Bunn FMD-2 Manuel de service télécharger pdf (Page 30)

SERVICE (cont.)

SOLENOID VALVE (COLD WATER - OPTIONAL) (cont.)

FIG. 27 COLD WATER SOLENOID TERMINALS

P1215

SOLENOID VALVES (DISPENSE)

FIG. 28 DISPENSE SOLENOID VALVES

P1445.40

Location:

The dispense solenoids are located on the

upper left side of the tank.

Test Procedures:

1. Disconnect the dispenser from the power source.

2. Disconnect the white and white/violet, orange or

tan wires from the solenoid valve. With the “RUN/

RINSE” switch in the "RINSE" upper position

press the appropriate dispense switch on front of

the door.

3. Check the voltage across the white and white/

violet, orange or tan wires with a voltmeter.

Connect the dispenser to the power source. The

indication must be 120 volts ac for two wire 120

volt models, three wire 120/208, 120/240 volt

models and 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 wiring

diagram and check dispenser wiring harness.

5. Check for continuity across the solenoid valve

coil terminals.

If continuity is present as described, reconnect the

white and white/violet, orange or tan wires to the so-

lenoid.

If continuity is not present as described, replace the

solenoid valve.

6. Check the solenoid valve for coil action. Connect

the dispenser to the power source. With "RUN/

RINSE" switch in the "RINSE" upper position press

the appropriate dispense switch and listen care-

fully in the vicinity of the solenoid valve for a "click-

ing" sound as the coil magnet attracts.

7. Disconnect the dispenser from the power source.

If the sound is heard as described and water will not

pass through the solenoid valve, there may be a block-

age in the tank water outlet before the solenoid valve

or, the solenoid valve may require inspection for wear,

and removal of waterborne particles.

If the sound is not heard as described, replace the

solenoid valve.

Removal and Replacement:

1. Remove the white and white/violet,orange or tan

wires from the solenoid valve.

2. Turn-off the water supply to the dispenser.

8. Securely fasten the water lines to and from the

solenoid valve.

9. Refer to Fig. 27 when reconnecting the wires.

WHI/YEL to Hot/

Cold Switch

WHI to Main Wiring

Harness

28364 011598

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 36

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Bunn FMD-2 Manuel de service Page 30

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