Bunn Coffee Machine CWTF 0/6 TWIN

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

Wires removed from the switch terminals

Clips inside the hood compressed and switch pushed through the opening

New switch pushed into the opening and clips spread to hold switch in the hood

Wires reconnected to the new switch

Sign off on the switch replacement

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

Disconnect the polarized, three pin connector from the brewer wiring harness and rotate the brew timer dial fully counterclockwise

Check the voltage across sockets P2 & P3 (white and black wires) of the female connector when the 'ON/OFF' is in the 'ON' position

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

If voltage is not present as described, refer to the Wiring Diagrams and check the brewer wiring harness

Check the voltage across the sockets P1 & P2 (blue and white wires) of the female connector when the 'ON/OFF' switch is in the 'ON' position and start switch pressed

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 present as described, check the brewer wiring harness

Reconnect the three pin connector from main wiring harness to the timer

Remove wires from control thermostat leads

Remove the thermostat capillary bulb by firmly pulling-up on the capillary at the tank lid

Remove the one #8-32 screw securing the control thermostat to the component bracket in the trunk

Slide the grommet to the line 4.5\ above the bulb on the new capillary tube"

Insert the capillary bulb through the hole in the tank lid and press the grommet firmly and evenly so that the groove in the grommet fits into the tank lid

Carefully bend the capillary tube so that the tube and bulb inside the tank are in the vertical position

NOTE - The capillary tube must be clear of any electrical termination and not kinked

Early Models: Using two #8-32 screws secure the control thermostat inside the hood

Late Models. Using one #8-32 screw secure the control thermostat to the component bracket inside the trunk

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

Disconnect the blue wire from the top switch terminal and the white/red from the bottom switch terminal

Check for continuity across the two terminals on the switch when it is held in the lower position. Continuity must not be present across these terminals in the upper position

If continuity is present as described, reconnect the blue wire to the top terminal and the white/red to the bottom terminal

If continuity is not present as described, replace the switch

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