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SECTION VII
SERVICE DIAGNOSIS
The Service Diagnosis Section is for use in aiding
the servicemen in diagnosing a particular problem
for pin-pointing the area in which the problems
lines, thus an ever available reference for proper
corrective action.
The following chart lists corrective actions for the
causes of known symptoms of certain problems
that can occur in the ice making refrigerarion
system.
SYMPTON
POSSYBLE CAUSE
CORRECTION
Lo-refrigerant press.
Incorrect refrigerant
Add refrigerant to raise suction
suction pressure.
pressure.
Raise head press. Control setting.
Moisture in system.
Check moisture indicator and
Overcharge of oil in system.
remove charge and drier.
Replace & recharge the system.
Not enough refrigerant.
Check for refrigerant leak.
Lo-water level.
Intermittent water supply
Water shut-off valve closed.
or too low water pressure.
Check and clean water strainer.
The compressor runs but the
Drive motor gear reducer
Check. Repair or replace.
unit does not make ice.
inoperative.
V-belt loose or broken
Check. Repair or replace.
Key may sheared.
Check. Repair or replace.
Gear reducer with one
Check. Repair or replace.
gear stripped-gff.
Pulley loose on motor shaft.
Water not entering reservoir.
Check and clean. Water float
valve to be cleaned.
Excessive
Hi-pressure control cut-off
Check cooling water at
Hi-pressure
unit operation.
condenser. Condenser tube
clogged-up. Water regulating
valve to be re-adjusted.
1. ICE MAKING - REFRIGERATION SYSTEM
