Bunn FMD-3 service manual Hopper Delay Board, SERVICE cont, FROTHER AND WHIPPER MOTOR cont

SERVICE (cont.)

FROTHER AND WHIPPER MOTOR (cont.)

	RIGHT
	FMD- 2 & 3
	CENTER
	FMD-3 ONLY
LEFT
FMD-2 & 3	BLK to Main
	Harness WHI/VIO
	BLK to Main
	Harness WHI
	BLK to Main Harness ORA
	BLK to Main Harness WHI

BLK to Main Harness RED

BLK to Main Harness WHI

FIG.13 WHIPPER MOTOR TERMINALS P1451.40

HOPPER DELAY BOARD

P1445.40

FIG. 14 HOPPER DELAY BOARD

Location

The hopper delay board is located behind the lower front access panel mounted in the center of the component bracket.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the eight pin plug on the main wiring harness from the eight pin connector on the hop- per delay board.

3.With the rinse/run switch in the “Run”, lower position, check the voltage across the white and black wires of the main wiring harness 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)120 volts ac for three wire 120/208 volt or 120/ 240 volt models.

c)240 volts ac for two wire 240 volt models.

4.Disconnect the dispenser from the power source.

If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to the wir- ing diagram and check the dispenser wiring harness.

5.Reconnect the eight pin connector of the hopper delay board to the main harness.

6.Check the voltage across the terminals on the auger motor with a voltmeter. Press and hold the appropriate dispense switch. Connect the dis- penser to the power source. After a delay of .7 seconds the indication must be:

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

b)120 volts ac for three wire 120/208 volt or 120/ 240 volt models.

c)240 volts ac for two wire 240 volt models.

7.Disconnect the dispenser from the power source.

If voltage is present as described the hopper delay board is operating properly.

If voltage is not present as described, replace the hop- per delay board.

Removal and Replacement:

1.Disconnect the eight pin plug from the hopper delay board.

2.Remove the two #8-32 keps nuts securing the hopper delay board to the component bracket.

3.Remove hopper delay board and discard.

4.Install new delay board on the component bracket using two #8-32 keps nuts.

5.Reconnect the eight pin connector to the hopper delay board.

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