

The Bunn Coffee Machine CWTF-TC is a high-performance commercial brewing system designed for efficiency and reliability. This model offers advanced features for optimal brewing, making it ideal for cafes and restaurants seeking quality coffee solutions. Regular maintenance ensures longevity and consistent performance.
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Tensioning Guide
Belt-diagram
C-120 pulleys
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Pre-built workflows to keep your asset running smoothly.
Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Drive Motor
B2 Rollers
Tensioning System
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Bunn Coffee Machine CWTF-TC
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Coffee Machine Tank Heater Switch Test
Disconnect the brewer from the power source
Disconnect the black wire from the limit thermostat
Check the voltage between the black wire removed from the limit thermostat and the white wire or red wire on the tank heater with a voltmeter
Disconnect the brewer from the power source
Check the brewer wiring harness if voltage is not present as described
Check for continuity between the black wire removed from the limit thermostat and the black insert on the terminal block with the tank heater switch in the 'ON' upper position
Continuity should not be present in the 'OFF' lower position
If continuity is present as described, the tank heater switch is operating properly
If continuity is not present as described, replace the tank heater switch
Coffee Machine Switch Test
Warning: Disconnect the brewer from the power source before starting the test
White or red wire removed from the upper terminal and black wire from the center terminal
Voltage across the white or red wire and the black wire
Connect the brewer to the power source
Voltage reading
Disconnect the brewer from the power source
Voltage present as described
If voltage is not present, refer to the Wiring Diagrams and check the brewer wiring harness
Black wire removed, wire removed from the lower terminal
Coffee Machine Tank Heater Test
Warning: Disconnect the brewer from the power supply before starting the test
Voltage across the black and white wires on 120 volt models or the black and red wires for 120/240 volt models, 200 volt models and 230 volt models is as expected
Enter the voltage reading
If voltage is not as expected, check wiring harness
Continuity across the tank heater terminals
If continuity is not as expected, replace the tank heater
Tank heater has cracks in the sheath?
Sign off on the tank heater test
Coffee Machine Dial Timer Replacement
Disconnect the timer socket from the brewer wiring harness and the timer leads from the solenoid valve
Remove the one #8-32 screw securing timer to component bracket
Install new timer on component bracket securing with one #8-32 screw
Upload a photo of the reconnected wires
Readjust the timer dial as required
Sign off on the timer replacement
Coffee Machine Selector SwitchTest
Warning: Disconnect the brewer from the power supply before starting the test
Brewer disconnected from the power supply
Pink and tan wires disconnected from the switch terminals
Continuity present across the two terminals on the switch when it is in the both positions
Continuity present across these terminals only in the full position
If continuity is not present as described, replace the switch
Sign off on the switch test
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Thermostat
29329.1000
Thermostat
29329.1000
Thermostat
29329.1000
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