BUNN ITB Coffee and Tea Brewers Installation Guide
- June 10, 2024
- BUNN
Table of Contents
ITB Coffee and Tea Brewers
BUNN-O-MATIC Coffee Brewer
The BUNN-O-MATIC Coffee Brewer is a commercial-grade equipment
that can brew a half-gallon batch of coffee into an awaiting
dispenser. It is designed for indoor use on a sturdy counter or
shelf and can be easily configured for 120V 15 amp, 120/208V 20 amp
or 120/240V 20 amp. The brewer may also have a hot water faucet for
allied beverage use.
Installation Instructions
-
Choose a sturdy counter or shelf to place the equipment.
-
Configure the brewer to the appropriate voltage and amperage as
per your requirement. -
Connect the brewer to a water source.
-
Plug in the brewer to an electrical outlet.
Usage Instructions
-
Make sure that the brewer is properly installed and connected
to both water and electricity sources. -
Fill the brewer with the desired amount of coffee grounds and
water. -
Press the ENABLE BREW switch on the control panel to turn on
the power. -
Wait for the brewer to brew the coffee into the dispenser.
-
If desired, use the hot water faucet for allied beverage
use.
Troubleshooting
Refer to the troubleshooting section of the user manual if you
encounter any problems with the brewer. Make sure to exercise
extreme caution when servicing electrical equipment and follow
recommended service procedures. If the problem persists, contact
the Bunn-O-Matic Technical Service Department.
ITB/ITCB/HV ICB SH/DV/TWIN
New Infusion Series® Platinum Edition®
SERVICE MANUAL INSTALLATION & OPERATING GUIDE
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE:
217-529-6601 FAX:
217-529-6644
www.bunn.com
To ensure you have the latest revision of the Operating Manual, Illustrated
Parts Catalog, Programming Manual, or Service Manual, please visit the
Bunn-O-Matic website, at www.bunn.com. This is absolutely FREE, and the
quickest way to obtain the latest catalog and manual updates. For Technical
Service, contact Bunn-O-Matic Corporation at
1-800-286-6070. 54299.0000D 10/21 ©2017
Bunn-O-Matic Corporation
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:
- Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee
dispensers, MCR/MCP/MCA single cup brewers, thermal servers and ThermoFresh®
servers (mechanical and digital) 1 year parts and 1 year labor. 2) All other
equipment – 2 years parts and 1 year labor plus added warranties as specified
below: a) Electronic circuit and/or control boards – parts and labor for 3
years. b) Compressors on refrigeration equipment – 5 years parts and 1 year
labor. c) Grinding burrs on coffee grinding equipment to grind coffee to meet
original factory screen sieve analysis – parts and labor for 4 years or 40,000
pounds of coffee, whichever comes first.
These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the applicable warranty period. This warranty does not apply to any equipment, component or part that was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration, improper installation or operation, improper maintenance or repair, non periodic cleaning and descaling, equipment failures related to poor water quality, damage or casualty. In addition, the warranty does not apply to replacement of items subject to normal use including but not limited to user replaceable parts such as seals and gaskets. This warranty is conditioned on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone at 217-529-6601 or by writing to Post Office Box 3227, Springfield, Illinois 62708-3227; 2) if requested by BUNN, shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior authorization from BUNN that the defective equipment is under warranty. THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN are not authorized to make modifications to this warranty or to make additional warranties that are binding on BUNN. Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and should not be relied upon. If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts and/or labor (during the applicable parts and labor warranty periods specified above) to repair the defective components, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall replace the equipment or refund the purchase price for the equipment. THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.
In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.
392, A Partner You Can Count On, Air Infusion, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARD, BUNN Espress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with the stylized red line, BUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design, Cool Froth, DBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, Phase Brew, PowerLogic, Quality Beverage Equipment Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com, Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality in Beverage Equipment Worldwide, ThermoFresh, Titan, trifecta, TRIFECTA (sylized logo), Velocity Brew, Air Brew, Beverage Bar Creator, Beverage Profit Calculator, Brew better, not bitter., Build-A-Drink, BUNNSource, Coffee At Its Best, Cyclonic Heating System, Daypart, Digital Brewer Control, Element, Milk Texturing Fusion, Nothing Brews Like a BUNN, Picture Prompted Cleaning, Pouring Profits, Signature Series, Sure Tamp, Tea At Its Best, The Horizontal Red Line, Ultra are either trademarks or registered trademarks of Bunn-O-Matic Corporation. The commercial trifecta® brewer housing configuration is a trademark of Bunn-O-Matic Corporation.
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54299 031314
INTRODUCTION
This equipment will brew a half-gallon batch of coffee into an awaiting
dispenser. It can be easily configured for 120V 15 amp, 120/208V 20 amp or
120/240V 20 amp. The brewer may have a hot water faucet for allied beverage
use. It is only for indoor use on a sturdy counter or shelf.
CONTENTS
Warranty ……………………………………………………………………………………………….2
Contents………………………………………………………………………………………………..3 Troubleshooting
……………………………………………………………………………………..4 Diagnostic
Displays…………………………………………………………………………………9 Access
………………………………………………………………………………………………..10 Control
Board……………………………………………………………………………………….11 Membrane Switch
…………………………………………………………………………………13 Bypass Valves
………………………………………………………………………………………14 Brew Valves
…………………………………………………………………………………………15 Refill Valves
…………………………………………………………………………………………16 Tank Heaters
………………………………………………………………………………………..17 Limit
Thermostat…………………………………………………………………………………..18 Temperature
Probe………………………………………………………………………………..19 DV Selector Switch
……………………………………………………………………………….21 Power Switch
……………………………………………………………………………………….22 Heater Triac
………………………………………………………………………………………….23 SoftHeat Power
…………………………………………………………………………………….25 Transformer
…………………………………………………………………………………………26 Troubleshoot Soft Heat Feature At Brewer
………………………………………………..27 Touch Screen (PE) ………………………………………………………………………………..29
Wave Brew Dispense Valve (PE) ……………………………………………………………..30 Air Pump (PE)
………………………………………………………………………………………31 Air Pump Check Valve (PE)
…………………………………………………………………….32 Brew Funnel Sensing Coil
………………………………………………………………………33 Funnel Lock
Solenoid…………………………………………………………………………….34 I/O Board
(PE)………………………………………………………………………………………35 BUNNLink Board
…………………………………………………………………………………..36 Liquid Level Probe
………………………………………………………………………………..42 Liquid Level Probe Diagnostic
A/D#…………………………………………………………43 Liquid Level Probe/Refill Calibration
………………………………………………………..44 Touch Screen Calibration
……………………………………………………………………….45 Error/Warning Message (PE)
………………………………………………………………….46 Importance Calibrating Brew Flow Rates
…………………………………………………49 Water Flow Calibration Menus
(PE)………………………………………………………….50 Water Flow Calibration Steps (PE)
…………………………………………………………..51 Schematic Wiring Diagrams………………………………………………………………
52-76
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54299 101821
TROUBLESHOOTING
A troubleshooting guide is provided to suggest probable causes and remedies
for the most likely problems encountered. If the problem remains after
exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical
Service Department.
· Inspection, testing, and repair of electrical equipment should be performed
only by qualified service personnel.
· All electronic components have ac line voltage and some have low voltage dc
potential on their terminals. Shorting of terminals or the application of
external voltages may result in board failure.
· Intermittent operation of electronic circuit boards is unlikely. Board
failure will normally be permanent. If an intermittent condition is
encountered, the cause will likely be a switch contact or a loose connection
at a terminal or crimp.
· Solenoid removal requires interrupting the water supply to the valve. Damage
may result if solenoids are energized for more than ten minutes without a
supply of water.
· The use of two wrenches is recommended whenever plumbing fittings are
tightened or loosened. This will help to avoid twists and kinks in the tubing.
· Make certain that all plumbing connections are sealed and electrical
connections tight and isolated. · This brewer is heated at all times. Keep
away from combustibles.
WARNING
·
Exercise extreme caution when servicing electrical equipment.
·
Unplug the brewer when servicing, except when electrical tests are specified.
·
Follow recommended service procedures.
·
Replace all protective shields or safety notices.
Before troubleshooting this brewer, check for the following:
Control Boards 1. Make sure ribbon cable is properly attached to the control board (ALL PINS INSERTED INTO PLUG). 2. Make sure before servicing brewer that voltage is present at control board. 3. Press any warmer switch or observe if any indicator lights are glowing on the control panel. If so, proceed with testing. If not, check for voltage across pins 9 & 11 of the 14 pin connector (black and white wires). If voltage is present, replace the control board. If voltage is not present, check wiring and voltage across terminal block (black and white). Correct the problem and retest before proceeding with testing.
NOTE: In the event of board replacement, technician will need to re-program customer’s settings and/or recipes, as well as re-calibrate the temperature probe in program level 2 and re-enter the serial number in level 2.
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54299 070517
TROUBLESHOOTING (cont.) REFILL CIRCUIT PROBLEM Will not refill
PROBABLE CAUSE 1. Power off to brewer
2. Water shut off 3. Error Message
4.ON/OFF Switch (If equipped)
5. Lime build up on Probe(s)
6. Refill Valve or Control Board
REMEDY Press ENABLE BREW switch on control panel to determine if power is ON.
Make sure water is ON.
Brewer has shut down due to malfunction (See Diagnostic Section in this
manual).
Make sure ON/OFF Switch is “ON” and indicator is lit.
Remove the Level Probe(s) and check for lime deposit on tip. Clean and
reinstall.
Check valve.
Refill does not shut off Power “ON”
1. Lime build up on probe
2. Water Level Sensing System 3. Refill valve or control board
Remove Level Probe and check for lime deposits on tip. Clean and reinstall.
Replace control board
Check valve.
Refill does not shut off Power “OFF”
1. Refill valve
Clean or replace valve as needed.
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54299 070517
TROUBLESHOOTING (cont.) HEATING CIRCUIT
PROBLEM
Water does not heat to proper temperature
PROBABLE CAUSE 1. Display’s error message
REMEDY
Brewer has shut down due to malfunction. See Diagnostics.
IMPORTANT: Make sure no temperature tests are taken before the display reads ready. Tank temperature must be stabilized before readings are taken.
2. Water not touching main (short) level probe
Remove level probe and grommet. Look into hole on tank lid. Water must be within approximately one inch from top of tank.
3. Water Level Probe Sensing System
Check refill circuit. Heaters will not turn on if water is not grounding level probe.
4. Temperature Probe
Check/replace
5. Limit Thermostat or TCO
Check/replace
6. Tank Heater
Check/replace
7. Off Board Triac
Check/replace
Spitting or excessive steaming (cont.)
1. Lime build up on temperature probe, tank or tank heater
Inspect probe and tank assembly for excessive lime deposits. Delime as required.
2. Temperature Probe
Check/replace
3. Control Board
Check/replace
Brewer is making unusual noises 1. Plumbing lines 2. Water supply 3. Lime build up
Plumbing lines should not rest on the counter top.
The brewer must be connected to a cold water supply.
Remove the tank lid and clean inside of tank with a deliming agent, if
necessary.
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54299 070517
TROUBLESHOOTING (cont.) BREWING CIRCUIT
PROBLEM Brew cycle will not start
PROBABLE CAUSE 1. Display’s error message
REMEDY Brewer has shut down due to malfunction. See Diagnostics.
2. No water
Water lines and valves to the brewer must be open.
3. No power or incorrect voltage to Check for voltage across the termi-
the brewer
nals at the terminal block.
4. ON/OFF switch not in the “ON” The indicator lamp must be lit position
5. Low water temperature (Brew Allow brewer to heat until ready, or
lockout is enabled)
disable the brew lockout feature.
6. Water not touching refill probe inside tank
Water must be in contact with refill probe before brew cycle will start.
7. Membrane Switch 8. Dispense valve
9. Control board
Check/replace Check/replace Check/replace
Consistently low beverage level in the dispenser or beverage overflows dispenser
1. Brew volume NOTE: Volume adjustments must be made with sprayhead installed.
Inspect the dispense valve and sprayhead for excessive lime deposits. Delime as required.
2. Lime build up 3. Dispense Valve
Remove dispense valve and clear any obstructions. Rebuild or replace valve if
necessary. (See page 15)
Check/replace
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54299 070517
TROUBLESHOOTING (cont.) BREWING CIRCUIT (cont.) PROBLEM
Dripping from sprayhead
PROBABLE CAUSE 1. Lime build up
2. Dispense valve
REMEDY
Inspect the tank assembly for excessive lime deposits. Delime as required.
Check/replace
Weak beverage
1. Sprayhead 2. Water temperature
3. Filter type 4. Coffee grind 5. Funnel loading
A clean sprayhead must be used for proper extraction.
Place an empty brew funnel on an empty decanter beneath the sprayhead.
Initiate brew cycle and check the water temperature immediately below the
sprayhead with a thermometer. The reading must not be less than 195°F (91°C).
Adjust the temperature setting to increase the water temperature. Refer to
Initial Set-up instructions.
BUNN® paper filters must be used for proper extraction.
A fine drip or grind must be used for proper extraction.
The BUNN® paper filter must be centered in the funnel and the bed of grounds
leveled by shaking gently.
Dry coffee grounds remain in the 1. Sprayhead funnel
2. Funnel loading
Make sure sprayhead is present and holes are clear and unobstructed.
The BUNN® paper filter must be centered in the funnel and the bed of grounds
leveled by shaking gently.
Preheat server
Low beverage serving temperature 1. Thermal server/airpot not preheated before
brew cycle
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54299 070517
DIAGNOSTICS
MESSAGE
PROBABLE CAUSE
REMEDY
Temperature Too Low
1. Water temperature in the tank does not meet the ready temperature.
A) Wait for the brewer to heat to the proper temperature.
B) Disable the BREW LOCKOUT function. Refer to programming section for
procedure.
