Bunn AFPO-2 SL, AFPO-3 service manual Circuit Board, Service

SERVICE

CIRCUIT BOARD

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FIG. 2 CIRCUIT BOARD	P1520

Location:

The circuit board is located inside the autofill box, mounted on the right side of the solenoid mounting bracket under the switch panel.

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.Connect the dispenser to the power source. With a voltmeter, check the voltage across the black wire(#3) and the white wire (#6). 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.

c) 230 volts ac for two wire 230 volt models.

4.Disconnect the dispenser from the power source.

If voltage is present as described, replace the circuit board.

If voltage is not present as described, refer to the Wiring Diagrams and check main wiring harness.

Removal and Replacement:

1.Remove the four #8-32 keps nuts securing the switch mounting bracket. Set aside with the wires attached.

2.Remove the circuit board shield and set aside for reassembly.

3.Disconnect the ten pin plug from the main wiring harness to the circuit board.

4.Remove the six #4-40 screws and spacers secur- ing the circuit board to the solenoid mounting bracket. Remove circuit board and discard.

5.Install new circuit board using #4-40 screws and spacers to secure the circuit board to the solenoid mounting bracket. The spacers must be between the solenoid mounting bracket and the circuit board.

6.Place circuit board shield over the circuit board.

7.Install switch panel assembly and secure with four #8-32 keps nuts.

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

	J4
	J1
	J2
	J3
	P1528
	FIG. 3 CIRCUIT BOARD CONNECTOR LOCATION
10	28791 040501