5 - 3 3 . COMPRESSOR. - continued
If compressor is being removed due to burnout, use care when lifting to avoid
touching compressor sludge. Acid in sludge can cause burns.
To avoid injury to personnel, two people are required to lift compressor.
(7) Carefully lift compressor from unit.
(8) If mounting plate (6) is to be replaced, remove four screws (7) and mounting plate.
(9) Check compressor to see if a motor burnout is indicated.
(a) Tip compressor toward discharge port and drain a small quantity of oil into a clear glass container.
(b) If oil is clean and clear, and does not have a burnt acid smell, the compressor did not fail because of
motor burnout. Install new compressor.
You must clean the entire refrigeration system after a burnout 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.
(c) If oil is black, contains sludge, and has a burnt acid odor, the compressor failed because of motor
burnout. Before installing new compressor, flush refrigerant system. (See paragraph 5-15.)
(10) Install new mounting plate (6), if removed, with four screws (7).
The compressor is supplied with a complete charge of oil. Take care that oil is not
lost when handling and installing compressor.
(11) Carefully lower compressor into unit.
(12) Secure compressor with four screws (1), eight flat washers (4), shouldered washers (5), four flat
washers (3), and nuts (2).
(14) Connect wiring harness connector (P11) to compressor connector (6).