Bunn Brewer CDBCF-DV

Remove both wires from the refill valve

Turn off the water supply to the brewer and drain the tank

Disconnect the water lines to and from the refill valve

Remove the two 1/4\-20 screws securing the refill valve mounting bracket to the component bracket"

Remove bracket and valve as an assembly

Using two 1/4\-20 screws install the new refill valve and bracket to the component bracket"

Securely fasten the water lines to and from the valve

Install access panels and covers and refer to Initial Set-up for refill and operation

Warning: This maintenance check requires trained personnel with PPE!

If the control board fails the test, proceed to replace the Brewer Control Board

Disconnect the black wire and blue wire from the relay on the control board

Disconnect the 10-pin connector and the 4-pin connector from the main wiring harness

Disconnect the 11-pin connector from the control panel

Remove the four #6 screws and four nylon washers and the two #4-40 screws securing the control board to the end cap assembly

Install a new control board and secure with the four #6 screws and nylon washers and the two #4- 40 screws to the end cap assembly

NOTE: The four nylon washers must be installed under the heads of the four #6 screws to prevent a possible shorting of the control board circuits

Warning: This maintenance check requires trained personnel with PPE!

If the Brewer Switch Panel fails the test, proceed to the replacement procedure

Disconnect the 11-pin connector to the switch panel from the control board

Remove the four #6 screws, nylon washers and the two #4-40 screws securing the control board to the end cap assembly and set aside

Gently pry the switch panel from the end cap assembly

Remove any adhesive that remains on the end cap

Remove the adhesive backing from the new switch panel. Insert the ribbon connector through the slot in the end cap and apply the switch panel to the end cap

Install the control board to the back side of the end cap using the four #6 screws, nylon washers and the two #4-40 screws to the end cap assembly

Remove the top cover or top warmer housing and front access panel

Disconnect the vent hose from the top of the tank

Disconnect the water supply tube to the dispense valve from the side of the tank

Disconnect the water supply tube to the solenoid valve from the bottom of the tank

On brewers with faucet, disconnect the outlet water line to the faucet from the side of the tank

Disconnect the temperature probe from the top of the tank

Disconnect the pink wire from the level probe

Disconnect the green wire from the top of the tank

Disconnect the brewer from the power source

Disconnect the white and white/blue wires from the refill valve. Set the 'ON/OFF' switch in the 'ON' upper position

Voltage across the coil wires after connecting the brewer to the power source

Disconnect the brewer from the power source

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

Continuity across the refill valve coil terminals

If continuity is not present as described, replace the refill valve

Check the refill valve for coil action. Connect the brewer to the power source. With 'ON/OFF' switch in the 'ON' upper position press start switch and listen carefully in the vicinity of the refill valve for a 'clicking' sound as the coil magnet attracts