 1500 and differential of 50 the bleed relay would
activate when the conductivity rises above 1500 and stays on until the reading
drops to 1450.
B. Timed Sampling – A sample timer allows the conductivity to be sampled at
periodic intervals. Sample intervals are adjustable from 1 minute to 9 hours,
59 min. Sample duration (on-time) is adjustable from 1 second to 99 minutes,
59 seconds. If the reading is below the set point by the differential amount
the bleed relay will be turned off at the end of the sample duration and the
sample interval countdown reinitiated. If the reading is above the set point
at the end of the sample method the bleed relay stays on until the reading
drops by the differential amount.
C. Sample and Hold – Also uses a sample timer for periodic sampling intervals.
The unit will sample for its duration then hold the blowdown valve closed for
a settable period (hold time). The conductivity is checked at the end of the
hold period, if additional blowdown is required the blowdown valve is held
open for a preset amount of time (blowdown time). Then sample cycle is
repeated until the reading is below the set point at the end of a hold cycle
and the sample interval countdown reinitiated.
Note: Timed Sampling and Sample and Hold are typically used for boiler
applications but Timed sampling can also be used on small towers. On these
tower applications the probe is installed in the bleed line before the bleed
valve.
Calibration Overview
The NanoTron controllers update the conductivity reading every two seconds
with a running average. Nanotron controller’s conductivity scale should be
selected so that the conductivity setpoint is as close as possible to the
middle of the scale. (See page 12 menu for setting scale).
Note: If a controller is using Timed Sampling or Sampling and Hold methods of
control the conductivity reading shown in the RUN mode may not be a current
reading. The controller will hold and display the conductivity value seen at
the end of the last sample or hold duration. To see a current reading force on
the bleed relay with either the Force button or via the Calibration menu.
A. Continuous – Calibrating continuous sampling units can be done at any time
with the probe in a steady stream of water with no air or steam present.
B. Timed Sampling – While in the calibration menu there is a selection to
force on the bleed relay. It will force it into the sample period. After 1-2
minutes verify that the reading is stable then enter the desired calibration
value.
C. Sample and Hold – While in the calibration menu there is a selection to
force on the bleed relay. It will force the unit into its sample and hold
periods and calibration should be done during the hold after a fresh sample.
Notes: 1. If steam is flashing on boiler probes a stable reading will not be
maintained and the controller will not track. 2. Recalibration is required if
the scale is changed in the Configure menu.
10
VI. Maintenance
The only required maintenance for normal uninterrupted operation of your
controller is cleaning of the electrode(s). After initial start up, it is a
good idea to clean the electrode frequently until a schedule based on need has
been developed. Since each application is unique, it is difficult to estimate
the required frequency of cleaning. The first cleaning should take place after
about one week of the system being on line.
To determine the required cleaning frequency, record the reading on the
controller before the electrode is removed for cleaning. After cleaning,
record the new reading. If a change is observed in the two readings, the
electrode was dirty. The more significant the change, the dirtier the
electrode. If no change occurs, cleaning needs to be done less often.
Conductivity Electrode Cleaning Procedure
1. Record the current conductivity reading. 2. Turn off water flow through
the electrode loop, bleed pressure from the line and remove
electrode. 3. Use a clean cloth and a mild cleaning solution to remove loose
dirt etc., from the flat
surface of the electrode. 4. If the electrode has deposits such as scale
attached to the electrode surface a more
aggressive cleaning approach will be needed. There are several ways to do
this, the preferred method being the one that is easiest for the user. a. Use
a mild acid solution to dissolve deposits. b. Lay a piece of sandpaper (200
grit or finer) on a flat surface such as a bench
top. “Sand” electrode to remove stubborn deposits. (Do not wipe surface with
your finger.) Oil from your skin will foul carbon tips. 5. Reinstall the
electrode in the system. After the reading stabilizes, calibrate the unit to a
reliable test reading.
Many times an electrode can appear to be clean, but the unit still cannot be
calibrated. If this is the case, use one of the more aggressive electrode
cleaning procedures listed in step 4 above. Recheck the calibration after
completion of this procedure. If no change was observed in the reading,
replace the electrode. If a change occurred but the unit still will not
calibrate, repeat procedure as many times as necessary.
VII. Troubleshooting
The Advantage NanoTron controller is designed for many years of trouble free
operation. Should a problem occur, refer to the following chart to help
identify the problem. If replacement is required, follow the procedures listed
in the Warranty and Factory Service portion of this manual.
SYMPTOM
POSSIBLE CAUSE
False reading……………………………… Bad or dirty electrode
Out of calibration
Will not calibrate …………………………. Dirty electrode
Faulty electrode
Faulty wiring to electrode
No system power………………………… Check power source
Check fuse
Check connections
Pulse timer not activating …………….. Check wiring
Check external device
Outputs not energized …………………. No flow
Check fuse 11
SOLUTION Clean, as needed
Calibrate unit Clean electrode Replace electrode if needed Replace wiring if
needed Plug into different receptacle Replace as needed Make sure ribbon
cables are secure Repair as needed Repair/replace as needed Check sample line
for clogged pipes or strainers Replace as needed
Calibration
Relay 1 Set
Temp 077°F
Mode Setting
Con 02500µS Force Bleed? N
Continuous
Setpoint 01500 Diff 0100
If set for Timed or Sample & Hold, force on bleed to get fresh sample.
If Sample & Hold, it will cycle through to the sample. Then hold & calibration
should be done at this time.
