Bunn FMD-3 Benutzerhandbuch

27

FIG. 22 OVERFLOW PROTECTION SWITCH

P1199

Location:

The overflow protection switch is located in-

side the copper overflow cup on the left side of the
tank.

Test Procedures:
1. Disconnect the dispenser from the power source.
2. Remove the wire nuts connecting the red wires

from the overflow protection switch to  the black
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.

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. 23 when reconnecting wires.

FIG. 23 OVERFLOW PROTECTION

SWITCH LEADS

P1212

RED to BLK Wire
from Main Harness

RED to BLU Lead
from Liquid Level
Board

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