Bunn Coffee Machine CWTF 20 APS

Remove the wires from the switch terminals

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

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

Sign off on the switch replacement

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

NOTE: Do not remove or install wires while timer board is installed. Pressure applied to one side may cause damage to the board

Disconnect the brewer from the power source and remove the front access panel

Remove the #8-32 screw securing circuit board to the mounting bracket

Remove circuit board and spacers (as required)

Voltage across terminals TL1 and TL2 when the 'ON/OFF' switch is in the 'ON' position

Disconnect the brewer from the power source

Voltage across terminals TL1 and TL4 when the 'ON/OFF' switch is in the 'ON' position

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

Located the blue wire on the control thermostat?

Enter the voltage across the blue wire on the control thermostat

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

Located the black wire on the control thermostat?

Removed the capillary bulb and grommet from the tank?

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

If voltage is not as described, replace the thermostat

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

Brewer disconnected from the power source

Blue and black wires disconnected from the limit thermostat

Continuity across the limit thermostat terminals checked with a ohmmeter

Sign off on the limit thermostat test