TM 9-4120-388-14
Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) (Cont.)
ITEM TO BE
ITEM
lNSPECTED/SERVICED
PROCEDURES
NO.
Remove, clean, and inspect
16
Guard
Remove, clean, and inspect
17
a.
18
Inspect coil for obvious damage, and all mounting
b.
hardware for tightness and security.
Wipe or vacuum all dust and dirt from fan and motor,
a.
Condenser Fan and
19
and all other components and surfaces in the
Fan Drive Motor
immediate area.
Inspect the fan for damage or bent blades, the motor
b.
for signs of overheating, and all mounting hardware for
tightness and security.
Inspect the wiring harness for damage or chafing, and
c.
all electrical connections for tightness.
Be sure the mode selector switch is in the OFF position
20
a.
Operation Checks
and reconnect input power
CAUTION
Do not check operation in COOL. mode until after input
power has been reconnected for a sufficient time to elim-
nate any danger of liquid refrigerant accumulation in the
compressor. Except in extremely cold conditions, if input
power has been disconnected for a period of less than
six hours, an equal warm-up period should be allowed
If the disconnected period has been more than SIx
hours, a full six hour warm-up period is necessary
b. Be sure that the fabric cover is rolled up and secured
Adjust conditioner air intake and outlet louvers to the
c.
full open position.
Adjust fresh air damper to full closed position.
d
4-28