TM 9-4120-385-14
Table 4-1. UNIT PREVENTIVE M A I N T E N A N C E C H E C K S A N D S E R V I C E S C o n t i n u e d
FOR READINESS
PROCEDURES
INTERVAL
EQUIPMENT IS
(CHECK/AND HAVE
REPAIRED AND ADJUSTED
ITEM TO BE
M
W
Q
AVAILABLE IF:
AS NECESSARY)
INSPECTED
No.
Bound, bent or
WARNING
Fans and
17
cracked
Housing
High voltage can kill.
Disconnect power supply.
Check freedom of movement of
impellers. Thoroughly clean
impellers.
No continuity,
Check that motor is clean. Turn
18
excessive noise,
shaft and check for binding,
Condenser Motor
missing or broken
rough movement, and/or noise
mounting
indicative of defective bearings.
brackets
Check for and repair damaged
wiring or insulation. Check for
and replace missing hardware.
Repair as necessary.
Z
No continuity,
WARNING
Heater
19
missing
Thermostat
High voltage can kill.
(Switch S3)
Make sure that power supply
to unit is disconnected.
Check heater thermostatic
switch for cleanliness, lack of
obstruction between switch and
heaters, security of terminals
and proper location of wiring.'
Check for damage to wiring and
insulation. Check for and replace
missing hardware.
4-12
