Refill Valves - Bunn TITAN DUAL Service & Repair Manual

COMPONENT ACCESS (cont)
DISPENSE VALVES (cont)
Set the meter to AC volts. Turn on the valve with
the test mode. The indication should be the line
voltage rated for that model.
If voltage is present as described, but no coil action
is observed, valve is defective. Replace valve and test
again to verify repair.
If voltage is not present as described, refer to Wir-
ing Diagrams and check the brewer wiring harness.
Also check the control board and switch for proper
operation.
Removal and Replacement:
1. Disconnect the brewer from the power source.
2. Disconnect wires from the valve.
3. Drain enough water from the tank so the water
level is below the outlet.
4. Remove tube from the valve.
5. Remove the sprayhead and nut securing valve to
the sprayhead panel.
6. Install new valve using nut removed in step 5.
Clean and install the sprayhead.
7. Reconnect tube to the valve and secure in place
with clamp.
REFILL VALVE
Location:
The refill valve (Fig 4) is located inside the front
of the brewer behind the front access panel.
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 120/208 and
120/240 volt models or 230 volts ac for 230/400
volt models.
If voltage is present, proceed to # 4.
RELEASED FOR PRODUCTION
DIR Num: 41747.0000
FIG 4 REFILL VALVE
If voltage is not present, refer to Wiring Diagrams
and check main wiring harness. If harness 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, proceed to
# 5.
5. Disconnect the brewer from the power source.
6. Check for continuity across the refill valve coil
terminals.
If continuity is not present as described, replace
the refill valve.
If continuity is present as described, there could
be some debris in the valve.
Removal and Replacement:
1. Shut off the water supply and drain the tank.
2. Remove both wires from the refill valve.
3. Disconnect both water lines at the valve.
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12, December 2018
41747 112608