Bunn FMDA DBC-3 Mode D'Emploi

39

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 water line 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 violet wires from the sole-

noid valve.

2. Turn off the water supply to the dispenser.
3. Disconnect the water lines to and from the sole-

noid valve.

4. Loosen the two #8-32 screws  securing the sole-

noid to the rear dispenser housing. Remove sole-
noid.

5. Remove the two #8-32 U-Type fasteners from the

solenoid bracket.

6. Install the two #8-32 U-Type fasteners  and the

two #8-32 screws on the new solenoid.

7. Securely fasten the water lines to and from the

solenoid valve.

8. Install new solenoid valve on rear of dispenser

housing and tighten the two screws.

9. Refer to Fig. 36 when reconnecting the wires.

P1217

FIG. 36 INLET SOLENOID VALVE TERMINALS

FIG. 37 TANK HEATER

P1682.40

Location:

The tank heater is located inside the tank and

secured to the tank lid.

Test Procedure:
1. Disconnect the dispenser from the power source.
2. With a voltmeter check the voltage across the

black and white wires 120 volt or 240 volt models
or black and red wires for 120/208 volt  models or
120/240 volt models. Connect the dispenser to the
power source. The indication must be:
a) 120 volts ac for two wire 120 volt models;
b) 208 volts ac for three wire 120/208 volt models.
c) 240 volts ac for three wire 120/240 volt models
and 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 the
dispenser wiring diagram and check the wiring har-
ness.

4. Disconnect the black wire and the white or red

wire from the tank heater terminals.

6. Check the solenoid valve for coil action. Connect

the dispenser to the power source.  Listen care-
fully in the vicinity of the solenoid valve for a "click-
ing" sound  as the coil magnet attracts.

WHI to Main
Harness

VIO to Main
Harness

29215 052104