Service Manual

16
REFILL VALVES
Location:
The refill valve is located inside the front of the
brewer.
Test Procedures:
1. Enter programming level 2, scroll to "Service Tools"
then scroll to "Refill Valve".
2. Briefly activate the refill valve in the test mode.
With a voltmeter, check the voltage across the coil
wires.
3. The indication must be 120 volts ac for two wire 120
volt models and three wire 120/208 -240 volt models
or 230 volts ac for two wire 230 volt models.
If voltage is present, proceed to # 4.
If voltage is not present, refer to Wiring Dia-
grams and check main wiring harness. If har-
ness checks ok, replace control board.
4. Check the refill valve for coil action. Briefly activate
the refill valve in the test mode and listen carefully near
the refill valve for a "clicking" sound as the magnetic
coil pulls the plunger in.
If the sound is heard as described and water
will not pass through the refill valve, there
may be a blockage in the water line before
the refill valve or, the solenoid valve may
require inspection for wear, and removal of
waterborne particles.
If the sound is not heard as described, pro-
ceed to # 5.
5. Disconnect the brewer from the power source. 6.
Check for resistance across the coil terminals (200
-2k depending on which coil is being checked).
If resistance is not present as described,
replace the refill valve.
If resistance is present as described, check
for debris in the valve.
Removal and Replacement:
1. Remove both wires from the refill valve.
2. Verify that the white shutoff clamp between valve
and tank is squeezed shut.
3. Disconnect both water lines at the valve.
4. Remove the two screws securing the valve to the
component mounting bracket.
5. Using the two screws, install the new valve to the
component mounting bracket.
6. Securely fasten the water lines to the valve.
7. Refer to wiring diagrams when reconnecting the
wires.
8. Install access panels and covers and refer to Initial
Set-up for refill and operation.
FIG. 16-1 REFILL VALVES
ICB & & ITB
ITCB & ITB-DD
STRAINER
STRAINER
Flow control used
on dual dilution
models only
54299 030818