Bunn CDS-3 Bedienungsanleitung PDF herunterladen (Seite 49)

SERVICE (cont.)

TRANSFORMER

FIG. 51 TRANSFORMER TERMINALS

P1329

FIG. 50 TRANSFORMER

P1342

Location:

The transformer is located inside the chassis on

the upper rear side of the component bracket.

Test Procedures:

1. Disconnect the dispenser from the power source.

2. Disconnect the plug from the transformer to the

connector from the dispenser main wiring har-

ness.

3. With a voltmeter, check the voltage across the

white/red wire and the white/black wire in the

dispenser main wiring harness connector. Con-

nect the dispenser to the power source. The indi-

cation must be:

a) 120 volts ac for 120 volt models.

b) 230 volts ac for 230 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

Wiring Diagram

and check the dispenser main wiring

harness.

5. Reconnect the plug from the transformer to the

connector from the dispenser main wiring har-

ness.

6. Connect the dispenser to the power source.

7. Disconnect the lamp cord from the lamp cord

connector.

8. With a voltmeter, check the voltage across the

inside of lamp cord socket and the outside with the

DAY/NIGHT switch in the “-” down position. The

indication must be approximately 12.6 volts dc.

9. Disconnect the dispenser from the power source.

If voltage is present as described, the transformer is

operating properly.

If voltage is not present as described, replace the trans-

former.

Removal and Replacement:

1. Remove the four #8-32 locking screws securing

the component bracket to the chassis.

2. Pull component bracket from the chassis far

enough to gain access to the transformer.

3. Disconnect the connector from the dispenser main

wiring harness from the plug on the transformer.

4. Remove the four #8-32 locking screws securing

the transformer to the component bracket.

5. Remove transformer and discard,

6. Position new transformer on the component

bracket and secure with four #8-32 locking screws.

7. Reconnect the plug on the transformer to the

connector on the dispenser wiring harness.

8. Refer to Fig. 51 and reconnect the wires.

9. Position component bracket in the chassis and

secure with four #8-32 locking screws.

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