Bunn FMD-1 - Manual (Page 25)

25
SERVICE (cont.)
Removal and Replacement:
1. Disconnect the red leads from the overflow pro-
tection switch from the black wire from the main
harness and the blue wire from the liquid level
board.
2. Remove the nut beneath the copper overflow cup.
3. Remove the entire switch assembly from the cup.
4. Place the new switch assembly into the cup, wires
first. Make sure that a gasket is in place around the
threaded switch stem.
NOTE - The magnets must be at the top of float and
there must be NO adjusting washers installed for
the overflow protection switch to operate prop-
erly.
5. Install the nut beneath the copper overflow cup. Be
sure not to overtighten.
6. Refer to Fig. 21 when reconnecting wires.
FIG. 21 OVERFLOW PROTECTION
SWITCH LEADS
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wire from the main harness and blue wire from the
liquid level board.
3. Check for continuity across the safety overflow
switch red wires only until the plastic float is raised
and check that continuity returns when the plastic
float is again lowered.
If continuity is present as described, reconnect the
red wires to the black wire from the main harness
and the blue wire from the liquid level board.
If continuity is not present as described, replace the
overflow protection switch.
OVERFLOW PROTECTION SWITCH (cont.)
RUN/RINSE SWITCH
FIG. 22 RUN/RINSE SWITCH
Location:
The run/rinse switch is located in the center
of the whipper motor mounting panel.
Test Procedures:
1.
Disconnect the dispenser from the power source.
2. Check for continuity between center terminals and
the upper terminals with the switch in the “RUN”
lower position. Continuity must not be present
with the switch in the “RINSE” upper position.
If continuity is present as described, the switch is
operating properly.
If continuity is not present as described, replace the
switch.
Removal and Replacement:
1.
Open the dispenser door.
2. Remove the facenut securing the run/rinse switch
to the dispenser front panel.
3. Remove switch with wires attached from the back
side of the front panel.
4. Disconnect the wires from the switch and dis-
card the switch.
5. Refer to Fig. 23 when connecting wires to the
new switch.
6. Install new switch with wires attached through
the hole in the front panel and secure with facenut.
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