Service manual

Page 19
SERVICE (cont.)
SOLENOID VALVE - CT, CWT & SINGLE CW
Location:
The solenoid valve is located inside the trunk
on the lower center part of the component bracket.
Test Procedures:
1. Disconnect the brewer from the power source.
2. Disconnect the white/blue and white/green wires
from the solenoid valve. With the "ON/OFF"
switch in the "ON" upper position press the start
switch.
3. Check the voltage across the white/blue and white/
green wires with a voltmeter. Connect brewer to
power source. The indication must be:
a) 120 volts ac for two wire 120 volt models and
three wire 120/240 volt models.
b) 200 to 230 volts ac for two wire 200 or 230
volt models.
4. Disconnect brewer from the power source,
If voltage is present as described, proceed to #5
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.
If continuity is present as described, reconnect the
white/blue and white/green 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.
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 block-
age 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. Remove the white/blue and white/green from the
solenoid valve.
2. Turn-off the water supply to the brewer.
3. Disconnect the water lines to and from the sole-
noid valve.
4. Remove the two #8-32 screws securing the
solenoid mounting bracket to the component
bracket. Remove solenoid bracket and solenoid
valve as an assembly.
5. Remove the two #10-32 screws and lockwash-
ers 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.
7. Using two #8-32 screws install solenoid valve
and bracket to the component bracket.
8. Securely fasten the water lines to and from the
solenoid valve.
9. Refer to the illustration below when reconnecting
the wires.
P1132
P1153
10841 020503
WHI/BLU from Timer
WHI/GRN from Timer
FIG. 9 SOLENOID VALVE LOCATION
FIG. 10 SOLENOID VALVE WIRING