Filter
Top Products
Page 15
SERVICE (cont.)
BYPASS VALVE
Location:
The bypass valve is located inside the hood on the
left side just in front of the tank.
Test Procedures:
1. Disconnect the brewer from the power source.
2. With a voltmeter, check the voltage across the
white/green wire and the white/violet wire on the
bypass valve. Connect the brewer to the power
source. With the "ON/OFF (Warmer)" switch in the
"ON" (upper) position, and the selector switch in
the 1-1/2 or 2 gallon position press the start
switch. The indication must be:
a.) 120 volts ac for three wire 120/208 volt models
and three wire 120/240 volt models.
b.) 200 to 240 volts ac for two wire 200 or 240 volt
models.
3. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #4.
If voltage is not present as described refer to the
Wiring Diagrams
and check the brewer wiring har-
ness.
B
U
N
N
9
0
p
s
i
g
m
a
x
o
p
e
r
a
t
i
n
g
p
r
e
s
s
u
r
e
S
t
r
a
i
n
e
r
/
F
l
o
w
C
o
n
t
r
o
l
#
2
2
3
0
0
.
0
5
0
0
(
R
e
p
l
.
F
l
o
w
W
a
s
h
e
r
#
2
0
5
2
6
.
0
5
0
0
)
(
R
e
p
l
.
S
c
r
e
e
n
#
2
3
7
2
1
.
0
0
0
0
)
.
5
0
0
g
p
m
F
L
O
W
!
C
AU
TI
O
N
H
O
T
WAT
E
R
J
2
SE
T
L
O
CK
L
O
CK
SET
T
L
1
T
L
2
T
L
3
T
L
4
T
L
5
J
1
P2231.35
WHI/VIO to Brew Selector Switch
WHI/GRN to Dispense Valve
P1096
4. Disconnect the white/green wire and white/violet
wire. Check for continuity across the bypass valve
coil terminals.
If continuity is present as described, reconnect the
white/green and white/violet wires to the bypass valve
and proceed to #5.
If continuity is not present as described, replace the
bypass valve.
5. Check the bypass valve for coil action. Connect
brewer to the power source. With the "ON/OFF
(Warmer)" switch in the "ON" (upper)position press
the start switch. Listen carefully in the vicinity of
the bypass valve for a "clicking" sound as the coil
attracts and repels the plunger.
If the sound is heard as described, there may be a
blockage in the water line before the bypass valve or
the bypass valve may require inspection for wear and
removal of waterborne particles.
If the sound is not heard as described, replace the
bypass valve.
Removal and Replacement:
1. Remove the wires from the bypass valve.
2. Drain enough water from the tank so bypass valve
is above the water line.
3. Remove water lines from valve.
4. Remove two nuts retaining bypass valve inside the
hood and remove bypass valve.
5. Install new bypass valve.
6. Reconnect the water tubes and the wires to the
bypass valve.
7. Refer to FIG. 3 when reconnecting the wires.
FIG. 2 BYPASS VALVE
FIG. 3 BYPASS VALVE TERMINALS
27362 092900