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62-11637
9–4
9.3
REFRIGERATION / TEMPERATURE CONTROL
Excessive charging rate (evi-
denced by need for frequent filling
or constant high charging amper-
age)
Regulator faulty
Alternator noisy
Alternator belt loose/broken/misaligned
Loose pulley
Worn bearings
Indication/Trouble
Possible Causes
Action / Reference
9.3.1
Unit Will Not Cool
Compressor malfunction
Compressor drive defective
Compressor defective
Refrigeration system
A defrost cycle did not terminate. Check DTT
Abnormal pressure
Solenoid valve malfunction
Clutch failure
9.3.2
Unit Runs But Has Insufficient Cooling
Compressor
Compressor internal damage
Unloader malfunction
Refrigeration system
Abnormal pressure
Unloader malfunction
Expansion valve malfunction
No or restricted evaporator airflow
Suction Modulation Valve malfunction
Check system for noncondensibles
Clutch failure
9.3.3
System Will Not Pump Down
Valve malfunction
SV2 or SV4 not closing
Check valve not closing
Liquid line service valve defective
Replace
Compressor
Compressor internal damage
9.3.4
Unit Operates Long Or Continuously In Cooling
Refrigerated Compartment
Hot Load
Allow time to pull
down
Defective or insufficient refrigerated compartment insula-
tion or air leak
Correct
Refrigeration system
Abnormal pressure
Temperature sensor malfunction
Check system for noncondensibles
Compressor
Compressor internal damage
Содержание Transicold X4 7300
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