Heating Time Too Long
1. Tank Heater failure.
Replace or repair as needed
2. Control Board/Thermistor failure Replace or repair as needed
Fill Time Too Long
1. Water shut off to brewer
2. Supply line too small or obstructed
Check water supply shut-off Replace or repair as needed
3. Inlet Solenoid failure 4. Control Board Failure 5. ON/OFF switch is OFF
Replace or repair as needed Replace or repair as needed Turn switch ON
Temp Sensor Out Of Range, Check 1. Temperature Sensor Probe open Replace or repair as needed For Bad Connections
Temp Sensor Out Of Range, Check 1. Temperature Sensor Probe Replace or repair as needed
Wire For Shorts
wire(s) shorted
9
54299 070517
COMPONENT ACCESS
This section provides procedures for testing and replacing various major
components used in this brewer should service become necessary. Refer to
Troubleshooting for assistance in determining the cause of any problem.
WARNING – Inspection, testing, and repair of electrical equipment should be
performed only by qualified service personnel. The brewer should be unplugged
when servicing, except when electrical tests are required and the test
procedure specifically states to plug in the brewer.
WARNING – Disconnect the brewer from the power source before the removal of
any panel or the replacement of any component.
All components are accessible by the removal of the top cover or front access
panel. Refer to wiring diagrams at the back of this manual when reconnecting
wires.
FIG. 10-2 ITB/ITCB COMPONENT ACCESS
FIG. 10-1 ICB/ITCB HV COMPONENT ACCESS
FIG. 10-3 ICB/ITCB HV TWIN
COMPONENT ACCESS
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54299 070517
CONTROL BOARD
FIG. 11-1 CONTROL BOARD Location:
The Control Board is located inside the top cover behind the front face plate.
Test Procedures:
The test procedures for the control board will vary depending upon the
problems experienced by the brewer. Refer to the Troubleshooting section which
is divided into three sections, Refill Circuit, Heating Circuit, and Brewing
Circuit. Check for Power to board: 1. Insert one meter lead in J17-pin 9 and
the other
lead in J17-pin 11. 2. With the power connected to brewer, the voltage
reading to the board should be the line voltage rated for that model. If no
voltage is present, check wiring to the board. If voltage is present, and
brewer does not power on, go to step 3 3. Check for line voltage at J15-1 BLK
to J15-2 WHI. If no voltage is present, replace the control board. If voltage
is present, go to step 4 4. Check for 12VAC at J15-4 to J15-2 Yellow wires. If
no voltage is present, replace the transformer. If voltage is present, and
brewer does not power on, replace the control board.
Removal and Replacement: 1. Disconnect brewer from power source. 2. Disconnect
the wires from the relay on the control
board. 3. Disconnect all of the connectors from the control
board. 4. Remove the two screws securing the control board
to the faceplate. 5. Tilt the control board inward to clear the display
section. 6. Place the bottom edge of the new control board in
the cradle, tilt the board forward, and secure with the two nuts to the hood.
7. Re-install connectors. Faceplate Removal and Replacement: 1. Disconnect
brewer from power source. 2. Disconnect the ribbon cable from the control
board. 3. Models with faucet: Drain tank to below faucet outlet fitting.
Remove hose, nut and washer from faucet. Remove faucet assembly. 4. Remove the
two screws and two nuts securing the face plate to the hood. 5. Carefully pull
the ribbon cable through the front opening of the hood. 6. Installation is the
reverse order.
FIG. 11-2 FACEPLATE REMOVAL
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54299 070517
FIG. 12 TRIAC MAP
CONTROL BOARD-ICB TWIN/ITCB DV HV/ITCB TWIN HV TRIAC MAP
Triac: TH1/MOV3/BR2 TH2/MOV1 TH3/MOV2/BR3 OFFBOARD TH4/MOV6 TH5/MOV4 TH6/MOV5 TH7/MOV7
Load Component: Left Funnel Lock Refill solenoid Right Funnel Lock Tank Heaters Left Brew Solenoid Right Brew Solenoid Left Bypass Solenoid Right Bypass Solenoid
Connector: J17-13/J17-14 J17-5 J17-6/J17-7 TR1/TR2 J17-3 J17-2 J17-1 J17-10
CONTROL BOARD-ICB/ITCB TRIAC MAP
Triac: TH1/MOV3/BR2 TH2/MOV1 TH4/MOV6 OFFBOARD TH6/MOV5
Load Component: Funnel Lock Refill solenoid Brew Solenoid Tank Heater(s) Dilution or Bypass Solenoid
Connector: J17-13/J17-14 J17-5 J17-3 TR1 J17-1
CONTROL BOARD-ITB TRIAC MAP
Triac: TH6/MOV5 TH2/MOV1 TH4/MOV6 TH7/MOV7 TH9/MOV8 OFFBOARD TH1/MOV3/BR2
Load Component: Main or Left Dilution Refill solenoid Brew Solenoid Right Dilution Sweetner Tank Heater Funnel Lock
Connector: J17-1 J17-5 J17-3 J17-10 J10-3 TR1 J17-13/J17-14
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54299 070517
MEMBRANE SWITCH
FIG. 13-1 MEMBRANE SWITCH Location: The Membrane Switch is located on the
front face plate. Test Procedures:
There are two methods for testing the membrane switch. The easiest method is
to use the built in test mode. Refer to the Programing Section for Service
Tools/Test Switches. If for some reason you can’t get into the program modes,
or brewer won’t power up, you can test it with an ohmmeter or continuity
tester. Refer to the schematic to trace the appropriate pins.
NOTE: Pin 22 is the static shield & will not provide a reading to the other
pins. There are two commons in this circuit, pins 9 & 10. Disconnect brewer
from power source before disconnecting ribbon cable from control board.
Removal and Replacement: 1. Disconnect the ribbon cable from the 22-pin
connector on the control board. 2. Gently peel the membrane switch from the
front face plate assembly. 4 Remove any adhesive that remains on the front
face plate. 5. Remove the adhesive backing from the new membrane switch.
Insert the ribbon cable through the slot in the front face plate and apply the
membrane switch to the front face plate. 6. Connect the ribbon cable to the
22-pin connector on the control board making sure every pin on the control
board is inserted into the ribbon cable connector.
Helpful Hint
Wrap a thin paper clip around each meter lead and extend past the tip by ¼” –
½”. You may need to sand off the clear coating on some clips!
FIG. 13-2 MEMBRANE SWITCH CONTINUITY
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54299 070517
BYPASS VALVE ON ALL ICB’s
FIG. 14-1 BYPASS VALVE
Location: The bypass valve is located inside the top cover behind the front
face plate.
Test Procedures: 1. Refer to the Programing Section for Service Tools/ Test
Outputs/Bypass Valve. 2. Be sure brew funnel & server are in place before
activating valve. 3. Check the valve for coil action. Turn on the valve with
the test mode. Listen carefully in the vicinity of the brew valve for a click
as the coil pulls the plunger in. If no sound is heard as described, proceed
to #4. If the sound is heard as described, there may be a blockage in the
valve , hose, tank, or sprayhead. Disconnect the brewer from the power source.
Remove the valve and inspect for blockage, and de-lime all related areas. 4.
Connect the voltmeter leads to the coil terminals. Turn on the valve with the
test mode. The indication will be 2-3VAC off, 120VAC on. Set the meter to DC
volts. The indication should be 150160VDC when off, 0V when on. If the
polarity of meter leads are reversed, reading will indicate -150-160VDC.
(Double these readings for 240 volt coils)
If voltage is present as described, but no coil action is
observed, brew valve is defective. Replace valve and test again to verify
repair. If voltage is not present as described, refer to Wiring Diagrams and
check the brewer wiring harness. Also check the control board and switch for
proper operation. Removal and Replacement: 1. Disconnect the brewer from the
power source. 2. Disconnect wires from the valve. 3. Drain enough water from
the tank so the water level is below the outlet. 4. Remove hoses from the
valve. 5. Remove the two #8-32 nuts securing the valve to the sprayhead panel.
6. Install new valve using the two #8-32 nuts. 7. Reconnect hoses to the valve
and secure in place with clamps.
FIG. 14-2 EXPLODED VIEW
Due to the internally rectified coil, do not attempt to test this type of coil
with an ohmmeter. The reading will be open or very high resistance, depending
on the polarity of your meter leads.
14
54299 030818
BREW VALVE
FIG. 15-1 BREW VALVE
Location: The brew valve is located inside the top cover behind the front face
plate.
Test Procedures: 1. Refer to the Programing Section for Service Tools/ Test
Outputs/Brew Valve. 2. Be sure brew funnel & server are in place before
activating valve. 3. Check the valve for coil action. Turn on the valve with
the test mode. Listen carefully in the vicinity of the brew valve for a click
as the coil pulls the plunger in. If no sound is heard as described, proceed
to #4. If the sound is heard as described, there may be a blockage in the
valve , hose, tank, or sprayhead. Disconnect the brewer from the power source.
Remove the valve and inspect for blockage, and de-lime all related areas. 4.
Connect the voltmeter leads to the coil terminals. Turn on the valve with the
test mode. The indication will be 2-3VAC off, 120VAC on. Set the meter to DC
volts. The indication should be 150160VDC when off, 0V when on. If the
polarity of meter leads are reversed, reading will indicate -150-160VDC.
(Double these readings for 240 volt coils)
If voltage is present as described, but no coil action is observed, valve is
defective. Replace valve and test again to verify repair.
If voltage is not present as described, refer to Wiring Diagrams and check the
brewer wiring harness. Also check the control board and membrane switch for
proper operation. Removal and Replacement: 1. Disconnect the brewer from the
power source. 2. Disconnect wires from the valve. 3. Drain enough water from
the tank so the water level is below the outlet. 4. Remove sprayhead and hose
from the valve. 5. Remove the nut securing the valve to the sprayhead panel.
6. Install new valve using the nut from step 5. 7. Reinstall sprayhead and
hose to the valve and secure in place with clamps.
FIG. 15-2 BREW VALVE
Due to the internally rectified coil, do not attempt to test this type of coil
with an ohmmeter. The reading will be open or very high resistance, depending
on the polarity of your meter leads.
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54299 070517
REFILL VALVES
FIG. 16-1 REFILL VALVES Location:
The refill valve is located inside the front of the brewer.
3. Disconnect both water lines at the valve. 4. Remove the two screws
securing the valve to the component mounting bracket. 5. Using the two screws,
install the new valve to the component mounting bracket. 6. Securely fasten
the water lines to the valve. 7. Refer to wiring diagrams when reconnecting
the wires. 8. Install access panels and covers and refer to Initial Set-up for
refill and operation.
ICB & & ITB
Test Procedures: 1. Enter programming level 2, scroll to “Service Tools” then scroll to “Refill Valve”. 2. Briefly activate the refill valve in the test mode. With a voltmeter, check the voltage across the coil wires. 3. The indication must be 120 volts ac for two wire 120 volt models and three wire 120/208 -240 volt models or 230 volts ac for two wire 230 volt models. If voltage is present, proceed to # 4. If voltage is not present, refer to Wiring Diagrams and check main wiring harness. If harness checks ok, replace control board. 4. Check the refill valve for coil action. Briefly activate the refill valve in the test mode and listen carefully near the refill valve for a “clicking” sound as the magnetic coil pulls the plunger in. If the sound is heard as described and water will not pass through the refill valve, there may be a blockage in the water line before the refill valve or, the solenoid valve may require inspection for wear, and removal of waterborne particles. If the sound is not heard as described, proceed to # 5. 5. Disconnect the brewer from the power source. 6. Check for resistance across the coil terminals (200 -2k depending on which coil is being checked). If resistance is not present as described, replace the refill valve. If resistance is present as described, check for debris in the valve.
Flow control used on dual dilution
models only
STRAINER
ITCB & ITB-DD
STRAINER
Removal and Replacement:
1. Remove both wires from the refill valve.
2. Verify that the white shutoff clamp between valve
and tank is squeezed shut.
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54299 030818
TANK HEATERS
2268W Large Dia.
1425W Small Dia.
FIG. 17-2 DV TANK HEATERS
FIG. 17-1 ICB TWIN TANK HEATERS
Location: The tank heaters are located inside the tank and secured to the tank
bottom.
Test Procedures: 1. With a voltmeter, check voltage across the white
wire (120V Models) or red wire (120/208-240V Models) from the terminal block
and black wire from the control board. Connect brewer to the power source. The
indication must be 120 volts ac for two wire 120 volt models or 208-240 volts
ac for three wire 120/208-240 volt models (during a heating cycle). 2.
Disconnect the brewer from the power source.
If voltage is present as described, proceed to #3. If voltage is not present
as described, refer to the Wiring Diagrams and check wiring harness.
3. Disconnect the wires from the tank heater terminals. 4. Check resistance
value across tank heater terminals
and compare to chart.
If resistance is present as described, reconnect the wires, the tank heater is
ok. If resistance is not present as described, replace the tank heater.
HEATER
RESISTANCE
1425W-120V
9.5-11.0
3500W-240V
15.1-17.6
1680W-120V
7.9-9.2
1800W-120V
7.4-8.7
2268W-120V
5.9-6.9
3000W-208V
12.9-15.1
3000W-240V
17.9-20.7
3500W-200V
10.5-12.2
TERMINAL TO SHEATH – INFINITE (OPEN)
NOTE- If any resistance is read between sheath and either terminal, remove and
inspect heater for cracks in the sheath. Removal and Replacement: 1. Remove
the top cover and front access panel as
previously described. 2. Drain water from the tank. 3. Disconnect all the
hoses from the tank. 4. Remove the temperature probe from the grommet
in the tank lid. 5. Remove the level probe from it’s grommet. 6. Disconnect
the green wire from the tank lid. 7. Disconnect the wires from tank heater
terminals. 8. Remove the nuts securing the tank lid to the tank. 9. Remove the
hex nuts securing the tank heater to
the bottom of the tank. Remove tank heater(s) with gaskets and discard. 10.
Install new tank heater(s) with gaskets to the bottom of the tank and secure
with two hex nuts. 11. Install tank lid and secure with nuts. 12. Reconnect
the wires to tank heater terminals.
17
54299 070517
LIMIT THERMOSTAT
FIG. 18-1 LIMIT THERMOSTAT
Location: The limit thermostat is located on the tank lid (on the front of the
tank on twins).
Test Procedures: 1. Disconnect the brewer from the power source and allow to
cool. 2. Disconnect the wires from the limit thermostat. 3. With an ohmmeter,
check for continuity across the limit thermostat terminals.
If continuity is present as described, the limit thermostat is operating
properly. If continuity is not present as described, replace the limit
thermostat.
