Bunn HC-2 HC-3 Operating & Service Manual page 9

Bunn hc-2 hc-3
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TROUBLESHOOTING (cont.)
PROBLEM
Dripping from dispense tip
Water flows into tank continuously
PROBABLE CAUSE
1. Lime build-up
CAUTION - Tank and tank compo-
nents should be delimed regularly
depending on local water condi-
tions. Excessive mineral build-up
on stainless steel surfaces can
initiate corrosive reactions result-
ing in serious leaks.
2. Dispense solenoid valve
(Hot or Cold)
1. Level control board and probe
2. Solenoid valve (Inlet)
3. Overflow Protection Switch
9
REMEDY
Inspect the tank assembly for
excessive lime deposits. Delime as
required.
Remove the dispense solenoid
valve and clear any obstructions.
Rebuild or replace the valve if
necessary. See page 30 or 31
Refer to Service - Level Control
Board and Probe for testing
procedures. See page 26
Refer to Service - Solenoid Valve
(Inlet) for testing procedures. See
page 32
Refer to Service - Overflow
Protection Switch for testing
procedures. See page 28
27591 031597

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