Bunn Coffee Machine CWTF-35-APS

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, ensuring all holes remain open

Inserted the deliming spring all the way into the sprayhead tube, leaving no more than two inches visible, and sawed back and forth five or six times

Is this procedure being performed in a hard water area?

Note: In hard water areas, this procedure may need to be performed daily

Sign off on the coffee machine cleaning

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

Disconnect the brewer from the power source

Locate the blue wire on the control thermostat

Check the voltage across the blue wire on the control thermostat and the white insert on two pole 120 volt terminal block or three pole 120/ 240 volt terminal blocks and the red insert on two wire 200 volt or 240 volt terminal block with a voltmeter

Connect the brewer to the power source

Disconnect the brewer from the power source

Locate the black wire on the control thermostat

Gently remove the capillary bulb and grommet from the tank

Check the voltage across the black wire of the control thermostat and the white insert on the two pole 120 volt or three pole 120/240 volt terminal block and the red insert on the two pole 200 volt or 230 volt terminal block with a voltmeter when the control thermostat is turned fully clockwise

Connect the brewer to the power source

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: This procedure requires trained personnel with PPE!

Disconnect the brewer from the power source

Disconnect the polarized, three pin connector from the brewer wiring harness and rotate the brew timer dial fully counterclockwise

Voltage across sockets P2 & P3 (white and black wires) of the female connector when the 'ON/OFF' is in the 'ON' position (upper)

Disconnect the brewer from the power source

If voltage is present as described, proceed to #5. If voltage is not present as described, refer to the Wiring Diagrams and check the brewer wiring harness

Voltage across the sockets P1 & P2 (blue and white wires) of the female connector when the 'ON/OFF' switch is in the 'ON' position (upper) and start switch pressed

Disconnect the brewer from the power source

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