Removal and Replacement: 1. Remove the wires from limit thermostat terminals.
2. Carefully slide the limit thermostat out from under the retaining clip and
remove limit thermostat. 3. Carefully slide the new limit thermostat into the
retaining clip. Ensure the metal face has good contact with tank.
FIG. 18-2 LIMIT THERMOSTATS
18
54299 070517
TEMPERATURE PROBE
FIG. 19-1 TEMPERATURE PROBE
Location:
The temperature probe is inserted through the tank lid assembly.
Test Procedures: 1. Disconnect the brewer from the power source. 2. With a DC
voltmeter, check voltage across the two
wires at J13 (J3 on ITB) on control board (black probe to black wire, red
probe to white wire refer to FIG 19-2). Connect the brewer to the power
source. The indication should be between 4vdc (cool) to 1vdc at ready
temperature. 3. Disconnect the brewer from the power source.
If voltage is present as described, circuit is working correctly. If voltage
is not present as described, proceed to #4.
FIG. 19-2 TEMPERATURE PROBE
4. Disconnect temperature probe from J9 on control board. Check the resistance across the two terminals of the temperature probe. The indication should be between 10.5K cool to 870 at ready temperature.
FIG. 19-3 TESTING TEMPERATURE PROBE
If resistance is to specification, replace the control
board. If resistance is not to specification, replace the temperature probe.
CONTINUED Removal and Replacement:
Removal and Replacement:
19
54299 070517
TEMPERATURE PROBE
1. Disconnect the brewer from the power source. 2. Disconnect the two pin
connector from J9 on
control board. 3. Pull temperature probe out of it’s grommet. 4. Install in
reverse order.
Calibration:
1. Remove silicon vent fitting from tank lid. 2. Insert a digital temp probe
through the exposed
vent hole in tank lid to the same depth as the factory temp probe. FIG 20-1.
3. Press and hold the “Hidden” button until display
reads “CAL TEMPERATURE SENSOR?” “NO/YES” 4. Select “YES”. The display should
show something
similar to the screen below (FIG 20-2). NOTE: Variables such as tank set
temperature could
show different numbers than the example shown here. Tank must be at it’s ready
temp before calibrating. 5. Press the + (Control) button to increase or –
(Digital) button to decrease temperature reading until it matches the reading
on the thermometer. 6. Exit program mode, remove thermometer, and install vent
fitting. Calibration is complete
200° CAL 200° (-) DONE (+)
Adjust this number
FIG. 20-2 CALIBRATION
FIG. 20-1 CALIBRATE TEMP PROBE
20
54299 070517
VOLTAGE SELECTOR SWITCH
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the three wires from the selector switch. 3. Remove the switch
mounting nut from the under
side of component mounting bracket; remove switch from bracket. 4. Install new
switch in component mounting bracket and secure with mounting nut.
FIG. 21-1 VOLTAGE SELECTOR SWITCH
Location: The voltage selector switch is located on the
component mounting bracket on the base plate.
Test Procedure:
1. Disconnect the brewer from the power source. 2. Disconnect the wires from
the selector switch. With
the selector switch in the 120V position, check for continuity between the two
right terminals of the switch. 3. With the selector switch in the 120/208-240V
position, check for continuity between the two left terminals.
If continuity is not present as described, replace the switch.
FIG. 21-2 VOLTAGE SELECTOR SWITCH TERMINALS
21
54299 070517
POWER SWITCH
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the wires from the power switch. 3. Remove the switch mounting
screws from the left
side of trunk. 4. Install new switch in trunk with the two 6-32 x ¼
mounting screws.
FIG. 22-1 POWER SWITCH (ICB SHOWN)
Location: The power switch is located on the lower right
side of the trunk (ICB) or lower rear panel (ITCB).
Test Procedure:
1. Disconnect the brewer from the power source. 2. Disconnect the wires from
the power switch. With
the switch in the ON position, check for continuity between the upper and
lower terminals on each side of the switch.
There should be continuity between the two left terminals and between the two
right terminals when ON, no continuity when OFF.
If continuity is not present as described, replace the switch.
L1 L2
FIG. 22-2 POWER SWITCH
22
54299 030718
HEATER TRIAC W/HEAT SINK
7. Touch the Tank Heater Triac button to activate triac. Current should be
present on the amp meter along with the word On flashing on the screen and
return to zero amp draw when flashing the word Off on screen.
8. Current shown on meter before activation could mean you have a defective
control board or a shorted triac. Disconnect the Gate -Tan wire from the
control board. Current continues – replace heater triac. Also, check tank
heater for shorted condition.
FIG. 33-1 HEATER TRIAC
Location: The triac is located on the heat sink block
located under the water tank assembly.
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the three triac wires going to the ma-
chine components and/or harness connector. 3. Remove triac from the heat sink
block. 4. Ensure the new triac has heat sink compound
evenly spread on triac plate before securing triac to heat sink block. 5.
Install new triac onto heat sink block and secure with screw.
MEMORY
LOCK UNLOCK
Test Procedure: Infusion Series®
1. Ensure programming lockout switch in unlocked on the control board. (Fig.
33-2)
2. To access the level 2 function screens press and hold the right hidden
button for approximately 5 seconds.
3. The programming of the brewer is divided into four main categories:
Recipes, Calibration, Settings, and Service.
4. Access “Service” menu and enter “Test Outputs” menu. (Fig. 33-3)
5. Scroll to “Tank Heater Triac” menu. 6. Install amp clamp around T1 – blue
wire going to
limit thermostat. Note: No current or amp reading should be shown on amp meter
until activated by the Tank Heater Triac button.
23
FIG. 33-2 Program Lockout Switch
FIG. 33-3 Service Menus
54299 102821
Continued >
HEATER TRIAC W/HEAT SINK G
PLATINUM EDITION
and ensure no amp draw is present on the amp
meter before exiting this screen. When stop has
T2
been selected the text on the screen should also toggle back to say current tank temperature.
T1
No heat or rise in temperature – Check tank heater, limit thermostat and I/O board.
1
FIG. 33-4 HEATER TRIAC
Test Procedure: Platinum Edition®
1. Access Service Menu in programming. Select Test Outputs menu.
2. When the Tank Heater Triac button is selected, the user/technician will be
taken to the tank heater screen. This will show current tank temperature.
3. Install amp meter clamp around triac T1 wire (blue wire going to limit
thermostat). Note: No current or amp reading should be present on amp meter
until Start button is depressed. If current is shown on amp meter before
depressing the Start button, this could mean that the triac has failed in a
shorted condition. Disconnect triac Gate wire going to the I/O board. Current
draw stops – I/O board failure Current draw continues – Triac failure (shorted
condition)
4. Pressing start will turn the heater on ( start button will gray out ), the
temperature will be captured in real time so the user/technician can see if
the water temperature is rising to ensure the heater is functioning properly.
The word “Heating” will display on the screen as another hint to let the user/
technician know the machines heater is in an active state. The user/technician
must shut the heater off
24
2
2
4
FIG. 33-5 SERVICE MENUS (PE)
54299 101821
SOFTHEAT POWER
3. On the Twin, remove two screws securing power supply to base. On the single, remove two screws securing component mounting bracket to base, then remove four screws securing power supply to component mounting bracket. NOTE: When installing new power supply, verify the voltage selector switch is set to the proper voltage.
FIG. 23-1 SOFTHEAT CONTACTS
Location: The SoftHeat contacts are located on the lower
front of the trunk.
Test Procedure:
1. Check circuit breaker, reset if tripped. 2. Remove server(s). 3. Set meter
to DC 24 volts scale. Check for 24VDC
between the right (+) and left (-) terminals. Fig. 23-1.
If voltage is not present as described, continue to # 4.
4. Remove front panel . Verify LED is illuminated. Fig. 23-2 & 3.
5. If illuminated, Check output of power supply for 24VDC. If not
illuminated, Set meter to AC 208-240 volts scale (depending on the incoming
line voltage). Place the meter probes on the power supply “Line in” terminals.
Voltage should read about the same as line voltage across main terminal block.
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the wires from the power supply.
25
L1
–
24V
L2 or
NEUTRAL
+ 24V
POWER LED
FIG. 23-2 SH POWER SUPPLY
FIG. 23-3 TEST OUPUTS
54299 030718
TRANSFORMER
2. Secondary Side: Measure voltage across the secondary side when the load is
connected. The volt reading should be the expected value of the step down
rating. If the step down volt reading is extremely low or zero, this is an
indication of a possible shorted load component in the circuit which could
damage the transformer too.
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the transformer 5 pin wire connector. 3. Remove the transformer
mounting screws to
remove transformer from mounting bracket. 4. Install new transformer and
secure with the screws
from step 3. 5. Reconnect transformer 5 pin wire connector.
FIG. 24-1 TRANSFORMER
Location: The transformer is located on the component
mounting bracket on the base plate.
Test Procedure: Transformer: 120VAC – Primary (Black & White) 12.0VAC –
Secondary (Yellow & Yellow)
Transformer failures usually result from short circuits on the load side of
the transformer which can produce internal heat, breaking down the transformer
winding insulation resulting in failure. Inspect transformer visually for
bulge or burn marks.
1. Primary Side: Measure voltage across the primary side of the transformer
with the input wires connected and measure the input voltage across the wires
when disconnected. The volt reading should relatively be the same. If the volt
reading is much lower across the transformer, this is a possible indication of
a faulty transformer.
26
FIG. 24-2 TRANSFORMER
54299 101821
TROUBLESHOOTING SOFT HEAT FEATURE AT BREWER:
Issue: SH server lights not working when sitting on brewer 1. Check to make
sure server is fully engaged and touching brewer contacts. 2. Check brewer
contacts with multimeter, should be getting 24 VDC 3. If no power is showing
up at brewer contacts remove front panel. Power off brewer, check that wiring
connections to the back of the contacts are secure and not loose. Tighten if
loose and power back up to confirm 24 VDC with multimeter 4. If connections
are secure take off platform cover and look at PLC board. Make sure there is
no water or coffee on the PLC board or other visible damage. If there is
evidence of drips, please check server guide rails. They should fully
tightened with a sealing washer, replace if necessary. 5. The Green LED on the
24VDC Supply, located to the right of the terminal block, should be ON. 6.
Check connection J3-16 and J3-8 (red and black wire coming from power supply)
are giving 24VDC to the PLC board. If not getting adequate voltage check
connections on power supply, ensure L1 & L2 are supplying 208V or 240V on
standard models or 120V from L1 and N if DV. 7. If voltage properly routed to
power supply, but not seeing 24 VDC at J3-16/J3-8, replace power supply
(ensure it is flipped to 230V for standard 208V and 240V models or 120V for DV
units.) 8. Check that the terminals are fully seated in the J3 Connector. 9.
On the PLC Board, the HRT LED (LED1) should be blinking, On for 1 Sec and Off
for 1 Sec. 10. Check SH Server LEDs on another Brewer or Stand.
Issue: SH Server lights up, but doesn’t turn solid after brew (standard slow
blink) 1. Check to make sure server is fully engaged and touching brewer
contacts 2. Check brewer contacts with multimeter, should be getting 24 VDC 3.
Enter program mode, go to Service, and toggle to SH Version # screen. Readout
should show PLC App
01.XX and PLC Boot 01.XX, if this doesn’t show up on the second line, please
check harness connection at J9 on main board (wht/grn/blk wires). If
connections are showing good, check PLC board for any signs of damage. 4. On
the PLC Board, the HRT LED (LED1) should be blinking, On for 1 Sec and Off for
1 Sec. 5. If SH Version # is reading for PLC board, next check to see if the
server itself is being read. Also under service and SH Version# the screen
should read SH 01.XX on the top line. Note that the SH Server must be docked
at the Brewer for 10 to 20 seconds before the SH Version# screen is entered.
6. If SH version is being detected, but still blinking after brews, the
conductance probes in the faucet shank of server could be dirty or covered.
Empty server, remove faucet shank, and take wire brush to clean out server.
Build up of coffee grounds and coffee could prevent server from seeing product
and create a nuisance trip where the server thinks it is empty.
Issue: SH server blinks rapidly after brew completed. 1. SH server has an
error, try brewing into it again. If failure continues to happen to this lone
server, please
have it replaced.
Issue: SH brewer not detecting server stand (Wireless models only) 1. Ensure
server stand is a wireless model, data plate will denote model type with
wireless in description. If
not a wireless server stand a wireless kit will need to be ordered. 2. If the
server stand is a wireless model, check first to see if contacts are showing
24 VDC. 3. Take off stand cover, check to ensure all 3 LEDS are lighting up on
wireless PLC that the HRT LED is flash-
ing On for 1 Sec, and Off for 1 Sec. The BT LED will be ON if the Stand is
part of a Wireless Network or flashing if it is searching. The WIFI LED should
be OFF in a Stand
27
54299 030718
TROUBLESHOOTING SOFT HEAT FEATURE AT BREWER:
4. Check to make sure nothing metal is sitting under server stand or metal
walls blocking signal for server stand to brewer. (Stand may need repositioned
close or away from material that will block the radio signal)
Issue: SH stand dropping from webpage dashboard (Wireless models only) 1.
Check under dashboard configuration for Brewer that network is locked (Areas
with high traffic of Blue-
tooth and wifi create potential for connectivity issues, locking network out
after setup will minimize this potential)
28
54299 030718
TOUCH SCREEN/DISPLAY
PLATINUM EDITION
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the wire harness connectors from the
board. 3. Remove the nuts from the left & right side of the
board. 4. Install new touch screen assembly and secure with
the nuts removed from step 3. 5. Reconnect the wiring harness connectors.
FIG. 25-1 TOUCH SCREEN
Location: The touch screen is located front center of the
hood. Access the touch screen by removing the top cover.
Test Procedure: Input D/C Voltage
1. Disconnect the brewer from the power source. 2. Remove top cover. Locate
J10-4 pin connector on
touch screen board (Fig. 25-2). 3. Reconnect the brewer to the power source.
4. Apply voltmeter across J10-4 (positive) and J10-2
(negative) terminals. D/C voltage reading must be 13.8VDC or higher.
Voltage input correct but screen is not illuminated, replace touch screen
assembly.
