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TM 9-4120-389-14
(6)
Purge the system with nitrogen per para. 5-4.
(7)
Debraze the tubing sufficient to clear the compressor (See para. 5-5).
(8)
Remove four locknuts and washers from cap screws.
(9)
Carefully maneuver compressor from unit. Leave spacers andresilient mounts in place for
installation.
WARNING
If compressor burn out is suspected, use care when handling compressor to avoid
touching compressor sludge. Acid in sludge can cause burns.
(10)
Check to see if motor burn out is indicated.
h.
Servicing system after compressor motor burnout
WARNING
If compressor burn out is suspected, use care when handling compressor to avoid
touching compressor sludge. Acid in sludge can cause burns.
(1)
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 burns from any acid formed by burn out of oil and
refrigerant.
(2)
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 installation procedures.
(3)
If the oil is black, contains sludge, and has a burnt acid odor, the compressor failed because of
motor burn out.
5-72
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