Bunn FMDA DBC-3 Mode D'Emploi

36

4. Disconnect the water lines to and from the sole-

noid valve.

5. Loosen the two #8-32 screws and washers se-

curing the solenoid mounting bracket to the base.
Remove solenoid bracket and solenoid valve as
an assembly.

6. Remove the two #10-32 screws and lockwashers

securing the solenoid valve to the solenoid bracket.

7. Using two #10-32 screws and lockwashers install

new  solenoid valve on solenoid mounting bracket.

8. Install the solenoid valve and bracket on the dis-

penser base and tighten the two #8-32 screws.

9. Securely fasten the water lines to and from the

solenoid valve.

10. Refer to Fig. 30 when reconnecting the wires.

FIG. 30 COLD WATER SOLENOID TERMINALS

P1215

WHI/YEL to Hot/
Cold Switch
WHI to Main Wiring
Harness

FIG. 31 DISPENSE SOLENOID VALVES

P1682.40

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. With a voltmeter check the voltage across the

white and white/violet, orange or tan wires at the
dispense solenoid. Connect the dispenser to the
power source. With the “RUN/RINSE” switch in
the "RINSE" (upper) position press the appropriate
dispense switch on front of the door. The indica-
tion must be:
a) 120 volts ac for two wire 120 volt models
b) 120 volts ac for  three wire 120/208 or 120/240
volt models
c) 240 volts ac for two wire 240 volt models.
d) 230 volts ac for two wire 230 volt models.

3. Disconnect the dispenser from the power source,

If voltage is present as described, proceed to #4
If voltage is not present as described, refer to wiring
diagram and check dispenser wiring harness.

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

tan wires from the solenoid valve.

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
carefully in the vicinity of the solenoid valve for a
"clicking" 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.

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