Front FIG. 25-2 TOUCH SCREEN
J10
Rear
29
54299 101821
BREW/WAVE DISPENSE VALVE
PLATINUM EDITION
If voltage is present as described, but no coil action is observed, valve is
defective. Replace valve and test again to verify repair.
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Drain the water tank below the brew dispense valve
water outlet fitting. 3. Disconnect the wires from the brew dispense valve. 4.
Disconnect the water inlet tube and air tube going
to the brew dispense valve. 5. Unscrew sprayhead to access the nut securing
brew dispense valve to the hood panel. 5. Remove the nut securing brew
dispense valve.
FIG. 26-1 WAVE BREW DISPENSE VALVE
Location: The wave dispense valve is located inside the top
hood behind the front face plate.
Water Fitting
Test Procedures: 1. Go into program mode and select the “Service” icon and enter Test Outputs menu. 2. Be sure brew funnel & server are in place before activating valve. 3. Check the valve for coil action. Turn on the valve with the test mode. Listen carefully in the vicinity of the brew valve for a click as the coil pulls the plunger in. If no sound is heard as described, proceed to #4. If the sound is heard as described, there may be a blockage in the valve , hose, tank, or sprayhead. Disconnect the brewer from the power source. Remove the valve and inspect for blockage, and de-lime all related areas. 4. Connect the voltmeter leads to the coil terminals. Turn on the valve with the test mode. The indication will be 2-3VAC off, 120VAC on. Set the meter to DC volts. The indication should be 150160VDC when off, 0V when on. If the polarity of meter leads are reversed, reading will indicate -150-160VDC. (Double these readings for 240 volt coils)
Air Fitting
FIG. 26-2 WAVE BREW DISPENSE VALVE
30
54299 101821
AIR PUMP
PLATINUM EDITION
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the air pump wire connector from the
main wiring harness. 3. Disconnect tube from air pump barb fitting. 3. Loosen
the air pump clamp screw and remove air
pump from clamp.
FIG. 27-1 AIR PUMP
Location: The left & right air pump are located in front
behind lower trunk panel.
Test Procedure:
1. Go into program mode and select the “Service” icon and enter Test Outputs
menu.
2. Apply voltmeter leads across the air pump terminals being checked for DC
voltage at J5-4 pin connector (Fig. 27-3). J5-4 – BLU Wire: Right air pump
(negative wire) J5-3 – BLU/WHI Wire: Right air pump (positive wire) J5-2- ORG
Wire: Left air pump (negative wire) J5-1 – ORG/WHI Wire: Left air pump
(positive wire)
3. Touch the left or right air pump button to activate the air pump. The volt
reading should be approximately around 12.0 to 13.5VDC. Note: The test is a
momentary voltage output.
Voltage Present: Check air pump check valve for blockage before replacing air
pump. Voltage Not Present: Replace I/O Board.
FIG. 27-2 AIR PUMP
J5
FIG. 27-3 I/O Board J5 Connector
31
54299 101821
AIR PUMP CHECK VALVE
PLATINUM EDITION
7. Touch the applicable left or right air pump test button.
8. The water should be bubbling from introduction of air from the air pump
through the check valve.
No change in tone, air sensation or bubbling. Check air pump motor for
operation and inspect for kinked air pump tube before replacing check valve.
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the tubes from the check valve barb
fittings. Replace check valve. Note: The check valve has an arrow embossed in
the valve body to show flow direction.
FIG. 28-1 AIR PUMP CHECK VALVES
Location: The left & right air check valves are located in
front behind lower trunk panel.
Test Procedure: Option 1 or 2 Option 1: The check valve prevents water from
enter-
ing the air pump assembly. 1. Disconnect brewer power and prepare brewer for
air pump check valve test by removing top panel. 2. Remove the applicable pump
tube at the brew
valve base being tested. 3. Reconnect brewer power. Go into program mode
and select the “Service” icon and enter Test Outputs menu. Scroll (>) to Air
Left & Right Air Pump button. 4. The tube removed from the valve base, place
finger over tube outlet. Touch the applicable left or right air pump button.
You should feel air pushing on your finger tip. Next, squeeze the end of tube
or firmly place finger over tube outlet, the air pump motor will change in
tone when blocking and unblocking the air tube outlet. Option 2: Extension
tube will be required for test. 5. The tube removed from the valve base,
install the extension tube onto the end of this tube. 6. Place the end of the
extension tube into a cup of water away from the brewer.
32
FIG. 28-2 AIR PUMP CHECK VALVE
54299 101821
BREW FUNNEL SENSING COIL
PLATINUM EDITION
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the wire connector from the funnel
sensing coil. 3. Remove the coil mounting plate nuts. 4. Release center push
in fastener from funnel sens-
ing coil. Replace sensing coil.
FIG. 29-1 BREW FUNNEL SENSING COIL
Location: The brew funnel sensing coils are located inside
the top hood behind the front face plate.
Test Procedure: Note: The I/O Diagnostics menu will give current
status of different operations done by the Brewer IO Board. 1. Go into program
mode and select the “Service” icon and enter Diagnostics menu. 2. Select and
touch the I/O Diagnostics button. 3. Use the scroll arrow (upper right corner)
to move forward to the next screen. 4. The funnel sensing coil “RFID
Frequency” must read between 124.0 – 127.0 kz (Fig. 29-3)
Frequency low or out of range – First, inspect harness and connector for an
open connection between the funnel sensing coil and the I/O board before
replacing funnel sensing coil.
FIG. 29-2 BREW FUNNEL SENSING COIL FIG. 29-3 SENSING COIL RFID FREQUENCY
33
54299 101821
FUNNEL LOCK SOLENOID
PLATINUM EDITION
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the wires from the funnel lock solenoid
coil. 3. Remove the 2 nuts securing the funnel lock solenoid
to the hood plate.
FIG. 30-1 FUNNEL LOCK SOLENOID
Location: The funnel lock solenoid is located inside the top
hood behind the front face plate.
Test Procedure:
1. Go into the software menu and select the “Service” icon and enter Test
Outputs menu.
2. Be sure brew funnel & server are in place before activating funnel lock
solenoid.
3. Check the funnel lock for action. Select and touch the funnel lock button
to activate the funnel coil, plunger should drop down in front of brew funnel.
(Fig. 30-3)
4. Install meter leads across funnel lock coil terminals while wires are
still attached. Turn on funnel lock, 110.0VDC or slightly lower will be
present on the voltmeter display and drop down to 85.0VDC after 2 seconds.
Funnel lock turned off, voltage will go 00.0 VDC.
Voltage present & zero action: Replace funnel lock solenoid. Voltage not
present: Replace I/O board and check for shorted funnel lock coil.
FIG. 30-2 FUNNEL LOCK SOLENOID FIG. 30-3 FUNNEL LOCK SOLENOID
34
54299 101821
INPUT/OUTPUT BOARD
PLATINUM EDITION
Error Message If the board is not receiving the proper commands
or a loss of communications occurs this screen will be displayed (Fig. 31-3)
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect all wiring harness connectors from the
I/O board. 3. Remove the board mounting nuts. Tilt and lift
board from bottom mounts.
J4
FIG. 31-1 I/O BOARD
Location: The I/O board is located lower right front
behind lower trunk panel.
Test Procedure:
Note: Ensure the main brewer On/Off switch is turned
on.
J15
1. Apply voltmeter leads across terminals J15-5 & J15-4 on the I/O board. The
meter reading will be 12.0VAC.
2. Check I/O board J15-1 & J15-2 for 120VAC output going to the primary side
of the transformer.
3. No 120VAC output – Replace I/O board. 4. Verify I/O board D/C output to
PLC board. 5. Disconnect J4 connector from I/O board. 6. Install voltmeter
leads across J4-4 (positive) and
J4-2 (negative) male terminal pins on the I/O board. 7. The reading must be
15.8VDC +/- 10%. 8. Voltage not present – Replace I/O board.
FIG. 31-2 I/O BOARD
I/O Board J4-4 Pin Connector Terminal 1: White Wire, TX Terminal 2: Black Wire, Negative/Ground Terminal 3: Red Wire, RX Terminal 4: Green Wire, Positive/Input
FIG. 31-3 I/O BOARD ERROR MESSAGE
35
54299 101821
BUNNLink BOARD
PLATINUM EDITION LED Identification:
LED 1 – Solid Green = WiFi board is connected to the cloud. · Flashing Green =
RX/TX to the cloud is in
process. · Off = WiFi board is not connected to the cloud.
LED 2 – Solid Green = WiFi board is detecting the brewer. · Flashing Green = WiFi board is powering down. · Off = WiFi board is not detecting the brewer. · LED 3 – Not used.
LED4 – Not used.
FIG. 32-1 BUNNLink BOARD
Location: The BUNNLink board is an option that can be
found in Infusion Series brewers. The board from the BUNNLink kit installs at
the bottom, inside the machine under the water tank. See pictorials next page
for approximate placement among Infusion Series models.
Test Procedure:
1. Locate the Qty-5 LEDs on the BUNNlink board. 2. LED #5 should be
illuminated solid green to
indicate power is connected. 3. LED #5 not illuminated means power is not
connected or loss of power. 4. Set voltmeter on DC voltage. 5. Go to 4 pin
connector and apply voltmeter leads
across terminal 1 (+5V) & 4 (Ground). 6. Voltage input is 5.0VDC.
Voltage present & no LED #5 illumination Replace BUNNLink board.
LED 5 – Solid Green = Power is connected. · Off = Power is not connected.
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the wiring harness connector(red/yel-
low/blue/black), USB A, and USB B micro cable. 3. Depress standoff snaps to
release board. 4. Assemble new BUNNLink board over the top of
the standoff snaps and push to fully secure into place. 5. Reconnect the
wiring harness connector (red/yellow/blue/black), USB A, and USB B micro
cable. 6. Go to BUNNLink Activation pages for instruction.
LD1
LD5
Power Input Connector: Pin 1 – +5V Pin 2 – TX (to brewer) Pin 3 – RX (from brewer) Pin 4 – Ground
FIG. 32-2 FUNNEL LOCK SOLENOID
36
54299 101821
Continued >
PLATINUM EDITION BUNNLink BOARD – MODEL PLACEMENT
FIG. 33-2 52100.0100 ICB SH PE, 120/240V
FIG. 33-2 53600.0100 ICB TWIN SH PE, 120/240V SST
FIG. 33-2 53300.0100 ICB-DV PE, 120V
FIG. 33-2 54000.0100 ITCB-DV HV PE, 20/208-240V
FIG. 33-2 53400.0100 ICB Twin PE, 120/240V SST
37
FIG. 33-2 52500.0100 ITCB-DV PE, 29″ W/Tray
54299 101821
Continued >
BUNNLink WIFI ACTIVATION
PLATINUM EDITION
If you experience any issues with Activation, contact a BUNNlink administrator: bunnlink@bunnlink.com.
1. Access the Wi-Fi Setting page on the device you will be using tablet, laptop, or phone. From the Wi-Fi Setting page locate the Wifi board serial number. This should be on display in the network search area.
- If the Wifi board serial number is not present, power cycle the machine three times. Wait five seconds between cycles to ensure the board has completely shut off*
3. Select the Wifi board serial number. Enter Bunn123! in the password text field.
4. After a connection to the network has been made, open the web browser of your choice (Google, Safari, Mozilla).
5. Enter 192.168.1.1 in the web address bar
6. On the BUNN login page enter the username BunnService. Enter Bunn123! in the password text field. Pres the log in button
7. From the home page select settings from the menu bar.
8. From the drop down menu, choose the desired network to join.
9. Enter the password for the specific networks and press apply.
10. See BUNNLink Brewer Activation page to activate BUNNlink on the brewer.
38
54299 101821
Continued >
BUNNLink LTE ACTIVATION
PLATINUM EDITION
If you experience any issues with Activation, contact a BUNNlink administrator: bunnlink@bunnlink.com.
1. Scan the QR Code located on the machine. Scan the QR Code sticker located in the package or on the back of the BUNNlink board itself.
Note the serial number will display and activation date will read “Not Activated”.
2. Once the QR codes is scanned on a smartphone or tablet this screen will display. Enter the pin 6601. When the digits are entered in the text boxes click the submit. The far right image shows an incorrect pin number.
3. The activation page shows the MAC address of the board, verify this number matches the IMEI number on the board itself. Press activate to continue. After selecting the activate button there will be a confirmation screen to confirm the activation of the board.
4. Upon successful activation this screen will show on the device. Confirm
the MAC address and IMEI match. SIM card information, activation date, and the
network status will display. Network status is not an indication of the board
establishing a cloudlink connection. Activation of the board can take up to
fifteen minutes as stated on the activation page. The board is completely
activated once the LED changes color from blue to green.
5. Verify the gateway has been connected, the machine serial number, signal
strength, and cloud link by accessing the BUNNLink tab from machine settings
on the unit.
Continued > 6. See BUNNLink Brewer Activation page to activate BUNNlink on
the brewer.
39
54299 101821
Continued >
PLATINUM EDITION BUNNLink BREWER ACTIVATION
If you experience any issues with Activation, contact a BUNNlink
administrator: bunnlink@bunnlink.com. 1. Hold the BUNN logo for three seconds
to access the Service Access screen.
2. From Service Access, select Advanced and enter passcode.
3. From the Advanced Menu select Service icon.
4. Select Diagnostics.
5. Select BUNNlink Diagnostics button.
6. Press the Activate BUNNlink button. Once selected the button will change
its status to read schedule update.
40
54299 101821
PLATINUM EDITION BUNNLink PRODUCT REGISTRATION
Scan to register your machine on BUNNlink® for reports and further support.
Please provide this QR code to the customer or manager of the site.
41
54299 101821
LIQUID LEVEL PROBE
PLATINUM EDITION
Removal and Replacement: 1. Disconnect the brewer from the power source. 2.
Disconnect the wire from the level probe. 3. Lift level probe out of grommet.
FIG. 34-1 LIQUID LEVEL PROBE
Location: The liquid level probe is located inside the top
hood on the tank lid.
Test Procedure:
1. Go into the software menu and select the “Service” icon and enter
Diagnostics menu.
