Bunn FMD-3 service manual Ballast, SERVICE cont

Models: FMD-3

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BALLAST

SERVICE (cont.)

BALLAST

 

FIG. 4 BALLAST

P1445

 

Location

 

The front door lamp ballast is located behind the front access panel on the left side of the compo- nent bracket.

Test Procedure

1.Disconnect the dispenser from the power source.

2.Disconnect the two terminal plug of the door interconnect harness from the main wiring har- ness.

3.Check the voltage across the white wire and the blue wire terminal of the ballast with a voltmeter. Connect the dispenser to 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 models or 120/240 volts models.

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

If voltage is present as described the ballast is oper- ating properly.

If voltage is not present as described, replace the ballast.

Removal and Replacement

1.Disconnect the wires from the ballast.

2.Remove the one #8-32 screw securing the bal- last to the component bracket.

3.Remove and discard ballast.

4.Install new ballast over the weld pin on the com- ponent bracket and secure with one #8-32 screw.

5.Refer to Fig. 5 when reconnecting the wires.

BLK to Main Wiring

 

Harness

 

BLK to BLU

 

from Door

 

Interconnect

 

Harness

 

FIG. 5 BALLAST TERMINALS

P1447

 

15

28364 011598

 

Page 15
Image 15
Bunn FMD-3 service manual Ballast, SERVICE cont