P24AL & P34AL Service Manual
TROUBLESHOOTING
12/2016
8-9
Symptom: Low discharge pressure (check gage accuracy)
Possible Cause
Possible Remedy
Fan cycling switch out of adjustment or
defective
Check adjustment. Replace if defective.
Compressor running unloaded or not pumping
efficiently
Check compressor motor amp. If the
compressor is running unloaded, the amperage
will only be approximately 60% of normal amp
draw (FLA). Refer to the compressor manual.
Ambient temperature low and prevailing winds
blowing through tower
Shield tower from prevailing winds to prevent
excessive cooling. Install an indoor sump.
Too much cold water circulating through
condenser
Install a water-regulating valve in the water
line form the condenser and control flow by
receiver pressure.
Thaw gas valve #18 leaking through
Make sure manual opening stem is in the
automatic (screwed in) position. Repair or
replace defective parts.
Symptom: High suction pressure (check gage accuracy)
Possible Cause
Possible Remedy
Compressor running unloaded or not pumping
efficiently
Check compressor motor amp. If the
compressor is running unloaded, the amperage
will only be approximately 60% of normal amp
draw. Refer to the compressor manual.
Thaw gas valve #18 leaking through
Make sure manual opening stem is in the
automatic (screwed in) position. Repair or
replace defective parts.
Suction Pressure to low
Adjust suction regulator valve
Defective gage
Check pressure with accurate gage and replace
as necessary.
Symptom: Compressor running unloaded during freeze (dedicated compressor only)
Possible Cause
Possible Remedy
Low oil pressure
Check compressor net oil pressure.
Net oil pressure = oil pressure gage reading
less suction pressure.
Mycom = 17-28 psig
Vilter = 35-50 psig.
Refer to the compressor manual for “Oil
Pressure Adjustment”.
Unloader solenoid valve open
Check solenoid coil to make sure it is not
energized. If valve is stuck open, replace
valve.
Unloader mechanism not working properly
Refer to compressor manual. Mycom
compressor can be loaded manually.
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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