Bunn FMDA DBC-3 Guía Del Usuario

35

FIG. 29 COLD WATER SOLENOID VALVE

P1682.40

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.

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. Disconnect the white and white/yellow wires from

the solenoid.

6. Check for continuity across the solenoid valve coil

terminals.

If continuity is present as described, reconnect the
white and white/yellow wires to the solenoid.

If continuity is not present as described, replace the
solenoid valve.

7. Check the solenoid valve for coil action. Connect

the dispenser to the power source. With "HOT/
COLD" switch in the "COLD" (upper) position press
the left dispense switch and listen carefully in the
vicinity of the solenoid valve for a "clicking" sound
as the coil magnet attracts.

8. 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. Loosen the two screws securing the component

bracket to the dispenser base. Lift the component
bracket off of the base and move to the right.

2. Remove the white and white/yellow wires from

the solenoid valve.

3. Turn off the water supply to the dispenser.

FIG. 28 RINSE/RUN SWITCH TERMINALS

P1456

BLU from Control
Board J3-8

GRN from Control
Board J3-7

Location:

The cold water solenoid valve is located on

the left side of the dispenser base just behind the com-
ponent bracket.

5. Refer to Fig. 28 when connecting  the wires to the

new switch.

6. Install new switch with wires attached through the

hole in the whipper motor mounting panel and
secure with facenut.

Test Procedures:
1. Disconnect the dispenser from the power source.
2. With the “HOT/COLD” switch in the "COLD" (up-

per) position press any left dispense switch on
front of the door.

3. With a voltmeter check the voltage across the

white and white/yellow wires at the solenoid termi-
nals. Connect the dispenser to the power source.
The indication must be:

29215 052104