2. Select and touch the I/O Diagnostics button. 3. Use the scroll arrow
(upper right corner) to move
forward to the next screen. 4. Refill State: Shows the current state of the
tank
refill control. a) Disabled b) Manual Override c) Filling d) Not Full e) Full
5. Liquid Level Status: Shows the state of the liquid level in the tank. a)
Below Probe b) OK
FIG. 34-2 LIQUID LEVEL PROBE
42
54299 101821
Continued >
PLATINUM EDITION LIQUID LEVEL PROBE DIAGNOSTIC A/D #
FIG. 35-2 DEFAULT REFILL THRESHOLD #
FIG. 35-1 LIQUID LEVEL PROBE
Test Procedure:
The Input/Output Diagnostic screen with the Liquid
Level Probe A/D number can be used to view the operation and/or troubleshooting of the level circuit
FIG. 35-3 LEVEL PROBE A/D LOW #
by viewing the A/D number.
Test Procedure:
155 – Factory Refill Threshold #; Trigger On/Off
1. Go into the software menu and select the “Service” point of inlet solenoid valve.
icon and enter Diagnostics menu.
Liquid Level Probe A/D # under 155 threshold; Level
2. Select and touch the I/O Diagnostics button.
probe circuit is shorted, no activation of inlet sole-
3. Use the scroll arrow (upper right corner) to move noid valve.
forward to the next screen.
4. Liquid Level Probe: Shows the A/D (analog signal
converted to digital format) count of the liquid level
probe. (Fig. 35-3 & 35-4)
5. The Factory Refill Threshold A/D default number
(155) can be viewed or calibrated by entering
the software Service Icon” and entering the Refill
Calibration menu. (Fig. 35-2)
6. A Factory Default Refill Threshold (155) number
is the On/Off trigger point for the inlet solenoid
valve.
7. Geographically it’s rare to have very low water
FIG. 35-4 LEVEL PROBE A/D HIGH #
TDS (Total Dissolved Solids) levels which does
not require to adjust the brewer “Water Threshold” Test Procedure:
A/D setting.
155 – Factory Refill Threshold #; Trigger On/Off
8. In the event of low water TDS and/or hinder the point of inlet solenoid valve.
operation of the liquid level circuit, the Refill Liquid Level Probe A/D # over 155 threshold; Level
Threshold can be adjusted. See Refill Calibration probe circuit is open, activation of inlet solenoid
Procedure.
valve.
43
54299 101821
PLATINUM EDITION LEVEL PROBE/REFILL CALIBRATION
FIG. 36-1 REFILL CALIBRATION
5. If the A/D number is close or higher than the Factory calibration
threshold number of 155, the refill calibration threshold will need to be
calibrated/ adjusted.
6. You take the actual A/D number (water touching level probe) and subtract
it from the maximum threshold number 255.
7. Next, take the difference and divide by 2 and then add that number back
onto the actual A/D number (water touching probe).
8. Enter the new A/D number by using the +/- buttons in the Refill
Calibration menu.
9. Exit the software menus and go back to Home screen.
Example: The Liquid Level Probe A/D number displays 80 when water is touching the level probe.
FIG. 36-2 DEFAULT REFILL THRESHOLD #
Location: The Factory Refill Calibration menu can be ac-
cessed by entering the software and selecting the “Service Icon” and then
enter the Refill Calibration menu. (Fig. 36-1)
255 minus 80 = 175 175 divide by 2 = 87.5 87.5 add to 80 = 167.5 (round up to
168) A/D number will be the new Refill Calibration Threshold.
Note: Anytime Factory Defaults is restored on the brewer, Refill Calibration
Threshold will return to Factory Default of 155.
Calibration Procedure: Procedure for calibrating the Factory Default 155 Threshold A/D number when the water supply or filtered water has a very low Total Dissolved Solids (TDS). (Fig. 36-2) Water Threshold Operation Range: 0 – 255 Water Threshold Adjustment Range: 20 – 230 Factory Water Threshold Default: 155
1. Go into the software menu and select the “Service” icon and enter
Diagnostics menu.
2. Select and touch the I/O Diagnostics button. 3. Use the scroll arrow
(upper right corner) to move
forward to the next screen. 4. Note the Liquid Level Probe A/D number when
water is touching the liquid level probe. A typical A/D reading with average
TDS will be around 10 or less.
44
54299 101821
PLATINUM EDITION TOUCH SCREEN CALIBRATION
FIG. 37-1 TOUCH SCREEN CALIBRATION
Location: If the calibration points in NVM are blank, the
calibration touch screen will automatically appear. If the calibration points
have been set, the touch screen calibration screen can be accessed by pressing
and holding anywhere on the splash screen during a power up.
User Symptom/Problem: In rare cases the screen may be slightly out of
calibration. The complaint might be “doesn’t respond well when pressing
recipes, batch sizes, brew or entering software menus”.
Calibration Procedure: Procedure for calibrating the user touch screen. 1.
Access touch screen calibration menu by pressing
and holding anywhere on the splash screen during a brewer power up. 2. When
the touch screen calibration screen is shown, precisely touch each of the four
targets (filled circles) as they appear on the screen. (Fig. 37-2) 3. Once all
four target points have been touched, the calibration points will be saved
into non-volatile memory (NVM). 4. Exit calibration screen by pressing and
holding on the splash screen.
FIG. 37-2 CALIBRATION TARGETS
45
54299 101821
PLATINUM EDITION PLATINUM EDITION ERROR/WARNING MESSAGES The below list is an
explanation and parameters for triggering an Error Message and their Possible
Causes. 1. Error Message “Heating Time Too Long”
Heater on continuously greater than (>) 60 minutes. Powering machine down or
refill valve turns on will reset the 60 minute timer. Possible Cause(s): Tank
Heater, Limit Thermostat, Triac or CBA/Temperature Sensor failure.
2. Error Message “Fill Time Too Long” — Refill on greater than (>) 30
minutes. Possible Cause(s): Main water supply is turned Off, Water Solenoid
failure, debris blocking or restricting water flow through the .500 flow
control assembly, main control board voltage Output failure.
3. Error Message “Temp Sensor Out Of Range, Check For Bad Connections”
Temperature less than (<) 32° Fahrenheit. Possible Cause(s): Temperature
sensor failure or poor temperature sensor connection at the control board
connector or temperature sensor wiring harness connector itself.
46
54299 101821
Continued >
PLATINUM EDITION PLATINUM EDITION ERROR/WARNING MESSAGES The below list is an
explanation and parameters for triggering an Error Message and their Possible
Causes. 4. Error Message “Temp Sensor Out Of Range,
Check Wire For Shorts” -Temperature greater than (>) 230° Fahrenheit. Possible
Cause(s): Temperature sensor failure or temperature sensor wires are pinched
between two surfaces or connected to each other.
5. Error Message “I/O Board Not Detected” The board is not receiving the
proper commands or a loss of communication occurs. Possible Cause(s): The TX
or RX wires between the I/O board and the Touch Screen (PLC) assembly may have
an intermittent or open connection Display Board: J10-4 J10-1 – Red Wire,
Receiving (RX) J10-2 – Blue Wire (Negative) J10-3 – White Wire Transmission
(TX) J10-4 – Green Wire (Positive)
6. Error Message “PLC Board Not Detected” The board is not receiving the
power supply. Possible Cause(s): The power wires between the I/O board and the
Touch Screen (PLC) assembly may have an intermittent or open connection. Power
supply to the PLC is 13.8VDC to 15.0VDC.
47
54299 101821
Continued >
PLATINUM EDITION PLATINUM EDITION ERROR/WARNING MESSAGES
The below list is an explanation and parameters for triggering an Error
Message and their Possible Causes.
7. Warning Message “Software Upgrade Needed, Please Reprogram”- In certain
use cases, one board on the machine was upgraded while another board was not.
If this happens and the software on the machine is out of date, a pop up will
appear to let the user know a software upgrade is needed. The machine will
have the ability to show what software needs to be updated which will be
communicated on the screen. In some instances you may have two boards that
need to be upgraded. If this happens each piece that needs to be upgraded will
display it’s own error message. This message will not impede brewing or any
other functions of the machine. Pressing ok will clear the message for
continued use. The message will only be permanently cleared once the software
has been upgraded. In the case the user clears the message and does not
complete any action on the machine, the alert will display after 3 minutes.
48
54299 101821
IMPORTANCE OF CALIBRATING BREWER FLOW RATES
Brewer “Calibrate Flow” menu gives you the capability to verify and adjust
brewer dispense flow rates to achieve accurate and optimum recipe volumes and
flavor profile. The water flow rate deliverable calibration menus found in
Infusion Series brewers are sprayhead, by-pass and dilution.
Brewer Water Flow Fundamentals The understanding of maintaining cleanliness,
maintenance and calibration will address a wide variety of
issues that can affect brewer flow rate deliverances and flavor profile.
· Component Tolerances: Most components have a small amount of tolerance from
the start and can degrade over time due to life cycles, neglect or mineral
deposit build-up.
· Low Water Pressure: Some DBC brewers have a feature where the brew will
pause during a brew. The brewer refill cycle must maintain fullness of water
at level probe within certain amount of time to maintain a certain amount of
weight above the dispense valve for water flow accuracy. If the level probe is
dry too long during a brew cycle, the DBC brewer will pause the brew cycle and
wait until level probe sees water again before continuing on with original
brew cycle. This could have an effect on flavor profile because of starting
and stopping of the brew cycle for that particular recipe.
· Hard Water: High water grain hardness can affect flavor profile and brewer
performance. The accumulative of mineral deposit narrowing the dispense path
over coffee/tea funnel will greatly affect recipe volumes and flavor profile.
· Water Density: The density of water is the weight of the water per its unit
volume, which depends on the temperature of the water. Ambient water
temperature verses 200° F. water temperature correlates to approximately 4 %
expansion of water. Ambient water will be lesser volume and 200°F. will be
more volume. BUNN suggests for optimum performance to calibrate the water flow
when the water is at least a minimum of 190° F. and up.
· Tank Pressure: All of BUNN tanks are ventilated to the atmosphere which
correlates to a conventional unit of pressure, the normal pressure of the air
at sea level, about 14.7 pounds per square inch. Anytime the tank ventilation
becomes restricted or blocked, the tank pressure will alter the dispense flow
rate out the dispense path which will result inaccurate recipe volumes and
affect flavor profile.
· Cleanliness: A build-up of mineral deposits or coffee oils in the sprayhead
holes will restrict water flow and impact brewing profile. Sprayhead panel
must be kept clean on a daily basis to prevent unwanted impurities being added
to a fresh brew. By performing the daily clean task, you will help ensure the
quality of the brewed profile.
Reason/Conditions to Perform Brewer Water Flow Rate Calibration
· New install/set-up, final placement or relocation of brewer. · Short filling
of recipe volumes (mineral deposit build-up). · Change or alteration of number
hole sprayhead for recipe flavor profile. · During scheduled preventive
maintenance tasks. · After a general brewer water related service repair.
49
54299 101821
PLATINUM EDITION WATER FLOW CALIBRATION MENUS
The machine calibration menus are essential to brewer functionality and can be
used as a testing tool for checking water flow rates out the sprayhead, by-
pass and/or dilution nozzle. The collected volume during test can show if you
have a flow restriction somewhere in the hot water tank output dispense path
or too much output water flow in a minutes time. The collected volume during
dilution flow test can show if you have low or high incoming water pressure
and/or flow restriction to the brewer dilution nozzle. By performing the 60
second flow test and entering the delivered volume for each left and right
sprayhead, by-pass and/or dilute valve will assure the accuracy in the related
recipe total volume and flavor profile.
FIG. 38-1 ADVANCED MENU
Location: Enter Service Access screen and select Advanced Icon, plus passcode.
From the Advanced Menu select Calibrations icon.
Calibration Flow Menus: A specific calibration menu may be found among
brewer models which will be used to calibrate the flow rates of the
sprayheads, bypass valves, and/or dilution valves. 1. Infusion Series Coffee
Brewers. (Fig. 38-2) 2. Infusion Series Tea Brewers. (Fig. 38-3) 3. Infusion
Series Coffee & Tea Brewer. (Fig. 38-4)
FIG. 38-2 ICB FIG. 38-3 ITB
FIG. 38-4 ITCB
50
54299 101821
Continued >
PLATINUM EDITION WATER FLOW CALIBRATION STEPS
The sprayhead instruction demonstrates the steps
on performing the calibration. The Bypass and Dilution
calibration process performs the same way other than
dilution calibration will deliver larger amount of water
1
which requires a larger vessel to capture the volume.
1. The Sprayhead Icon will be used to calibrate the flow
from the sprayhead. Sprayhead and Bypass can only be
calibrated when the tank has reached the ready or set
temperature. This will ensure that the calibrations are
accurate and reflect the machine at its brewing tempera-
ture.
1
2. For Single ICB models, there is only 1 sprayhead to
calibrate. For Twin ICB models, there is a left and a right
sprayhead to calibrate. Ensure the container is under the
correct sprayhead for calibration.
Select the START button to begin a 1-minute dispense of
2
hot water from the sprayhead.
3. The display will show the time remaining for dispense along with the
option to stop the dispense if necessary. The 60-second timer on the display
will count down to zero.
3
4. When the counter reaches zero, the display will
change to allow the measured amount of water in the
container to be entered and saved in programming.
Use the +/- buttons to increment the flow number to the
measured amount of water produced from 60 second
4
dispense test.
5. Once the flow number has been set, touch the SAVE button. The display should now show the actual flow rate of the sprayhead.
