Bunn HC-2 HC-3 Operating & Service Manual page 8

TROUBLESHOOTING (cont.)
PROBLEM
Product will not dispense (cont.)
Water is not hot
Spitting or excessive steaming
PROBABLE CAUSE
9. Water strainer
10. 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.
1. Limit thermostat
CAUTION - Do not eliminate or
bypass limit thermostat. Use only
BOM replacement part
#29329.1000
2. Control thermostat (mechanical
or electronic)
3. Tank Heater
4. Tank heater switch
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. Control thermostat (mechanical
or electronic)
8
REMEDY
(A) Direction of flow arrow must
be pointing towards dispenser.
(B) Remove the flow control and
check for obstructions. Clear or
replace.
Inspect the tank assembly for
excessive lime deposits. Delime as
required.
Refer to Service - Limit Thermo-
stat for testing procedures. See
page 27
Refer to Service - Control Thermo-
stat for testing procedures. See
page 16
Refer to Service - Tank Heater for
testing procedures. See page 33
Refer to Service - Tank Heater
Switch for testing procedures. See
page 34
Inspect tank assembly for exces-
sive lime deposits. Delime as
required.
Refer to Service - Control Thermo-
stat for testing procedures. See
page 16
27591 061500