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Service Diagnosis
REFRIGERATION SYSTEM
SYMPTOM
Unit will not run.
Excessive noise
Excessive vibration.
Making wet ice
Low ice production.
POSSIBLE CAUSE
Blown fuse.
Loose electrical connection.
Switch in OFF position.
Inoperative master switch.
Spout switch cut-out.
Misaligned V-belt.
Gear reducer loose on frame.
Drive motor end-play or worn
bearings.
Ice formation underneath
frictioning against rotating drum.
Surrounding air temperature
4 EC (10 EF)
Under-or-over-charge of refrigerant. Re-charge with proper amount.
Closed AEV.
Faulty compressor valve plate.
Loss of refrigerant,under
or overcharge of refrigerant
Plugged condenser water tubes
Low water level in the reservoir.
Overcharge of oil in system.
Water pump out of operation.
Spray bar clogged.
December 2000
Page 33
MAR101 & MAR121
CORRECTION
Replace fuse and check for cause
of blow fuse.
Check wiring.
Turn switch to ON.
Replace switch.
Check ice chute arrangement.
Align V-belt.
Tighten.
Repair or replace.
Remove blade and melt-up ice
formation. Lower water level to
blade -
correct value.
Correct or move unit to cooled
above
location.
Adjust valve for correct refrigerant
flow.
Repair or replace.
Check and recharge with proper
amount of refrigerant.
Clean condenser.
Check float valve operation.
Check at oil sight glass.
sight glass.
Replace water pump.
Clean spray bar.
Lower to 1/2
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