Bunn FMD-1 - Manual (Page 27)

27
for two wire 120 volt models, three wire 120/208
and 120/240 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 the
wiring diagram and check dispenser wiring har-
ness.
5. Check for continuity across the solenoid valve coil
terminals.
If continuity is present as described, reconnect the
white and violet wires to the solenoid.
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 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
blockage 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. Remove the two #10-32 screws securing the so-
lenoid to the rear of the dispenser housing. Re-
move solenoid.
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. Install new solenoid on rear of dispenser housing
and tighten the two scrrews
8. Securely fasten the water lines to and from the
solenoid valve.
9. Refer to Fig. 27 when reconnecting the wires.
SERVICE (cont.)
FIG. 25 DISPENSE SOLENOID VALVE
TERMINALS
P1231
6. Using the #10-32 screw install new solenoid valve
on side of the tank
7. Push the water line onto the tube on bottom of
solenoid valve.
8. Refer to Fig. 25 when reconnecting the wires.
SOLENOID VALVE (DISPENSE)
SOLENOID VALVE (INLET)
FIG. 26 INLET SOLENOID VALVE
Location:
The inlet solenoid is located on the lower right
side of the rear panel.
Test Procedures:
1. Disconnect the dispenser from the power source.
2. Disconnect the white and violet wires from the
solenoid valve.
3. Check the voltage across the white and violet wires
with a voltmeter. Connect the dispenser to the
power source. The indication must be 120 volts ac
P1505
WHI/RED to Auger Motor
WHI to Main Harness
28364 041598