P24AL & P34AL Service Manual
TROUBLESHOOTING
12/2016
8-3
Symptom: Machine Stopped (con’t)
Possible Cause
Possible Remedy
High/Low pressure safety switch (1PS or 4PS)
tripped (optional)
If the machine stops by low pressure cutout, the
switch will reset automatically when the
pressure raises to the “cut-in” setting. Check
thaw gas valve (18) to make sure it opens
during harvest time. Check Liquid feed valve
(20) to make sure it is feeding during a freeze.
If the machine stops by high pressure cutout,
the switch will have to be manually reset after
the pressure drops below the “cut-in” setting.
Check the head pressure during the next freeze
cycle.
Low oil pressure tripped (OPS) located on
compressor
Manually reset the switch after the switch
heater cools. Check the crankcase oil level
(1/4-3/4 full). Add oil if below 1/4 glass before
attempting to restart the machine.
Restart the machine and check net oil pressure
(net oil pressure = oil pump line pressure
minus crankcase suction pressure).
Net oil pressure range:
Mycom = 17-28 psig
Vilter = 35-50 psig
Defective control panel component such as
1PB, 1SS, 1M contact, 2TR
See Figure 6-3, Wiring Schematic, and check
for open circuit. Refer to Figures 6-1 and 6-2,
Control Panel to identify parts. Check for
loose wires. Replace defective part, restart
machine, check power supply, and current
draw.
Motor Starter (2M or 3M) for pump or cutter
motor tripped.
Check for loose connection on all terminals,
reset overload and check amp draw against
breaker rating. Check voltage and current
unbalance, Chapter 3. Replace motor starter if
defective.
Summary of Contents for P-24AL
Page 1: ...12 2016 P 24AL P 34AL TUBE ICE MACHINE Service Manual 5000 ...
Page 10: ...P24AL P34AL Service Manual TABLE OF CONTENTS 12 2016 vi ...
Page 15: ...P24AL P34AL Service Manual INTRODUCTION 12 2016 1 5 Figure 1 2 P24AL Right Side ...
Page 16: ...P24AL P34AL Service Manual INTRODUCTION 12 2016 1 6 Figure 1 3 P24AL Back Side ...
Page 17: ...P24AL P34AL Service Manual INTRODUCTION 12 2016 1 7 Figure 1 4 P24AL Left Side ...
Page 18: ...P24AL P34AL Service Manual INTRODUCTION 12 2016 1 8 Figure 1 5 P34AL Front Side Control Panel ...
Page 19: ...P24AL P34AL Service Manual INTRODUCTION 12 2016 1 9 Figure 1 6 P34AL Right Side ...
Page 20: ...P24AL P34AL Service Manual INTRODUCTION 12 2016 1 10 Figure 1 7 P34AL Back Side ...
Page 21: ...P24AL P34AL Service Manual INTRODUCTION 12 2016 1 11 Figure 1 8 P34AL Left Side ...
Page 22: ...P24AL P34AL Service Manual INTRODUCTION 12 2016 1 12 ...
Page 62: ...P24AL P34AL Service Manual START UP OPERATION 12 2016 5 8 ...
Page 84: ...P24A P34A Service Manual TROUBLESHOOTING 12 2016 8 12 ...
Page 110: ...P24AL P34AL Service Manual SERVICING OPERATIONS 12 2016 9 26 ...
Page 126: ...P24AL P34AL Service Manual TABLES CHARTS 12 16 16 11 8 ...
Page 130: ...P24AL P34AL Service Manual INDEX 12 2016 12 4 ...
Page 131: ...Appendix A ...
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