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17
SERVICE (cont.)
Safety Overflow Switch
Location:
The safety overflow switch is located inside the rear of
the dispenser inside the copper overflow cup.
For testing or removal of the safety overflow switch,
access may also be needed by removing the two screws
attaching the electronic control assembly to its mount-
ing bracket.
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.
FIG. 8 SAFETY OVERFLOW SWITCH
FIG. 9 SAFETY OVERFLOW WIRING
O
N
CA
UTION
!
Failure To Comply Voids Warranty!
H
ot W
ate
r S
ys
te
m
s
–
W
ater T
ank
W
ill F
ill
A
uto
m
a
tic
a
lly
W
h
e
n U
nit I
s C
onn
e
cted
To
Po
w
er!
C
o
ffe
e B
r
ew
e
rs
–
F
ill T
he
W
a
ter
T
an
k In
A
c
co
rd
an
ce W
ith
Th
e
Ins
ta
llation
In
struct
io
ns
!
DO NOT
Turn On The Tank Heater Switch
Until Water Comes From Opened Faucet!
O
N
OFF
ON
STOP
R
E
A
D
N
O
T
IC
E
RED to BLK Wire from
Terminal Block
RED to BLK Wire from
Electronic Control #3
P1772
P1777
Removal and Replacement:
1. Disconnect the black wires from the safety over-
flow 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
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. 9.
10420 011599