Bunn Coffee Machine CWTF 15 PF

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

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

Enter the timer dial adjustment

Sign off on the timer replacement

Disconnect the brewer from the power source

Use the white or red wire to the terminal block and the white/red, brown/black or violet wire to the 'ON/OFF' switch

Check voltage across the white or red and white/ red, brown/black or violet with a voltmeter with the 'ON/OFF' switch in the 'ON' position

Disconnect the brewer from the power source

If voltage is present as described, proceed to #5

If voltage is not present as described, check brewer wiring harness

Check the continuity across the two terminals on the warmer element

If continuity is present as described, reconnect the white or red and white/red, and brown/black or violet wires on the warmer element

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 with a voltmeter when the ON/OFF is in the ON position (upper)

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 with a voltmeter when the ON/OFF switch is in the ON position (upper) and start switch pressed

If voltage is not present as described, check the brewer wiring harness

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

Disconnect the water supply tube from the fill basin

Remove the tank inlet fitting securing the fill basin to the tank lid, remove fill basin and tank inlet gasket. Set all three parts aside for reassembly

On brewers with faucet shut-off water supply to the brewer and disconnect the inlet and outlet water lines to the faucet coil assembly

Disconnect the black wire on the limit thermostat from the tank heater switch. On late model brewers also disconnect the blue wire from the limit thermostat to the control thermostat

Disconnect the black wire and the white or red wire from the tank heater terminals

Remove sprayhead and the hex nut securing the sprayhead tube to the hood. Set aside for reassembly

Remove the eight #8-32 nuts securing the tank lid to the tank

Remove the tank lid with limit thermostat, sprayhead tube, tank heater, coil assembly and control thermostat w/bracket (early models only)

Remove the two hex nuts securing the tank heater to the tank lid. Remove tank heater with gaskets and discard

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 present across the two terminals on the switch in both positions

Continuity present across these terminals only in the full position

If continuity is not present as described, replace the switch

Sign off on the Selector Switch Test