Bunn Coffee Machine CWTF15-3

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

Disconnect the white/blue and white/green wires from the solenoid valve

Press the start switch with the 'ON/OFF' switch in the 'ON' upper position

Voltage across the white/blue and white/green wires

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

Check for continuity across the solenoid valve coil terminals

If continuity is not present as described, replace the Solenoid Valve

Check the solenoid valve for coil action

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

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

All wires removed from limit thermostat terminals

Limit thermostat slid out from under the retaining clip and removed

New limit thermostat slid into the retaining clip

Sign off on the thermostat replacement

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

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