Bunn Beverage Dispenser AF PR-3 Manual De Usuario

8

Removal  and Replacement:

1.  Disconnect the ten pin plug from the main wiring 

harness to the circuit board.

2.  Remove the six #4-40 screws and spacers securing 

the circuit board to the solenoid mounting bracket. 

Remove circuit board and discard.

3.  Install new circuit board using #4-40 screws and 

spacers to secure the circuit board to the vacuum 

switch mounting bracket. The spacers must be 

between the solenoid mounting bracket and the 

circuit board.

4.  Refer to Fig. 3 for circuit board ten pin connector.

FIG. 3 CIRCUIT BOARD CONNECTOR LOCATION

P1528

FIG. 2 CIRCUIT BOARD

P1556

OFF

O

N

OFF

O

N

OFF

O

N

Location:

 

The circuit board is located inside the autofill 

box, mounted on the right side of the vacuum switch 

mounting.

Test Procedure:

1.  Disconnect the dispenser from the power source.

2.  Disconnect the ten pin plug on the main wiring 

harness from the connector on the circuit board.

3.  Check the voltage across the black wire(#3) and 

the white wire (#6) with a voltmeter. Connect the 

dispenser to the power source. The indication 

must be:

 

a) 120 volts ac for two wire 120 volt models.

  b) 200 to 240 volts ac for two wire 200 or 240 

volt models.

If voltage is present as described, replace the circuit 

board. 

If voltage is not present as described, refer to the 

wiring diagrams and check the main wiring harness.

28791.1 011500