TM 9-4120-402-14
5-32. COMPRESSOR (B1). - continued
(11)
After removal of a bad compressor from the refrigeration system, remove all external tubing and tip the
compressor toward the discharge port to drain sample of oil into a clear glass container.
WARNING
Avoid inhaling fumes and bums from any acid formed by bum out of oil and refrigerant.
(12) If the oil is clean and clear, and does not have a burnt acid smell, the compressor did not fail because
of motor burn out. If a burn out is not indicated, proceed to g.
NOTE
You must clean the entire refrigeration system after a bum out has occurred, since contaminants
will have been carried to many corners and restrictions in the piping and fittings. These
contaminants will soon mix with new refrigerant gas and compressor oil to cause repeated burn
outs.
(13) If the oil is black, contains sludge, and has a burnt acid odor, the compressor failed because of motor
burn out and the system must be flushed. (See paragraph 5-14.)
Figure 5-25. Compressor Replaceable Items
c.
Repair.
(1)
Heater replacement:
(a)
Check to see that covers have been removed during access and testing.
(b)
Tag and disconnect two heater leads from junction box terminals.
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