Safety Overflow Switch - Bunn H5M Operating & Service Manual

SERVICE (cont.)

Safety Overflow Switch

FIG. 3 SAFETY OVERFLOW SWITCH
Location:
The safety overflow switch is located inside the rear of
the dispenser inside the copper overflow cup.
Test Procedure:
1. Once voltage is verified at the power source, 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 each
of the red wires to the black wires, the safety overflow
switch is operating properly.
If continuity is not present as described, replace the
safety overflow switch.
Removal and Replacement:
1. Disconnect the black wires from the safety overflow
switch.
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 the float and
P1793
there must be NO stainless steel washers installed for
the safety overflow switch to operate properly.
5. Install the nut beneath the copper overflow cup.
Be sure not to overtighten.
6. Reconnect the wires, FIG. 4.
RED to BLK Wire from
Terminal Block
RED to BLK Wire from
Liquid Level Board #2
FIG. 4 SAFETY OVERFLOW WIRING
11
P1777
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