6. When you perform Bypass or Dilution calibration, each step is mirrored like the sprayhead calibration.
5
51
54299 101821
BLK RED WHI
L1 L2 N
SCHEMATIC WIRING DIAGRAM ITCB-DV GRN
MAIN ON/OFF SWITCH
BLK-18 BLK-14
BLK J1-1
TRIAC VIO
LIMIT THERMOSTAT
BLU-14
BLK-14
TANK HEATER 1680W
SELECTOR SWITCH WHI-14
BLU-14 WHI/VIO-14
(1425W ITCB-C-DV ONLY)
FUNNEL SENSOR
1
3
TANK HEATER RED-14
1800W
J1-2 C
WHI/VIO
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/VIO
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
WHI
WHI/VIO
DILUTION SOL
WHI
WHI/GRN
DISPENSE SOL
WHI
REFILL WHI/BLU SOL
WHI
WHI
J17-14 J15-1
J15-5
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK PNK LEVEL PROBE
GRN
BRN/BLK BRN/WHI
FUNNEL
SOL
LOCK
TEMP PROBE
J13-1
WHI BLK
t
J3-1
PNK GRN
VIO
J3-5
VIO
J3-8 J2-1 J2-5
J2-10
1
CONTROL PANEL ASSY
BREW A
BREW C
HALF
PROG L PROG R
FULL
J2-15
J2-20 J2-22 J16-1
BREW B
ON/OFF
STATIC
SHIELD 22
HALF FULL ON/OFF
J16-5 J4-1
J4-4 J18A-1
USB CBA J18A-5
J18A-8
120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE
SINGLE PHASE
53869.0000B 06/17 ©2017 BUNN-O-MATIC CORPORATION
52
54299 070517
GRN/YEL
L1 N
BLU
BRN
SCHEMATIC WIRING DIAGRAM ITCB-A,B&CE w/TRIACS
MAIN ON/OFF SWITCH
GRN/YEL
BLU
BRN
Chassis Ground Chassis Ground
BLK-18 BLK-14
EMI FILTER
RED
FUNNEL SENSOR
J1-1
VIO
1
3
J1-2 C
WHI/VIO
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/VIO
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
RED
J17-14 J15-1
J15-5
BRN/BLK BRN/WHI
BLK
WHI
PRIMARY
YEL
YEL
12VAC
J13-1
WHI
BLK
J3-1
PNK GRN
J3-5
VIO VIO
LIMIT
THERMAL
TRIAC
THERMOSTAT
FUSE
BLU-14
BLK-14
TANK HEATER
THERMAL FUSE
RED-14
WHI/VIO
DILUTION SOL
RED
WHI/GRN
DISPENSE SOL
RED
REFILL WHI/BLU SOL
RED
RED
BRN/BLK BRN/WHI
SOL
FUNNEL LOCK
TRANSFORMER 10VA
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-8 J2-1
1 CONTROL PANEL ASSY
J2-5 J2-10
BREW A
BREW C
HALF
PROG L PROG R
FULL
J2-15
J2-20 J2-22 J16-1
BREW B
ON/OFF
STATIC
SHIELD 22
HALF FULL ON/OFF
J16-5 J4-1
J4-4 J18A-1
USB CBA J18A-5
J18A-8
200-240V AC 2 WIRE SINGLE PHASE
53869.0001A 05/14 ©2015 BUNN-O-MATIC CORPORATION
53
54299 070517
L1 L2 N
SCHEMATIC WIRING DIAGRAM ICB-DV GRN
BLK RED WHI
MAIN ON/OFF SWITCH (Late Models only)
BLK-18 BLK-14
BLK J1-1
TRIAC
LIMIT THERMOSTAT
BLU-14
BLK-14
TANK HEATER 1680W
SELECTOR SWITCH WHI-14
BLU-14 WHI/VIO-14
FUNNEL SENSOR
VIO
1
3
TANK HEATER RED-14
2268W
J1-2 C
WHI/VIO
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
WHI/RED
BYPASS SOL
WHI
WHI/GRN
DISPENSE SOL
WHI
REFILL WHI/BLU SOL
WHI
J17-10
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
WHI BLK PNK LEVEL PROBE
GRN
SOL
FUNNEL LOCK
(Optional)
TEMP PROBE
t
J3-1
PNK GRN
J3-5 J3-8 J2-1 J2-5
J2-10
1
CONTROL PANEL ASSY
BREW A
BREW C
HALF
PROG L PROG R
FULL
J2-15
J2-20 J2-22 J16-1
BREW B
ON/OFF
STATIC
SHIELD 22
HALF FULL ON/OFF
J16-5 J4-1
J4-4 J18A-1
USB CBA J18A-5
J18A-8
120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE
SINGLE PHASE
37299.0009A 05/17 ©2017 BUNN-O-MATIC CORPORATION
54
54299 070517
SCHEMATIC WIRING DIAGRAM ICB TWIN
GRN
L1 L2 N
BLK RED WHI
MAIN ON/OFF SWITCH (Late Models only)
BLK-18 BLK-14
LIMIT
MT2
TRIAC MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-1
LEFT
FUNNEL SENSOR
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3 J21-1
WHI/VIO
RIGHT
FUNNEL SENSOR
YEL
1
3
LEFT
BYPASS SOL
WHI
RIGHT
C J21-3
WHI/YEL
O N T
TR1 TAN TR2 TAN
R O
J17-1
WHI/RED ORN
L
WHI/GRN
P
C B
J17-5
O
A
R
D
J17-10
WHI/BLU BLU BLU/BLK
BLK GRY WHI
DISPENSE SOL
WHI
LEFT
DISPENSE SOL
WHI
REFILL SOL
WHI
SOL
RIGHT
FUNNEL LOCK
RIGHT
BYPASS SOL
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
LEFT
FUNNEL LOCK
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK GRN
J3-5 J3-8 J2-1
J2-5
CONTROL PANEL ASSY 1
J2-10
J2-15
J2-20 J2-22 J18A-1
USB CBA J18A-5
J18A-8
120/208 OR 120/240 VOLTS AC
3 WIRE + GND SINGLE PHASE
22
STATIC SHIELD
LEFT ON/OFF
LEFT FULL
LEFT HALF
RIGHT ON/OFF
RIGHT FULL
RIGHT HALF
37299.0011A 06/17 ©2017 BUNN-O-MATIC CORPORATION
55
RIGHT FULL
RIGHT BREW
C
RIGHT BREW
B
PROG “Control”
RIGHT HALF
RIGHT ON/OFF
RIGHT PROG
RIGHT BREW
A
PROG “Digital”
LEFT BREW
C
LEFT ON/OFF
LEFT FULL
PROG “Brewer”
LEFT PROG
LEFT BREW
B
LEFT BREW
A
LEFT HALF
54299 070517
SCHEMATIC WIRING DIAGRAM ICBA,ICBB & CE w/TRIACS
GRN/YEL
L1 N
BRN
MAIN ON/OFF SWITCH
GRN/YEL
BRN
FUNNEL SENSOR
J1-1
VIO
1
3
J1-2 C
WHI/VIO
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
J17-10
WHI/BLU
BLK RED
J17-14 J15-1
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
J15-5
YEL
12VAC
J13-1
WHI BLK
J3-1
PNK GRN
Chassis Ground Chassis Ground
EMI FILTER
LIMIT
THERMAL
TRIAC
THERMOSTAT
FUSE
BLU-14
BLK-14
TANK HEATER
BLK-18 BLK-14
THERMAL FUSE
RED RED-14
WHI/RED
BYPASS SOL
RED
WHI/GRN
DISPENSE SOL
RED
REFILL WHI/BLU SOL
RED
RED
SOL
FUNNEL LOCK
(Optional)
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-5 J3-8 J2-1 J2-5
J2-10
1
CONTROL PANEL ASSY
BREW A
BREW C
HALF
PROG L PROG R
FULL
J2-15
J2-20 J2-22 J16-1
BREW B
ON/OFF
STATIC SHIELD
HALF FULL ON/OFF
J16-5 J4-1
J4-4 J18A-1
USB CBA J18A-5
J18A-8
200-240V AC 2 WIRE SINGLE PHASE
37299.0010A 05/17 ©2017 BUNN-O-MATIC CORPORATION
56
BLU BLU
54299 070517
SCHEMATIC WIRING DIAGRAM ITCB HV TWIN GRN
L1 L2 N
BLK RED WHI
MAIN ON/OFF SWITCH
J20-1
LEFT
FUNNEL SENSOR
VIO
1
3
J20-3 J21-1
WHI/VIO
RIGHT
FUNNEL SENSOR
YEL
1
3
C J21-3
WHI/YEL
O N T
TR1 TAN TR2 TAN
R O
J17-1
WHI/RED ORN
L
WHI/GRN
P
C B
J17-5
O
A
R
D
J17-10
WHI/BLU BLU BLU/BLK
BLK GRY WHI
LIMIT
MT2
TRIAC MT1
THERMOSTAT
BLU-14
BLU-14
BLK-18 BLK-14
TANK HEATER RED-14
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
RIGHT DISPENSE SOL
LEFT BYPASS SOL
LEFT DISPENSE SOL
SOL
RIGHT
FUNNEL LOCK
REFILL SOL
RIGHT BYPASS SOL
J17-14 J15-1
J15-5 J13-1 J3-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
PNK GRN
J3-5
J3-8 J10-1 J10-3
J2-1
WHI/VIO WHI/YEL
SOL
LEFT
FUNNEL LOCK
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
WHI/YEL
WHI/VIO
RIGHT DILUTION SOL
LEFT DILUTION SOL
CONTROL PANEL ASSY 1
J2-5
J2-10
WHI WHI WHI WHI
WHI WHI
WHI WHI
RIGHT FULL
RIGHT BREW
C
RIGHT BREW
B
PROG “Control”
RIGHT HALF
RIGHT ON/OFF
RIGHT PROG
RIGHT BREW
A
J2-15
J2-20 J2-22 J18A-1
USB CBA J18A-5
J18A-8
120/208 OR 120/240 VOLTS AC
3 WIRE + GND SINGLE PHASE
22
STATIC SHIELD
LEFT ON/OFF
LEFT FULL
LEFT HALF
RIGHT ON/OFF
RIGHT FULL
RIGHT HALF
37299.0012A 06/17 ©2017 BUNN-O-MATIC CORPORATION
57
PROG “Digital”
LEFT BREW
C
LEFT ON/OFF
LEFT FULL
PROG “Brewer”
LEFT PROG
LEFT BREW
B
LEFT BREW
A
LEFT HALF
54299 070517
SCHEMATIC WIRING DIAGRAM ITB
L1 N GRN
BLK WHI
TRIAC
LIMIT THERMOSTAT
BLU-14
BLK-16
TANK HEATER
WHI-16
BLK
1680W
BLK-18 BLK-14
C
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/VIO
SOL DILUTION (MAIN or LEFT)
WHI
L
WHI/GRN
P
SOL DISPENSE
WHI
C B
J17-5
WHI/BLU
SOL REFILL
WHI
O
A
R D
J17-10
BLK WHI/YEL WHI
SOL RIGHT DILUTION (DUAL DILUTION MODELS ONLY)
WHI WHI
J17-14 J15-1
J15-5 J3-1
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
WHI BLK PNK LEVEL PROBE
GRN
BRN/BLK BRN/WHI
FUNNEL
SOL
LOCK
TEMP PROBE
t
J2-1
J2-5 J2-8 J2-1
PNK GRN
4 12
1. JUMPER FOR SWEETENER MODELS ONLY 2. JUMPER FOR DUAL DILUTION MODELS ONLY 3 3. JUMPER FOR DUAL DILUTION MODELS w/SWEETENER ONLY 4. JUMPER 4 & 2 FOR ITB MODELS ONLY
1
CONTROL PANEL ASSY
J2-5 J2-10
BREW A
BREW C
HALF
PROG L PROG R
FULL
J2-15
BREW B
J2-20 J2-22 J1-1
J1-5 J10-1 J10-3 J18A-1
J18A-5
22 ORN WHI/ORN
STATIC SHIELD
WHI/RED
USB CBA
J18A-8
ON/OFF
HALF FULL ON/OFF
OPTIONAL LOW PRODUCT DETECT SWITCH
SOL OPTIONAL SWEETENER
WHI
120V AC 2 WIRE SINGLE PHASE
48835.0003A 05/17 ©2017 BUNN-O-MATIC CORPORATION
58
54299 070517
GRN/YEL
SCHEMATIC WIRING DIAGRAM ITCB-DV HV
L1 L2 N
BLK RED WHI
Earth Ground Chassis Ground MAIN ON/OFF SWITCH
BLK-18 BLK-14
BLK J1-1
TRIAC
LIMIT THERMOSTAT
BLU-14
BLK-14
TANK HEATER 1680W
SELECTOR SWITCH WHI-14
BLU-14 WHI/VIO-14
FUNNEL SENSOR
VIO
1
3
TANK HEATER RED-14
2268W
J1-2 C
WHI/VIO
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
BYPASS
WHI/RED SOL
WHI
WHI/GRN
DISPENSE SOL
WHI REFILL
WHI/BLU SOL
WHI
J17-10
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
WHI BLK PNK LEVEL PROBE
GRN
BRN/BLK BRN/WHI
SOL
FUNNEL LOCK
TEMP PROBE
t
J3-1
PNK GRN
J3-5 J3-8 J2-1 J2-5
J2-10
1 CONTROL PANEL ASSY
BREW A
BREW C
HALF
PROG L PROG R
FULL
J2-15
J2-20 J2-22 J10-1 J10-3 J18A-1
WHI/VIO
J18A-5 J18A-8
BREW B
STATIC SHIELD
USB CBA
ON/OFF
HALF FULL ON/OFF
DILUTION
WHI/VIO SOL
WHI
120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE
SINGLE PHASE
43828.0004A 06/17 ©2017 BUNN-O-MATIC CORPORATION
59
54299 070517
GRN/YEL
L1 L2
SCHEMATIC WIRING DIAGRAM ITCBA HV
BLU
BRN
Earth Ground Chassis Ground MAIN ON/OFF SWITCH
GRN/YEL
BLU
BRN
Chassis Ground
