36
SERVICE (cont.)
DAY/NIGHT SWITCH
If continuity is present as described, the day/night
switch is operating properly.
If continuity is not present as described, replace the
day/night switch.
Removal and Replacement:
1. Pull the dispenser drawer out until the drawer hits
the drawer stop. Using a screwdriver gently pry up
on the drawer stop and remove the drawer from
the dispenser.
2. Remove the four #8-32 locking screws securing
the switch panel to the drawer.
3. Lift switch panel with wires and L.E.D. board as an
assembly.
4. Turn switch panel over and remove the wires from
the DAY/NIGHT switch.
5. Compress the clips on the back of the control panel
and gently push switch through the opening.
6. Push the new switch into the opening, with the “o”
on the switch to the outside, until the clips snap
into position.
7. Reconnect the wires to the switch. Refer to Fig. 26
when reconnecting wires.
8. Position the switch panel inside the drawer and
secure with four #8-32 locking screws.
9. Reinstall drawer.
FIG. 26 DAY/NIGHT SWITCH TERMINALS
P1335
FIG. 25 DAY/NIGHT SWITCH
P1343
Location:
The DAY/NIGHT switch is located inside the dis-
penser drawer on the right front of the control panel.
Test Procedures:
1. Disconnect the dispenser from the power source.
2. Disconnect the white/green wire from the switch
and the white/black wire from contactor located on
the outside bottom of the component bracket .
3. With a voltmeter, check the voltage across the
white/green and the white/black and the ”ON/OFF“
switch in the “ON” position. Connect the dispenser
to the power source. The indication must be:
a) 120 volts ac for 120 volt models.
b) 230 volts ac for 230 volt models.
4. Disconnect the dispenser from the power source.
If voltage is present as described, reconnect the white/
black wire to the contactor and proceed to #5.
If voltage is not present as described, refer to the
Wiring Diagram and check the dispenser wiring har-
ness.
5. Remove the white/red wire from the transformer.
6. With the DAY/NIGHT switch in the “DAY” position
check for continuity across the terminals. Conti-
nuity must not be present when the switch is in the
“NIGHT” position.
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