Bunn FMD-3 service manual DISPENSE SWITCH cont, SERVICE cont

SERVICE (cont.)

DISPENSE SWITCH (cont.)

6.Check for continuity across the terminals on the dispense switch with the switch in the “ON” pressed position. Continuity must not be present when the switch is in the “OFF” released posi- tion.

If continuity is present as described, reconnect the connector to the door interconnect wiring harness, the switch is operating properly.

If continuity is not present as described, replace the switch.

Removal and Replacement

1.Open the dispenser door.

2.Remove the five #6-32 screws securing the bot- tom door cover and remove cover.

3.Disconnect the wires on the dispense switch to be removed from the door interconnect wiring harness.

4.Compress the clips inside the door on the dis- pense switch and gently push the switch through the opening.

5.Push new switch into the opening and spread the clips to hold the switch in the door.

6.Reconnect the wires to the dispense switch from door interconnect wiring harness.

7.Reinstall the door bottom cover using five #6-32 screws.

8.Refer to Fig. 9 when reinstalling wires.

	BLK
	RED/BLK
	BLK
	RED/WHI
BLK
RED	RIGHT
	FMD 2 & 3
	CENTER
	FMD-3 ONLY
	LEFT
	FMD 2 &3
	FIG. 9 DISPENSE SWITCH TERMINALS	P1449

FAN
FIG. 10 FAN	P1436

Location:

The fan is located inside the dispenser hous- ing on the right rear of the dispenser base plate.

Test Procedures:

1.Disconnect the dispenser from the power source.

2.Disconnect the black and white wires from the fan terminals.

3.Check the voltage across the black and white wires with a voltmeter. Connect the dispenser to the power source. The indication must be:

a)120 volts ac for two wire 120 volts 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.

If voltage is present as described, replace the fan

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

Removal and Replacement:

1.Disconnect the vacuum hose from the fan.

2.Remove the two #8-32 locking screws securing the fan to the dispenser housing base plate.

3.Disconnect the wires from the fan terminals and discard the fan

4.Refer to Fig.11 and connect the wires to the new fan.

5.Install new fan through the rear access hole and secure to the dispenser housing base plate using two #8-32 locking screws.

18 28364 071598