EMI FILTER
BLK-18 BLK-14
BLK
J1-1
J1-2
C
O N
TR1
T
TR2
R O
J17-1
L
P
C B
J17-5
O
A
R
D
J17-10
TRIAC
LIMIT THERMOSTAT
BLU-14
BLK-14
VIO WHI/VIO TAN
WHI/RED WHI/GRN WHI/BLU
FUNNEL SENSOR
1
3
WHI/GRN
BLK RED
THERMAL
THERMAL
FUSE TANK HEATER FUSE
WHI/RED
DISPENSE SOL
BYPASS SOL
WHI/BLU
REFILL SOL
RED-14
RED RED RED
RED
J17-14 J15-1
J15-5 J13-1
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
WHI BLK PNK LEVEL PROBE
GRN
BRN/BLK BRN/WHI
TEMP PROBE
t
FUNNEL
SOL
LOCK
J3-1
PNK GRN
J3-5 J3-8 J2-1 J2-5
J2-10
1
CONTROL PANEL ASSY
BREW A
BREW C
HALF
PROG L PROG R
FULL
J2-15
J2-20 J2-22 J10-1 J10-3 J18A-1
WHI/VIO
J18A-5 J18A-8
BREW B
STATIC SHIELD
USB CBA
ON/OFF
HALF FULL ON/OFF
DILUTION
WHI/VIO SOL
RED
200-240V AC 2 WIRE SINGLE PHASE
43828.0006A 03/20 ©2020 BUNN-O-MATIC CORPORATION
60
GRN/YEL
L1 N
RED
BLK BLK
SCHEMATIC WIRING DIAGRAM ITBA-DUAL DILUTION/SWEETENER
EMI FILTER
RED
Chassis Ground
BLK-18 BLK-14
TRIAC
LIMIT THERMOSTAT
BLU-14
BLK-16
TANK HEATER
RED-16
BLK
C
TR1 TAN
O N T
TR2
J17-1
WHI/VIO
R O
WHI/GRN
L
P J17-5
WHI/BLU
C
B
O
A
R D
J17-10
BLK WHI/YEL RED
SOL LEFT DILUTION
SOL DISPENSE
SOL RIGHT DILUTION
J17-14 J15-1
J15-5 J3-1 J3-1
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
PNK GRN
BRN/BLK BRN/WHI
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
RED
RED
SOL REFILL
RED
RED RED
FUNNEL
SOL
LOCK
J3-5 J3-8 J2-1 J2-5
J2-10
1
CONTROL PANEL ASSY
BREW A
BREW C
HALF
PROG L PROG R
FULL
J2-15
J2-20 J2-22
STATIC
SHIELD 22
J1-1
J1-5 J10-1 J10-3
ORN VIO WHI/ORN WHI/VIO
BLU/BLK
WHI/RED
J18A-1
USB CBA J18A-5
J18A-8
BREW B
ON/OFF
HALF FULL ON/OFF
NC LEFT LOW PRODUCT DETECT SWITCH
NO
SOL RIGHT SWEETENER SOL LEFT SWEETENER
NC RIGHT LOW PRODUCT DETECT SWITCH
NO
RED RED
220-240V AC 60HZ 2 WIRE
SINGLE PHASE
48835.0004A 06/17 ©2017 BUNN-O-MATIC CORPORATION
61
54299 070517
BLK RED WHI BLK RED
SCHEMATIC WIRING DIAGRAM ICB SH
L1 L2 N GRN
MAIN ON/OFF SWITCH
BLK-18 BLK-14
J20-1
FUNNEL SENSOR
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3
WHI/VIO
J21-1
BYPASS
SOL
WHI
C J21-3
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
WHI
DISPENSE
SOL
WHI
REFILL SOL
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
FUNNEL LOCK
(Optional)
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK GRN
J3-5 J3-8 J2-1 J2-5
J2-10
J2-15
J2-20 J2-22 J16-1
1
CONTROL PANEL ASSY
SMALL
BREW A
BREW C
MED
PROG L PROG R LARGE
BREW B
ON/OFF
STATIC SHIELD
SMALL MED LARGE
ON/OFF
J16-5
J4-1
WHT BLK
GRN
J4-4
S H
J3-1
BLK
C
O
M
M U
J3-5
BLK
N
I
C
BLK
A T I J3-10
WHT GRN
O
N
BRN
B
O
A R J3-16
RED
D
4 AMP
+POWER SUPPLY
BLK RED
– 24vdc + SERVER
120/208 OR 120/240 VOLTS AC
3 WIRE + GND SINGLE PHASE
53494.0000A 02/17 ©2017 BUNN-O-MATIC CORPORATION
62
BLK BLK RED
BLK BLK RED
SCHEMATIC WIRING DIAGRAM ICBA SH
L1 L2
BLU
BRN
GRN/YEL
GRN/YEL
BRN
BLU
MAIN ON/OFF SWITCH
J20-1 J20-3
FUNNEL SENSOR
VIO
1
3
WHI/VIO
J21-1
C J21-3
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
RED
Chassis Ground Chassis Ground
EMI FILTER
BLK-18 BLK-14
LIMIT
THERMAL
THERMAL
TRIAC
THERMOSTAT
BLU-14
BLU
FUSE TANK HEATER FUSE
RED
MT2
MT1
-14
-14
GATE
BYPASS
SOL
RED
DISPENSE
SOL
RED
REFILL SOL
RED
RED
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
FUNNEL LOCK
(Optional)
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK GRN
J3-5 J3-8 J2-1 J2-5
J2-10
J2-15
J2-20 J2-22 J16-1
1
CONTROL PANEL ASSY
SMALL
BREW A
BREW C
MED
PROG L PROG R LARGE
BREW B
ON/OFF
STATIC SHIELD
SMALL MED LARGE
ON/OFF
J16-5
J4-1
WHT BLK
GRN
J4-4
S H
J3-1
BLK
C
O
M
M U
J3-5
BLK
N
I
C
BLK
A T I J3-10
WHT GRN
O
N
BRN
B
O
A R J3-16
RED
D
+POWER SUPPLY
BLK RED
– 24vdc + SERVER
200-240 VOLTS AC 2 WIRE + GND SINGLE PHASE
53494.0001B 02/18 ©2017 BUNN-O-MATIC CORPORATION
63
BLK RED
54299 102821
BLK WHT BLK
SCHEMATIC WIRING DIAGRAM ICB SH DV
L1 L2 N
GRN
WHI
RED
BLK
MAIN ON/OFF SWITCH
RED
BLK-18 BLK-14
J20-1 J20-3
FUNNEL SENSOR
VIO
1
3
WHI/VIO
BLK-14
TANK HEATER 1800W
SELECTOR SWITCH WHI-14
BLU-14 WHI/VIO-14
TANK HEATER 2268W
WHI RED-14
J21-1
C J21-3
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
WHI
TRIAC
MT2
MT1
BLK-14
LIMIT
THERMOSTAT BLK-14
GATE
BYPASS
SOL
WHI
DISPENSE
SOL
WHI
REFILL SOL
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
FUNNEL LOCK
(Optional)
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK GRN
WHT
J3-5 J3-8 J2-1 J2-5
J2-10
J2-15
J2-20 J2-22 J16-1
1
CONTROL PANEL ASSY
SMALL
BREW A
BREW C
MED
PROG L PROG R LARGE
BREW B
ON/OFF
STATIC SHIELD
SMALL MED LARGE
ON/OFF
J16-5
J4-1
WHT BLK
GRN
J4-4
S H
J3-1
BLK
C
O
M
M U
J3-5
BLK
N
I
C
BLK
A T I J3-10
WHT GRN
O
N
BRN
B
O
A R J3-16
RED
D
4 AMP
– 24vdc + SERVER
+POWER SUPPLY
BLK WHT
120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE
SINGLE PHASE
53494.0003A 03/18 ©2018 BUNN-O-MATIC CORPORATION
64
BLK
54299 102821
PLATINUM EDITION (220-240VAC)
GRN/YEL
L1 N
BRN
SCHEMATIC WIRING DIAGRAM ICBA PE CE
MAIN ON/OFF SWITCH
GRN/YEL
BRN
FUNNEL SENSOR
J1-1
VIO
1
3
J1-2 C
WHI/VIO
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
RED
J17-14 J15-1
BRN/BLK BRN/WHI
BLK WHI
FUSE
YEL
J15-5
YEL
J13-1
WHI BLK
J3-1
PNK GRN
J3-5
Chassis Ground Chassis Ground
EMI FILTER
LIMIT
THERMAL
TRIAC
THERMOSTAT
FUSE
BLU-14
BLK-14
TANK HEATER
BLK-18 BLK-14
THERMAL FUSE
RED RED-14
WHI/RED
BYPASS SOL
RED
WHI/GRN
DISPENSE SOL
RED
REFILL WHI/BLU SOL
RED
SOL
FUNNEL LOCK
(Optional)
FUSE
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
RED
TRANSFORMER 10VA PRIMARY 12VAC
J3-8
J5-1
ORN/WHI ORN
J5-4
AIR PUMP SOL
J4-1
WHT BLK
RED
J4-4
GRN
D I
J10-1
S
P
L J10-4
RED BLK WHT
GRN
A
Y
B
O A
USB
R
D
J9-1
J9-4
USB PORT
220-240V AC 2 WIRE SINGLE PHASE CE
37299.0014A 04/19 ©2019 BUNN-O-MATIC CORPORATION
65
BLU BLU
54299 1012821
PLATINUM EDITION (120V/208-240V)
SCHEMATIC WIRING DIAGRAM ICB-DV PE
GRN
L1 L2 N
BLK RED WHI
MAIN ON/OFF SWITCH (Late Models only)
BLK-18 BLK-14
BLK J1-1
TRIAC VIO
LIMIT THERMOSTAT
BLU-14
BLK-14
FUNNEL SENSOR
1
3
TANK HEATER 1680W
SELECTOR SWITCH WHI-14
BLU-14 WHI/VIO-14
TANK HEATER RED-14
2268W
J1-2 C
WHI/VIO
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
WHI/BLU
O
A
R D
BLK
WHI/RED SOL BYPASS
WHI
WHI/GRN
DISPENSE SOL
WHI
REFILL WHI/BLU SOL
WHI
J17-10
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
WHI BLK PNK LEVEL PROBE
GRN
SOL
FUNNEL LOCK
(Optional)
TEMP PROBE
t
J3-1
PNK GRN
J3-5
J3-8
J5-1
ORN/WHI
ORN
J5-4
AIR PUMP SOL
J4-1
WHT
BLK
RED
J4-4
GRN
D I
J10-1
S
P
L J10-4
A
Y
B
O A USB
R
D
J9-1
RED BLK WHT
GRN
J9-4
USB PORT
120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE
SINGLE PHASE
37299.0015A 08/18 ©2018 BUNN-O-MATIC CORPORATION
66
54299 1012821
BLK WHT BLK
PLATINUM EDITION (120V/208-240V)
SCHEMATIC WIRING DIAGRAM ICB SH PE
L1 L2 N
GRN
MAIN ON/OFF SWITCH
BLK-18 BLK-14
WHT
J20-1
FUNNEL SENSOR
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3
WHI/VIO
J21-1
BYPASS
SOL
WHT
C J21-3
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
WHI
DISPENSE
SOL
WHT
REFILL SOL
WHT
WHT
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
FUNNEL LOCK
(Optional)
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK GRN
J3-5
J3-8 J5-1 J5-4
ORN/WHI ORN
AIR PUMP SOL
J4-1
WHT
BLK
RED
J4-4
GRN
D I
J10-1
S
P
L J10-4
A
Y
B
O A
USB
R
D
J9-1
J9-4
RED BLK WHT GRN
WHT BLK GRN
USB PORT
S H
J3-1
BLK
C
VIO
O
M
M U
J3-5
BLK
N
I
C
BLK
A T I J3-10
WHT GRN
O
VIO
N
B
RED
O
A
R
D J3-16
RED
4 AMP
+-
POWER SUPPLY NL
BLK WHT
– 24vdc + SERVER
120/208 OR 120/240 VOLTS AC
3 WIRE + GND SINGLE PHASE
53494.0002B 11/18 ©2018 BUNN-O-MATIC CORPORATION
67
BLK RED WHI BLK
54299 102821
PLATINUM EDITION (120V/208-240V)
SCHEMATIC WIRING DIAGRAM ICB TF PE
L1 L2 N
GRN
BLK RED WHI
MAIN ON/OFF SWITCH
BLK-18 BLK-14
J20-1
FUNNEL SENSOR
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3
WHI/VIO
J21-1
BYPASS
SOL
WHI
C J21-3
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
WHI
DISPENSE
SOL
WHI
REFILL SOL
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
FUNNEL LOCK
(Optional)
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK GRN
J3-5 J3-8 J5-1 J5-4
1 2 3
ORN/WHI ORN
1. JUMPERS 1 & 2 ARE USED ON 1 GALLON MODELS 2. JUMPER 3 IS USED ON 1.5
GALLON MODELS
AIR PUMP SOL
J4-1
WHT
BLK
RED
J4-4
GRN
D I
J10-1
S
P
L J10-4
RED BLK WHT
GRN
A
Y
B
O A
USB
R
D
J9-1
J9-4
USB PORT
120/208 OR 120/240 VOLTS AC
3 WIRE + GND SINGLE PHASE
55021.0000A 01/18 ©2018 BUNN-O-MATIC CORPORATION
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BLK BLK RED
PLATINUM EDITION (200VAC)
SCHEMATIC WIRING DIAGRAM ICB SH 200V
GRN/YEL GRN/YEL
BRN
BRN
BLU
BLU
L1 N
MAIN ON/OFF SWITCH
J20-1 J20-3
FUNNEL SENSOR
VIO
1
3
WHI/VIO
J21-1
C J21-3
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
RED
Chassis Ground Chassis Ground
EMI FILTER
BLK-18 BLK-14
