Specifications

120 Part Number STH12 9/10
Refrigeration System
Until repairs can be made on unit with no Ice Bank,
push Refrigeration and Agitator Switch to the OFF
position and ice down Bath using ice from Ice Maker.
Qualifier
Probable
Cause
Corrective Action
Warm drinks (carbonated water temperature over 40°F [5°C])
Compressor
operates but no ice
present at water
bath.
Water Bath
Feeder Valve
inoperative (not
enough water in
bath).
Remove tope cover from Remote
Refrigeration Unit. Verify if water level
is considerably below Stand Pipe. If
so, Water Make-Up valve is
inoperative. Remove, disassemble
and clean out valve. Replace, refill
Bath and allow carbonator to cycle
while inspecting valve to ensure
proper operation. Replace if
necessary.
Water leak
inside bath.
Remove top cover from Remote
Refrigeration Unit. Inspect Water Bath
at Stand Pipe. If considerable water is
observed running over and out the
drain, there is a water leak inside
Bath. The leak causes the Ice Bank to
melt as fast as it’s formed. Drain Bath
to located the leak, repair and refill
bath.
Fan or Motor
inoperative (air
cooled units).
Examine Fan and Motor on Air Cooled
Units at Condenser. If either are found
to be inoperative while compressor is
running, replace inoperative fan or
motor.
Caution: Inoperative Fan and Motor
can cause short cycling of
compressor.
Compressor
operates but no ice
present at water
bath.
Condenser
restricted.
For Air Cooled Units, clean the
Condenser removing all dust and lint.
On Water Cooled Units: Using a
thermometer verify temperature at
water discharge line. If operating
outside of the 95°F (35°C) to 105°F
(41°C) range, adjust Water Modulating
valve, replace.
Caution: Restricted Condenser can
cause short cycling of compressor.
Excessively
warm room.
Verify the Refrigeration Unit is
operating in a well ventilated area and
that there are no obstructions blocking
Condenser. If so, remove obstructions
if inoperative.
Lack of
Refrigerant
Charge.
Examine Sight Glass. If bubbles
appear while compressor is operating
system is low on charge. Refer to
Serial Plate for proper refrigeration
charge.
Defective
Expansion
valve.
If no bubbles appear in Sight Glass
then examine suction line, frost on the
suction line is a sign of defective
Expansion valve. Replace if
inoperative.