Руководство Пользователя для Bunn FMD-4
37
P2641
FIG. 34 INLET SOLENOID VALVE TERMINALS
SERVICE (cont.)
WHI from Main Harness
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 solenoid
valve.
2. Turn-off the water supply to the dispenser.
3. Disconnect the water lines to and from the solenoid
valve.
4. Remove the two #8-32 screws securing the sole-
noid to the rear of the dispenser housing. Remove
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 screws
8. Securely fasten the water lines to and from the
solenoid valve.
9. Refer to Fig. 34 and reconnect the wires.
VIO from Main Harness
SOLENOID VALVE (INLET)
FIG. 33 INLET SOLENOID VALVE
Location:
The inlet solenoid is located on the lower left side
near 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:
a) 120 volts ac for two wire 120 volt models, three
wire 120/208 volt, and 120/240 volt models.
b) 240 volts ac for two wire 240 volt models.
c) 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 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.
P2635
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.
35135 100407