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TM 5-4120-361-14
Chapter 3
MAINTENANCE INSTRUCTIONS
Section I.
LUBRICATION INSTRUCTIONS
3-1.
Fan Motors.
3-2.
Compressor.
The evaporator and condenser motors
The compressor and compressor motor
are permanently lubricated by the manu-
are fully lubricated by the manufac-
facturer and require no additional
turer and require no additional lubrica-
lubrication.
tion.
3-3.
General.
Section II.
This section contains information
that is useful in diagnosing and
correcting troubles which cause unsat-
isfactory operation or failure of the
air conditioner.
3-4.
Operator’s Troubleshooting Chart.
Troubleshooting procedures for opera-
tor-crew are listed in table 3-1.
TROUBLESHOOTING
followed by a list of tests or inspec-
tions which will help you to determine
corrective actions to take.
You should
perform the tests/inspections and cor-
rective actions in the order listed.
b.
This manual cannot list all mal-
functions that may occur, nor all tests
or inspections and corrective actions.
If a malfunction is not listed or is not
corrected by listed corrective actions,
notify your supervisor.
a.
This section contains trouble-
c. The table lists the common mal-
shooting information for locating and
functions which you may find during the
correcting most of the operating
operation or maintenance of the air con-
troubles which may develop in the air
ditioner or its components.
You should
conditioner.
Each malfunction for an
perform the tests/inspections and cor-
individual component, unit, or system is
rective actions in the order listed.
Section III.
MAINTENANCE PROCEDURES.
3-5.
General.
This section contains maintenance
procedures for the operator of the air
conditioner.
Operator maintenance is
limited to inspection and procedures
that can be accomplished without the aid
of servicing tools.
Any indications of
need for servicing resulting from in-
spection are to be reported to organiza-
tional or direct support maintenance.
3-6.
Condenser Fabric Cover.
Inspect condenser fabric cover for
torn places.
Repair minor tears with
waterproof tape.
Report extensive dam-
age to organizational maintenance.
3-7.
Drains.
Inspect condensate water drains, fig-
ure 1-2, for obstructions.
Remove ob-
structions.
Report total blockage to
organizational maintenance.
3-8.
Liquid Sight Indicator.
Wipe refrigerant liquid sight indica-
tor glass, figure 1-2, with a soft,
clean cloth, set controls, figure 2-1,
at COOL-COOLER, operate air conditioner
for 15 minutes, then observe liquid
sight indicator.
Yellow appearance
indicates moisture in system.
Bubbles
or milky flow indicate low refrigerant
charge.
Report presence of these condi-
tions to direct support maintenance.
3-1
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