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8-2
TROUBLESHOOTING
Symptom: Machine Stopped
Power failure or interruption
Circuit breaker (CB4) for control circuit
tripped
Compressor motor starter overload (1MOL)
tripped
Water pump, cutter motor, tower fan, tower
pump, conveyor motor, overload tripped
Freezer water pump motor overload (2MOL)
tripped
Cutter motor overload (3MOL) tripped
Bin level control (optional) open
12/17/12
Possible Cause
Possible Remedy
Check fused disconnect or circuit breaker
supplying power to the machine. If power has
been off, make sure the crankcase heater is
energized and there is no liquid refrigerant in
the compressor crankcase prior to restarting the
compressor. If ice is in the freezer, initiate a
manual harvest.
Check compressor crankcase heater, coils of
relays, contactors, starters, solenoid valves, and
thawing timer for a ground. Repair or replace
any defective part and reset circuit breaker.
Make sure there is no liquid refrigerant in the
compressor crankcase prior to restarting the
machine.
Check for a loose connection on all motor
starter and motor terminals which could cause
excessive amp draw.
restart the machine, check amperage, power
supply, and head pressure. (Check TR in part
wind starts only).
Check for loose connection on all terminals
which could cause excessive amp draw. Reset
the overload and manually run that particular
motor to check actual voltage and amperage
against motor rating.
Check for loose terminal connections and/or
defective breaker (CB2), reset the overload and
start the pump by turning the selector switch
(1SS) to "Hand". Check voltage and amperage
against motor rating. Confirm proper rotation.
Check for loose terminal connections and
blown fuse, reset the overload. Clear all ice
that may have jammed cutter. Turn the selector
switch (1SS) to "Hand" and push the "Manual
Harvest" button.
Check voltage and amps
against motor rating. If tripping repeats but ice
is not jammed, check the gear reducer for
resistance, cutter bearings for wear, drive gear
and ring gear for proper engagement, and
reducer motor for defect or single phasing.
Adjust or replace control as required. If bin
level control is not used, make sure jumper
wire #8 and #9is installed at of the terminal
block.
P24A & P34A Service Manual
Reset overload and
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