Bunn Coffee Machine CWTF35-APS, SF

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: Always unplug the machine before cleaning

Cleaned all surfaces with a damp cloth rinsed in mild, non-abrasive, liquid detergent

Checked and cleaned the sprayhead

Inserted the deliming spring all the way into the sprayhead tube and sawed back and forth five or six times

Is the machine located in a hard water area?

Note: In hard water areas, step 4 may need to be done daily

Sign off on the coffee machine cleaning

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 supply before starting the test

Disconnect the blue wire from the top switch terminal

Disconnect 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

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

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 checked across the two terminals on the switch when it is in both positions

Continuity present across these terminals only in the full position

If continuity is not present as described, was the switch replaced?