TM 9-4120-357-14
Table 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
Q-Quarterly
Total man-hours required: 4.7
Sequence
Item To Be Inspected
Work time
Number
Procedure
(man-hours)
CAUTION
When using compressed air, keep nozzle at least eight
inches (20.3 CM) from coil. If vacuum cleaning equipment
is not available, remove the front access panel and use
compressed air from underside of coil to blow out dirt.
Use a soft brush if necessary to dislodge impacted dirt.
Inspect for bent or crushed fins and if necessary,
straighten with a wooden or plastic blade.
8
CONDENSER FAN AND GUARD
0.2
WARNING
Dry cleaning solvent, P-D-680, used to clean parts, is
potentially dangerous to personnel and property. Avoid
repeated and prolonged breathing of vapors and skin
contact with the liquid. Do not use near open flame or
excessive heat. Flash point of solvent is 100 to 138
F
F
(38 to 590C).
C
Inspect for damage. Replace if damaged or broken beyond
repair. Clean by brushing or wiping with a cloth saturated
in dry cleaning solvent (Fed Spec P-D-680).
9
CONDENSER FAN COVER.
0.2
Clean with detergent solution. Inspect for tears, punctures
and damaged zipper, repair or replace damaged cover.
Lubricate zipper, if necessary, with wax stick, (candle or
crayon or spray-lubricant.)
10
CONTROLS
0.2
Check for proper operation, looseness or damage. Tighten or
replace as necessary.
11
WIRING AND CONNECTORS
0.3
Remove access panel by unscrewing four panel fastener
screws and lifting out panel. Remove junction box front
cover by unscrewing four panel fastener screws. Inspect
wiring for scuffs, breaks or missing insulation. Check
connectors for tightness. Install junction box cover, and
secure with four captive panel mounting screws. Install
front panel, and secure with four panel mounting screws.
4-6
