Bunn HC-2 HC-3 service manual Hopper Delay Board, SERVICE cont

SERVICE (cont.)

HOPPER DELAY BOARD

P1199.45

FIG. 13 HOPPER DELAY BOARD

Location

The hopper delay board is located on the left front side of the dispenser base just behind the front panel.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the white and black wires of the hopper delay board harness from the main wiring har- ness.

3.Check the voltage across the white and black wires of the main wiring harness with a voltmeter. Con- nect the dispenser to the power source. The indi- cation 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 white and black wires of the hop- per delay board harness 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 mounting bracket to the dis- penser base.

3.Remove hopper delay board mounting bracket with hopper delay board and shield attached.

4.Remove the two #8-32 screws securing the hop- per delay board to the mounting bracket and dis- card the delay board.

5.Install new delay board on the mounting bracket with shield between the bracket and the delay board using two #8-32 screws.

6.Install mounting bracket with hopper delay board and shield over the studs on the dispenser base, secure with two #8-32 keps nuts.

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

22 27591 031597