Bunn Coffee Machine 23001.0052

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

Select the model of the machine

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

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

Locate the blue wire on the control thermostat

Voltage across the blue wire on the control thermostat

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 as described, refer to the wiring diagrams and check the brewer wiring harness

Locate the black wire on the control thermostat

Remove the capillary bulb and grommet from the tank

Voltage across the black wire of the control thermostat when the control thermostat is turned fully clockwise

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

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

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

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

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

Disconnect the black and white wires from the solenoid

Check the voltage across the black and white wires when the 'ON/OFF' switch is in the 'ON' position and the 'START' switch is pressed to the 'START' position and released

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

Remove circuit board and spacers (as required)

Remove all wires from the timer

Attach all wires to the replacement timer board prior to installation to the component mounting bracket. Refer to FIG. 21 when reconnecting the wires

Install new circuit board with spacers (as required) to the component mounting bracket

Adjust the timer as described below

Sign off on the timer replacement