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TM 55-1905-220-14-8
4-5. GENERAL (Continued).
SYMPTOM INDEX (Continued)
EQUIPMENT
MALFUNCTION
TABLE
Lube Oil Transfer
Pump does not deliver or delivers
Hand Pump
below rated capacity
Evidence of excessive leakage
Pump is excessively noisy and
vibrates in operation - turns
hard, or binds
Air Conditioner
Abnormal operating pressures/
temperatures
High head pressure
Low head pressure
High suction pressure
Low suction pressure
Compressor crankcase cold
High crankcase temperature
Erratic operation
Compressor will not start
Compressor short cycles or high
pressure cut-out
Compressor short cycles or low
pressure cut-out
Compressor runs continuously
Lubrication troubles
Oil does not return to crankcase
Lubrication troubles (Continued)
Low oil pressure or no oil
pressure
Compressor cuts out on low oil
pressure
System noises
Compressor noise
Pipe rattles
4-9-M2
Hissing
4-9-M3
Capacity control troubles
Compressor will not unload
Compressor will not load
Any one cylinder will not unload
Any one cylinder will not load
Compressor noise varying with
unloading
Rapid unloading cycling
Cooling coil troubles
Loud hissing at thermal expansion
valve
4-5


 


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