Bunn FMD-2 Operating & Service Manual page 34

SERVICE (cont.)
TANK HEATER SWITCH (cont.)
Test Procedure:
1. Disconnect the dispenser from the power source.
2. Disconnect the black wire from the power supply
and the black wire from the control thermostat.
3. With the switch in the "ON" lower position check
for continuity between the center and the upper
terminal. With the switch in the "OFF" upper posi-
tion no continuity should be present between
center and upper terminals.
If continuity is present as described, the heater "ON/
OFF" switch is operating properly.
If continuity is not present as described, replace the
switch.
Removal and Replacement:
1. Refer to the hopper section in this manual and
remove the hopper assemblies and the hopper
support plate.
2. Remove the switch mounting nut on the front of
the front panel.
3. Remove switch with wires attached from the rear
of the front panel.
4. Remove the wires from the switch terminals and
discard switch.
5. Connect the wires to the new switch, refer to fig.
35.
5. Push new switch through hole in the front panel
and secure with face nut.
7. Refer to the hopper section in this manual and
install the hopper support plate and the hopper
assemblies.
BLK to Control Thermostat
(Mechanical Thermostat)
WHI/BRN to Control Thermostat
(Electronic Thermostat)
BLK from Power Supply
(Mechanical Thermostat)
WHI/BRN to Control Thermostat
(Electronic Thermostat)
FIG. 35 TANK HEATER SWITCH TERMINALS
P1219
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