Bunn HC-2 Manual De Usuario

33

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.  Listen care-
fully 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 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 so-
lenoid valve.

2.

Turn-off the water supply to the dispenser.

3.

Disconnect the water lines to and from the sole-
noid valve.

4.

Remove the two #10-32 screws and nuts secur-
ing the solenoid to the rear panel. Remove sole-
noid.

5.

Using two #10-32 screws and nuts install new
solenoid valve on rear panel.

6.

Securely fasten the water lines to and from the
solenoid valve.

7.

Refer to Fig. 28 when reconnecting the wires.

P1217

FIG. 28 INLET SOLENOID VALVE TERMINALS

FIG. 29 TANK HEATER

P1199.40

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. Check the voltage across the black and white wires

120 volt models or black and red wires for 120/208
volt  models or 120/240 volt models with a voltme-
ter. 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.

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.

WHI from Terminal
Block

VIO from Liquid
Level Board

27591 031597