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(3) Check the expansion device and clean or
replace it. Replace sight glass (para 5-12).
(4) Remove the burned out compressor and
install the replacement.
(5) Evacuate the system.
(6) Recharge the system. and put in opera-
tion.
(7) Check pressure drop across suction de-
hydrator after one-hour operation. Change if nec-
essary and evacuate system (para 6-5).
(8) After 8 to 24 hours’ operation, change
suction dehydrator, check odor and color of oil
test with test kit. Evacuate system (para 6-5).
(9) After 14 days of operation, check color
and acidity of oil. If required, change dehydra-
tors. Before cleanup is complete, it is essential
that oil is clean and no acid is present.
Note. The new compressor should not be used for
pulling a vacuum. Pull a high vacuum (less than 500
microns) for several hours. Allow the system to stand
several hours to be sure the vacuum is maintained.
6-13
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