Bunn Coffee Machine CWTF TWIN

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: Ensure the coffee machine is unplugged before starting the procedure

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

Removed circuit board and spacers

Removed all wires from the timer

Attached all wires to the replacement timer board prior to installation to the component mounting bracket

Upload a photo of the wires connected as per FIG. 21

Installed new circuit board with spacers to the component mounting bracket

Adjusted the timer as described

Sign off on the timer replacement

Remove the white/blue and white/green from the solenoid valve

Turn-off the water supply to the brewer

Disconnect the water lines to and from the solenoid valve

Remove the two #8-32 screws securing the solenoid mounting bracket to the component bracket. Remove solenoid bracket and solenoid valve as an assembly

Remove the two #10-32 screws and lockwashers securing the solenoid valve to the solenoid bracket

Using two #10-32 screws and lockwashers install new solenoid valve on solenoid mounting bracket

Using two #8-32 screws install solenoid valve and bracket to the component bracket

Securely fasten the water lines to and from the solenoid valve

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

Disconnect the white/red wire 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

Is continuity present as described?

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