LIMIT
TRIAC
THERMOSTAT
BLU-14
BLU
TANK HEATER
RED
MT2
MT1
-14
-14
GATE
BYPASS
SOL
RED
DISPENSE
SOL
RED
REFILL SOL
RED
RED
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
FUNNEL LOCK
(Optional)
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK GRN
J3-5 J3-8 J2-1 J2-5
J2-10
J2-15
J2-20 J2-22 J16-1
1
CONTROL PANEL ASSY
SMALL
BREW A
BREW C
MED
PROG L PROG R LARGE
BREW B
ON/OFF
STATIC SHIELD
SMALL MED LARGE ON/OFF
J16-5 J4-1
J4-4
S
H
J3-1
C
O
M
M U
J3-5
N
I
C
A
T
I J3-10
O
N
B O A R D J3-16
WHT BLK GRN
BLK VIO
BLK
BLK WHT GRN VIO RED
RED
+POWER SUPPLY
BLK RED
– 24vdc + SERVER
200 VOLTS AC 2 WIRE + GROUND
SINGLE PHASE
53494.0005 A 3/21 © 2017 BUNN-O-MATIC CORPORATION
69
BLK RED
54299 102821
BLU BLU
PLATINUM EDITION (200VAC)
GRN/YEL
L1 N
BRN
SCHEMATIC WIRING DIAGRAM ICB TF PE
Chassis Ground
MAIN ON/OFF SWITCH
GRN/YEL
BRN
Chassis Ground
EMI FILTER
BLK-18 BLK-14
FUNNEL SENSOR
J20-1
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3
WHI/VIO
J21-1
BYPASS
SOL
RED
C J21-3
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/RED
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
RED
DISPENSE
SOL
RED
REFILL SOL
RED
RED
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
FUNNEL LOCK
(Optional)
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK GRN
J3-5 J3-8 J5-1 J5-4
1 2 3
ORN/WHI ORN
1. JUMPERS 1 & 2 ARE USED ON 1 GALLON MODELS 2. JUMPER 3 IS USED ON 1.5
GALLON MODELS
AIR PUMP SOL
J4-1
WHT BLK
RED
J4-4
GRN
D I
J10-1
S
P
L J10-4
RED BLK WHT
GRN
A
Y
B
O A
USB
R
D
J9-1
J9-4
USB PORT
200 VOLTS AC 2 WIRE + GND SINGLE PHASE
55021.0001 A 3/21 © 2018 BUNN-O-MATIC CORPORATION
70
54299 102821
PLATINUM EDITION (120V/208-240V)
SCHEMATIC WIRING DIAGRAM ICB TWIN & ICB TWIN TF PE
BLK RED WHI
L1 L2 N GRN
MAIN ON/OFF SWITCH
LIMIT
MT2
TRIAC MT1
THERMOSTAT
BLU-14
BLU-14
BLK-18 BLK-14
TANK HEATER RED-14
J20-1
LEFT
FUNNEL SENSOR
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3 J21-1
WHI/VIO
RIGHT
FUNNEL SENSOR
YEL
1
3
LEFT
BYPASS SOL
WHI
RIGHT
C J21-3
WHI/YEL
O N T
TR1 TAN TR2 TAN
R O
J17-1
WHI/RED ORN
L
WHI/GRN
P
C B
J17-5
O
A
R
D
J17-10
WHI/BLU BLU BLU/BLK
BLK GRY WHI
DISPENSE SOL
WHI
LEFT
DISPENSE SOL
WHI
REFILL SOL
WHI
SOL
RIGHT
FUNNEL LOCK
(Optional)
RIGHT
BYPASS SOL
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
LEFT
FUNNEL LOCK
(Optional)
WHI BLK
PNK LEVEL PROBE
TEMP PROBE
GRN
t
J3-1
PNK GRN
J3-5 J3-8 J5-1 J5-4 J4-1 J4-4
1 2 3
ORN/WHI ORN BLU/WHI BLU
WHT BLK RED GRN
1. JUMPER 2 IS USED ON 1 GALLON MODELS 2. JUMPERS 1 & 3 ARE USED ON TWIN 1.5 GALLON MODELS
LEFT
AIR PUMP SOL
RIGHT
AIR PUMP
SOL
D I
J10-1
S
P
L J10-4
A
Y
B O A USB R D
RED BLK WHT
GRN
J9-1 J9-4
USB PORT
120/208 OR 120/240 VOLTS AC
3 WIRE + GND SINGLE PHASE
54850.0000A 01/18 ©2018 BUNN-O-MATIC CORPORATION
71
54299 102821
BLK BLK RED
PLATINUM EDITION (120V/208-240V)
SCHEMATIC WIRING DIAGRAM ICB TWIN SH PE
L1 L2 N
GRN
MAIN ON/OFF SWITCH
LIMIT
MT2
TRIAC MT1
THERMOSTAT
BLU-14
BLU-14
BLK-18 BLK-14
TANK HEATER RED-14
J20-1
LEFT
FUNNEL SENSOR
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3 J21-1
WHI/VIO
RIGHT
FUNNEL SENSOR
YEL
1
3
LEFT
BYPASS SOL
WHI
RIGHT
C J21-3
WHI/YEL
O N T
TR1 TAN TR2 TAN
R O
J17-1
WHI/RED ORN
L
WHI/GRN
P
C B
J17-5
O
A
R
D
J17-10
WHI/BLU BLU BLU/BLK
BLK GRY WHI
DISPENSE SOL
WHI
LEFT
DISPENSE SOL
WHI
REFILL SOL
WHI
SOL
RIGHT
FUNNEL LOCK (Optional)
RIGHT BYPASS SOL
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
LEFT
FUNNEL LOCK
(Optional)
WHI
BLK
PNK
TEMP
LEVEL PROBE
PROBE
GRN
t
J3-1
PNK GRN
J3-5
J3-8 J5-1 J5-4 J4-1 J4-4
ORN/WHI ORN BLU/WHI BLU
WHT BLK RED GRN
LEFT
AIR PUMP SOL
RIGHT
AIR PUMP
SOL
D I
J10-1
S
P
L J10-4
RED BLK WHT
GRN
A
Y
B
O A
USB
R
D
J9-1
WHT BLK
GRN
J9-4
USB PORT
S H
J3-1
BLK
C
O
M
M U N
J3-5
BLK BLK
I
C
BLK
A T I J3-10
WHT GRN
O
N
B
BRN
O A
RED
R
D J3-16
RED
4 AMP
4 AMP
+POWER SUPPLY
BLK RED
– 24vdc
LEFT SIDE + SERVER
– 24vdc RIGHT SIDE
+ SERVER
120/208 OR 120/240 VOLTS AC
3 WIRE + GND SINGLE PHASE
53328.0001B 11/18 ©2018 BUNN-O-MATIC CORPORATION
72
BLK RED WHI BLK RED
54299 102821
BLK BLK RED
PLATINUM EDITION (200VAC)
GRN/YEL
L1 N
BLU BLU
BRN
SCHEMATIC WIRING DIAGRAM ICB TWIN SH PE 200V
MAIN ON/OFF SWITCH
GRN/YEL
BRN
Chassis Ground
Chassis Ground
EMI FILTER
LIMIT
MT2
TRIAC MT1
THERMOSTAT
BLU-14
BLU-14
BLK-18 BLK-14
TANK HEATER RED-14
J20-1
LEFT
FUNNEL SENSOR
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3 J21-1
WHI/VIO
RIGHT
FUNNEL SENSOR
YEL
1
3
LEFT
BYPASS SOL
RED
RIGHT
C J21-3
WHI/YEL
O N T
TR1 TAN TR2 TAN
R O
J17-1
WHI/RED ORN
L
WHI/GRN
P
C B
J17-5
O
A
R
D
J17-10
WHI/BLU BLU BLU/BLK
BLK GRY RED
DISPENSE SOL
RED
LEFT
DISPENSE SOL
RED
REFILL SOL
RED
SOL
RIGHT
FUNNEL LOCK (Optional)
RIGHT BYPASS SOL
RED
RED
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
LEFT
FUNNEL LOCK
(Optional)
WHI
BLK
PNK
TEMP
LEVEL PROBE
PROBE
GRN
t
J3-1
PNK GRN
J3-5
J3-8 J5-1 J5-4 J4-1 J4-4
ORN/WHI ORN BLU/WHI BLU
WHT BLK RED GRN
LEFT
AIR PUMP SOL
RIGHT
AIR PUMP
SOL
D I
J10-1
S
P
L J10-4
RED BLK WHT
GRN
A
Y
B
O A
USB
R
D
J9-1
WHT BLK
GRN
J9-4
USB PORT
S H
J3-1
BLK
C
O
M
M U N
J3-5
BLK
BLK
I
C
BLK
A T I J3-10
WHT GRN
O
N
B
BRN
O A
RED
R
D J3-16
RED
4 AMP
4 AMP
+POWER SUPPLY
BLK RED
– 24vdc LEFT SIDE
+ SERVER
– 24vdc RIGHT SIDE
+ SERVER
200 VOLTS AC 2 WIRE + GND SINGLE PHASE
53328.0003 A 03/21 © 2021 BUNN-O-MATIC CORPORATION
73
BLK RED
54299 102821
PLATINUM EDITION (200VAC)
GRN/YEL
L1 N
BLU BLU
BRN
SCHEMATIC WIRING DIAGRAM ICB TWIN & ICB TWIN TF PE
MAIN ON/OFF SWITCH
GRN/YEL
BRN
Chassis Ground
Chassis Ground
EMI FILTER
LIMIT
MT2
TRIAC MT1
THERMOSTAT
BLU-14
BLU-14
BLK-18 BLK-14
TANK HEATER RED-14
LEFT
FUNNEL SENSOR
J20-1
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3 J21-1
WHI/VIO
RIGHT
FUNNEL SENSOR
YEL
1
3
LEFT
BYPASS SOL
RED
RIGHT
C J21-3
WHI/YEL
O N T
TR1 TAN TR2 TAN
R O
J17-1
WHI/RED ORN
L
WHI/GRN
P
C B
J17-5
O
A
R
D
J17-10
WHI/BLU BLU BLU/BLK
BLK GRY RED
DISPENSE SOL
RED
LEFT
DISPENSE SOL
RED
REFILL SOL
RED
SOL
RIGHT
FUNNEL LOCK (Optional)
RIGHT BYPASS SOL
RED
RED
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
LEFT
FUNNEL LOCK
(Optional)
WHI
BLK
PNK
TEMP
LEVEL PROBE
PROBE
GRN
t
J3-1
PNK GRN
J3-5 J3-8 J5-1 J5-4 J4-1 J4-4
1 2 3
ORN/WHI ORN BLU/WHI BLU
WHT BLK RED GRN
1. JUMPER 2 IS USED ON 1 GALLON MODELS 2. JUMPERS 1 & 3 ARE USED ON TWIN 1.5 GALLON MODELS
LEFT
AIR PUMP MOT
RIGHT
AIR PUMP
MOT
D I
J10-1
S
P
L J10-4
RED BLK WHT
GRN
A
Y
B
O A
USB
R
D
J9-1 J9-4
USB PORT
200 VOLTS AC 2 WIRE + GND SINGLE PHASE
54850.0002 A 3/21 © 2018 BUNN-O-MATIC CORPORATION
74
54299 102821
PLATINUM EDITION (120V/208-240V)
BLK RED WHI
L1 L2 N
SCHEMATIC WIRING DIAGRAM ITCB-DV PE GRN
MAIN ON/OFF SWITCH
BLK-18 BLK-14
BLK J1-1
TRIAC VIO
LIMIT THERMOSTAT
BLU-14
BLK-14
TANK HEATER 1680W
SELECTOR SWITCH WHI-14
BLU-14 WHI/VIO-14
(1425W ITCB-C-DV ONLY)
FUNNEL SENSOR
1
3
TANK HEATER RED-14
1800W
J1-2 C
WHI/VIO
O N
TR1 TAN
T
TR2
R O
J17-1
WHI/VIO
L
WHI/GRN
P
C B
J17-5
O
A
R
D
WHI/BLU BLK
J17-10
WHI
WHI/VIO
DILUTION SOL
WHI
WHI/GRN
DISPENSE SOL
WHI
REFILL WHI/BLU SOL
WHI
WHI
J17-14 J15-1
J15-5
BRN/BLK BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK PNK LEVEL PROBE
GRN
BRN/BLK BRN/WHI
FUNNEL
SOL
LOCK
TEMP PROBE
J13-1
WHI BLK
t
J3-1
PNK GRN
VIO
J3-5
VIO
J3-8
J5-1
ORN/WHI ORN
J5-4
J4-1
WHT
BLK
RED
J4-4
GRN
AIR PUMP SOL
D I
J10-1
S
P
L J10-4
RED BLK WHT
GRN
A
Y
B
O A
USB
R
D
J9-1
J9-4
USB PORT
120V AC 2 WIRE 120/208V AC 3 WIRE 120/240V AC 3 WIRE
SINGLE PHASE
53869.0002A 07/18 ©2018 BUNN-O-MATIC CORPORATION
75
54299 102821
PLATINUM EDITION (120V/208-240V)
SCHEMATIC WIRING DIAGRAM ITCB HV TWIN PE
GRN
L1 L2 N
BLK RED WHI
MAIN ON/OFF SWITCH
LIMIT
MT2
TRIAC MT1
THERMOSTAT
BLU-14
BLU-14
BLK-18 BLK-14
TANK HEATER RED-14
J20-1
LEFT
FUNNEL SENSOR
VIO
1
3
TRIAC MT2
LIMIT
MT1
THERMOSTAT
BLU-14
BLU-14
TANK HEATER
RED-14
J20-3 J21-1
WHI/VIO
RIGHT
FUNNEL SENSOR
YEL
1
3
LEFT
BYPASS
WHI
SOL
RIGHT
C J21-3
WHI/YEL
O N T
TR1 TAN TR2 TAN
R O
J17-1
WHI/RED ORN
L
WHI/GRN
P
C B
J17-5
O
A
R
D
J17-10
WHI/BLU BLU BLU/BLK
BLK GRY WHI
DISPENSE
WHI
SOL
LEFT
DISPENSE SOL
WHI
REFILL
WHI
SOL
SOL
RIGHT
FUNNEL LOCK
RIGHT
BYPASS SOL
WHI
WHI
J17-14 J15-1
J15-5 J13-1
BRN/BLK
BRN/WHI
TRANSFORMER 10VA
BLK
WHI
PRIMARY
YEL
YEL
12VAC
WHI BLK
SOL
LEFT
FUNNEL LOCK
WHI BLK PNK LEVEL PROBE
GRN
TEMP PROBE
t
J3-1
PNK
GRN
J3-5
RIGHT
WHI/VIO
DILUTION
WHI
SOL
LEFT
WHI/YEL
DILUTION
WHI
SOL
J3-8
J10-1
WHI/VIO
J10-3
WHI/YEL
J5-1
ORN/WHI
ORN
BLU/WHI
J5-4 BLU
LEFT AIR PUMP SOL
RIGHT AIR PUMP SOL
J4-1
WHT
BLK
RED
GRN J4-4
D I
J10-1
RED BLK
S P L J10-4
WHT GRN
A
Y
B
O A
USB
R
D
J9-1
J9-4
USB PORT
120/208 OR 120/240 VOLTS AC
3 WIRE + GND SINGLE PHASE
37299.0013A 07/18 ©2018 BUNN-O-MATIC CORPORATION
76
54299 102821