Bunn Coffee Machine CWTF-APS DV

Warning: Always unplug the machine before cleaning

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

Check and clean the sprayhead. Ensure the sprayhead holes are open

With the sprayhead removed, insert the deliming spring (provided) all the way into the sprayhead tube. Saw back and forth five or six times

Note: In hard water areas, this may need to be done daily. It will help prevent liming problems in the brewer and takes less than a minute

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

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

If voltage is present as described, proceed to #5. If not, 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

If voltage is present as described, reinstall the capillary tube into the tank to the line 4.5\ (6.0\" for Single CW models) above the bulb

Sign off on the thermostat test

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: 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