Bunn FMD-4 Manual De Usuario
33
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SERVICE (cont.)
FIG. 27 HOT/COLD SWITCH
P2635
HOT/COLD SWITCH (Optional)
Location:
The hot/cold switch is located on the left side of
the whipper motor mounting panel.
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Disconnect the four pin plug from the hot/cold
1. Disconnect the dispenser from the power source.
2. Disconnect the four pin plug from the hot/cold
switch and the four pin connector on the main
wiring harness.
wiring harness.
3. Press the left dispense switch on the door and,
with a voltmeter, check the voltage across the
white wire (pin 4) and red wire (pin 2) in the four
pin connector on the main wiring harness. Con-
nect the dispenser to the power source. The indi-
cation must be:
a) 120 volts ac for two wire 120 volt models, and
three wire 120/208 volt and 120/240 volt models.
b) 240 volts ac for two wire 240 volt models.
white wire (pin 4) and red wire (pin 2) in the four
pin connector on the main wiring harness. Con-
nect the dispenser to the power source. The indi-
cation must be:
a) 120 volts ac for two wire 120 volt models, and
three wire 120/208 volt and 120/240 volt models.
b) 240 volts ac for two wire 240 volt models.
4. Disconnect the dispenser from the power source.
If voltage is present as described, reconnect the four
pin plugs and proceed to #5.
If voltage is not present as described, refer to the
Wiring Diagrams and check the main wiring harness.
pin plugs and proceed to #5.
If voltage is not present as described, refer to the
Wiring Diagrams and check the main wiring harness.
5. Disconnect the wires from the switch terminals.
6. With the switch in the “Cold” (upper) position
6. With the switch in the “Cold” (upper) position
check for continuity between the center terminal
and the bottom terminal. With the switch in the
“Hot” (lower) position check for continuity be-
tween the center terminal and the upper terminal.
and the bottom terminal. With the switch in the
“Hot” (lower) position check for continuity be-
tween the center terminal and the upper terminal.
If continuity is present as described, the hot/cold
switch is operating properly.
If continuity is not present as described, replace the
switch.
switch is operating properly.
If continuity is not present as described, replace the
switch.
Removal and Replacement:
1. Remove all wires from the switch terminals.
2. Remove the mounting nut on the front of the whip-
1. Remove all wires from the switch terminals.
2. Remove the mounting nut on the front of the whip-
per motor mounting panel.
3. Remove the hot/cold switch from the rear of the
front panel and discard.
4. Reconnect the wires to the terminals on the rear
of the new switch.
5. Push new hot/cold switch through the hole on the
left side of the whipper motor mounting panel and
secure with mounting nut.
secure with mounting nut.
6. Refer to Fig. 28 when reconnecting the wires.
FIG. 28 HOT/COLD SWITCH TERMINALS
P1208
TAN to Main Harness
RED to Main Harness
WHI/YEL to Cold
Solenoid
Solenoid
35135 012103