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Figure 4-91.1. Compressor (Models EKP and FGG)
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TM-5-4120-359-14 Air Conditioner Split Package 18 000 BTU/HR Cooling 30 000 BTU/HR Heating 208 Volt 3 Phase 400 Hertz Manual
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COMPRESSOR (Continued) - 506780275
TM 5-4120-359-14
(8) Run leads through the grommet in the compressor junction box.
(9) See tags on the removed heater. Connect heater leads to J10 pins F and G.
(10) If this completes the repair, install terminal box cover.
d. Connector replacement. (Refrigerant system discharge is not required.)
(1) Assuming that the power has been disconnected at the power source, and covers have been removed during
access and testing, proceed as follows.
(2) Remove the retaining hardware from the connector. Pull the connector out of the box to gain access to the
solder connections.
(3) Tag and unsolder wires.
(4) Using tags and wiring diagram (figure 4-3), solder wires to new connector. Remove the tags.
(5) Secure the connector the compressor junction box with screws and lock washers.
e. Compressor replacement
(1) Check to see that the power has been disconnected at the power source, connector plug (P10) was
disconnected and that covers have been removed during access and test, proceed as follows:
(2) Discharge the refrigerant system per paragraph 4-5.
(3) While purging the system with nitrogen, debraze the tubing. (See paragraphs 4-6 and 4-7.)
(4) Remove compressor mounting hardware per paragraph 4-87.
(5) Spring tubing up and out of the way.
WARNING
If compressor burn out is suspected, use care when handling compressor to avoid
touching compressor sludge. Acid in sludge can cause bums.
(6) Carefully slide compressor from housing through left end.
(7) Check the compressor to see if a motor bum out is indicated.
f.
Compressor motor burnout
(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 g.
Change 2 4-181

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