Bunn Coffee Machine CWTF APS

Warning: Ensure the coffee machine is unplugged before starting the procedure

Remove the pink and tan wires from the switch

Compress the clips inside the hood and gently push the switch through the opening

Push new switch into the opening and spread the clips to hold the switch in the hood

Sign off on the switch replacement

Warning: Disconnect the brewer from the power source before starting the test

Locate the blue wire on the control thermostat

Voltage across the blue wire on the control thermostat

Voltage is 120 volts ac for two wire 120 volt models and three wire 120/240 volt models or 200 to 230 volts ac for two wire 200 volt or 230 volt models

If voltage is not as described, refer to the wiring diagrams and check the brewer wiring harness

Locate the black wire on the control thermostat

Remove the capillary bulb and grommet from the tank

Voltage across the black wire of the control thermostat when the control thermostat is turned fully clockwise

Voltage is 120 volts ac for two wire 120 volt models and three wire 120/240 volt models or 200 to 230 volts ac for two wire 200 volt or 230 volt models

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 selector switch 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 checked

If voltage is not present as described, check wiring harness

Black wire and the white or red wire disconnected from the tank heater terminals

Continuity across the tank heater terminals checked

Continuity present as described

If continuity is not present as described, replace the tank heater

Warning: Disconnect the machine from power source before starting the procedure

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

Enter the timer dial adjustment

Sign off on the timer replacement