Bunn FMD-2 Operating & Service Manual page 35

SERVICE (cont.)
SOLENOID VALVE (DISPENSE) - FMD-1 & FMD-2
(cont.)
Remove panel and set aside.
3. Remove the two #8-32 securing the auger motor
mounting panel to the dispenser housing and the
two rear #8-32 screws from the side panels.
4. Tilt auger motor mounting panel forward allowing
access to the dispense valve(s).
5. Remove the wires from the solenoid valve.
6. Turn-off the water supply to the dispenser.
7. Drain enough water from the tank so the water
level is below the dispense valve mounting hole.
NOTE: Bunn-O-Matic has a syphon assembly,
#12440.0000. available for this purpose.
8. Disconnect the water line from the solenoid valve.
9. Remove the #10-32 screw securing the solenoid
valve to side of the tank. Remove solenoid valve.
10. Using the #10-32 screw install new solenoid valve
on side of the tank
11. Push the water line onto the tube on bottom of
solenoid valve.
12. Refer to Fig. 34 and reconnect the wires.
13. Reassemble auger and hopper components.
FMD-1
RIGHT
LEFT
FIG. 34 DISPENSE SOLENOID VALVE
TERMINALS
RED to Main Harness
WHI to Main Harness
ORN to Main
Harness
WHI to Main
Harness
TAN to Main Harness
WHI to Main Harness
FMD-2
SOLENOID VALVE (INLET) - FMD-1 & FMD-2
FIG. 37 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
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 harness.
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"
P1672
sound as the coil magnet attracts.
35
J 1
P1665
29112 101598