Sample&Hold
Direction: Rise High Alarm 2500 Low Alarm 00600
Limit hh:mm Interval hh:mm
Duration mm:ss
Bleed mm:ss
Hold mm:ss
Setpoint 01500
Direction: Rise
High Alarm 02500
Low Alm 00600
Timed Mode
Interval hh:mm
Duration mm:ss
Mode Setting
All active relays have a mode setting to select what is activating the relay
from active analog inputs, timer types, utility or alarm.
What ever it is set for is what will be shown in this screen. You have to
press enter to change the mode setting. If you arrow down you go to the
settings for the mode already set.
Setpoint 01500 Diff 0100
Direction: Rise High Alm 02500 Low Alm 00600
Relay 2 Set Mode Setting
Pulse Timer
Post Bleed With Bleed Timer Off
Utility 28-Day (Bio)
Recycle
All Alarms Digital Input 1 Digital Input 2 Digital Input 3
Select WM 1, 2 or 1 + 2 WM = 1 + 2
On in 0010 gl
Run Time mm:ss
Feed OK W/Bld
Password 0000 Flow Sw: Close
Probe Type
Tower (140°F)
010% of Bld
Boiler (430°F)
Limit Time hh:mm Limit Time hh:mm
A: All Days A: All Weeks A: Start 12:00a
A: Run Time hh:mm
A: Prbld hh:mm A: Lkout hh:mm B: (see above)
Off Time hh:mm Run Time mm:ss StartTime hh:mm EndTime hh:mm Feed OK W/Bld
Imperial Units Cond Scale
Cond Units Zero Cond? N No Feed No Flow Digital Input 1
Digital Input 2
Digital Input 3
Metric Units Low (0-1000) MID (0-10,000) HIGH (0-50,000)
µS/cm ppm/TDS
Feed OK NoFlow
Show as Alarm On if Open Delay mm:ss Shutdown R1 Show as On/Off
Select if input is shown as an Alarm or On/Off
On if Open or Closed on input
Time condition must be on before going into effect
Select which Relay to disable.
On if Closed Delay mm:ss
Shutdown N/U Show as Alarm
Show as On/Off ON if Closed Delay mm:ss Shutdown N/U Latch: none
On if Closed Delay mm:ss
Wifi
Y/N
Backlight Y/N
Flash LCD Y/N
Shutdown N/U
Backlight on of off Flash backight when in alarm
12
Clock Set Set Time Set Date Set Day & Week
Water Meter Reset WM1 N
WM 1 Units WM 1 Value WM1 Debounce
Reset WM2 N WM 2 Units WM 2 Value
WM2 Debounce
Relay Test On For mm:ss Relay 1 On/Off Relay 2 On/Off Relay 3 On/Off Relay 4 On/Off
Volume Alarm LoRate: XX.XX
Vol XXXXXX Vol set 1-11-23
HiRate: XXX.X
RateAlarmDelay
Delay mm:ss
The volume alarm happens when the defined amount of volume has passed since a new volume value has been entered. Enter a new vol and it resets the counter and shows when it was set. Rate alarms are disabled with a 0 setting which should be the default setting.
Pulse Output In = WM1 LoRate= 000.0 HiRate= 700.0 HiMax = 0125
4-20 Output In = COND1
4mA=00100 20mA=01000 SIM 20: 2960 SIM 4: 0700
HiMax should match pump max stroke/ min speed rate.
LoRate is sensor reading desired for slowest pulse output.
Hi Rate is sensor reading for high pulse rate.
The “In” setting for Pulse and mA output is the reading or source for the output’s ranging.
Diagnostics Nano-XL FW: ?.?.?
Test Keypad Test Display Reset Cal? N
Factory
13
IX. Manufacturer’s Product Warranty
Advantage Controls warrants units of its manufacture to be free of defects in
material or workmanship. Liability under this policy extends for 24 months
from date of installation. Liability is limited to repair or replacement of
any failed equipment or part proven defective in material or workmanship upon
manufacturer’s examination. Removal and installation costs are not included
under this warranty. Manufacturer’s liability shall never exceed the selling
price of equipment or part in question.
Advantage disclaims all liability for damage caused by its products by
improper installation, maintenance, use or attempts to operate products beyond
their intended functionality, intentionally or otherwise, or any unauthorized
repair. Advantage is not responsible for damages, injuries or expense incurred
through the use of its products.
The above warranty is in lieu of other warranties, either expressed or
implied. No agent of ours is authorized to provide any warranty other than the
above.
30 Day Billing Memo Policy Advantage Controls maintains a unique factory
exchange program to ensure uninterrupted service with
minimum downtime. If your unit malfunctions, call
1-800-743-7431, and provide our
technician with Model and Serial Number information. If we are unable to
diagnose and solve your problem over the phone, a fully warranted replacement
unit will be shipped, usually within 48 hours, on a 30 Day Billing Memo.
This service requires a purchase order and the replacement unit is billed to
your regular account for payment.
The replacement unit will be billed at current list price for that model less
any applicable resale discount. Upon return of your old unit, credit will be
issued to your account if the unit is in warranty. If the unit is out of
warranty or the damage not covered, a partial credit will be applied based
upon a prorated replacement price schedule dependent on the age of the unit.
Any exchange covers only the controller or pump. Electrodes, liquid end
components and other external accessories are not included.
FCC Warning This equipment generates and uses radio frequency energy and if
not installed and used properly, that is, in strict accordance with the
manufacturer’s instruction, may cause interference to radio communications. It
has been type tested and found to comply with the limits for a class A
computing device pursuant to subpart J of part 15 of FCC Rules, which are
designed to provide reasonable protection against such interference when
operated in a commercial or industrial environment. Operation of this
equipment in a residential area is likely to cause interference in which case
the user, at his own expense, will be required to take whatever measures
necessary to correct the interference.
14
– Notes 15
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