Vogt P-34AL-15, Руководство по обслуживанию

Страница: 77 / 159

P34AL-15 & P34ALOF-15 Service Manual
TROUBLESHOOTING
9/22/05
8-2
Symptom: Machine Stopped
Possible Cause Possible Remedy
Power failure or interruption 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.
Circuit breaker (CB4) for control circuit
tripped 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.
Compressor motor starter overload tripped Check for a loose connection on all motor
starter and motor terminals which could cause
excessive amp draw. Reset overload and
restart the machine, check amperage, power
supply, and head pressure. (Check delay timer
in part wind starts only).
Water pump, cutter motor, conveyor motor,
overload tripped 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.
Freezer water pump motor overload (2MOL)
tripped 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.
Cutter motor overload (3MOL) tripped 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.
Bin level control (optional) open 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.