Bunn CWT-TS ユーザーズマニュアル
Page 18
SERVICE (cont.)
SOLENOID VALVE
1
2
3
4
5
.5
MINUTES
BUNN-O-MATIC
P/N 2235-120 VAC
USE COPPER WIRE ONLY FOR
POWER SUPPLY CONNECTIONS
B
U
N
N
C
W
S
E
R
IE
S
R
E
A
D
Y
P1127
Location:
The solenoid valve is located inside the trunk on
the center lower part of the component bracket.
Test Procedures:
1.
1.
Disconnect the brewer from the power source.
2.
Disconnect the white and black wires from the
solenoid valve. With the "ON/OFF" switch in the
"ON" upper position press the start switch.
solenoid valve. With the "ON/OFF" switch in the
"ON" upper position press the start switch.
3.
Check the voltage across the white and black
wires with a voltmeter. Connect the brewer to the
power source. The indication must be 120 volts
ac for two wire 120 volt models and three wire
120/240 volt models.
wires with a voltmeter. Connect the brewer to the
power source. The indication must be 120 volts
ac for two wire 120 volt models and three wire
120/240 volt models.
4.
Disconnect the brewer from the power source,
If voltage is present as described, proceed to #5
If voltage is not present as described, refer to
If voltage is not present as described, refer to
Wiring
Diagrams and check brewer wiring harness.
5.
Check for continuity across the solenoid valve
coil terminals.
coil terminals.
If continuity is present as described, reconnect the
white and black wire from the timer.
If continuity is not present as described, replace the
solenoid valve.
white and black wire from the timer.
If continuity is not present as described, replace the
solenoid valve.
6.
Check the solenoid valve for coil action. Connect
the brewer to the power source. With "ON/OFF"
switch in the "ON' upper position press start
switch and listen carefully in the vicinity of the
solenoid valve for a" clicking" sound as the coil
magnet attracts.
the brewer to the power source. With "ON/OFF"
switch in the "ON' upper position press start
switch and listen carefully in the vicinity of the
solenoid valve for a" clicking" sound as the coil
magnet attracts.
7.
Disconnect the brewer from the power source.
If the sound is heard as described and water will not
pass through the solenoid valve, there may be a
blockage in the water line before the solenoid valve or,
the solenoid valve may require inspection for wear,
and removal of waterborne particles.
If the sound is not heard as described, replace the
solenoid valve.
pass through the solenoid valve, there may be a
blockage in the water line before the solenoid valve or,
the solenoid valve may require inspection for wear,
and removal of waterborne particles.
If the sound is not heard as described, replace the
solenoid valve.
Removal and Replacement:
1.
1.
Remove the white and black from the solenoid
valve.
valve.
2.
Turn-off the water supply to the brewer.
3.
Disconnect the water lines to and from the sole-
noid valve.
noid valve.
4.
Remove the two #8-32 screws securing the sole-
noid mounting bracket to the component bracket.
Remove solenoid bracket and solenoid valve as
an assembly.
noid mounting bracket to the component bracket.
Remove solenoid bracket and solenoid valve as
an assembly.
5.
Remove the two #10-32 screws and lockwashers
securing the solenoid valve to the solenoid bracket.
securing the solenoid valve to the solenoid bracket.
6.
Using two #10-32 screws and lockwashers in-
stall new solenoid valve on solenoid mounting
bracket.
stall new solenoid valve on solenoid mounting
bracket.
7.
Using two #8-32 screws install solenoid valve
and bracket to the component bracket.
and bracket to the component bracket.
8.
Securely fasten the water lines to and from the
solenoid valve.
solenoid valve.
P1132