ARMY TM 9-4120-380-14
NAVY EE-000-BA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-21
Table 4-1. Unit Preventive Maintenance Checks and Services (PMCS) Quarterly Schedule
Disconnect input power before disassembly of the air conditioner for PMCS to prevent
dangerous, possible fatal, electrical shock.
Procedure
NottFullly Mission
No Fu ly Mission
Item to Check/Service
Item
Procedure
Interval
Item to Check/Service
Capable if::
Capable if
INo.
tem
No.
1
Quarterly
Return Air Filter
a. Remove, dean, and Inspect filter
Filter is dirty.
b. Wash filter in mild detergent
and water solution. Rinse
thoroughly In clean water. Shake
out excess water. Spray filter
with air filter oil.
c.
Inspect filter for damage. Re-
Filter is damaged
place if damaged.
2
Quarterly
Control Box Assembly
b. Check operation of controls for
Controls are stiff or
stiffness or binding
bind.
c. Inspect wiring harness for dam-
Wiring harness Is dam-
age or chafing and all electrical
aged or chafed.
connections for tightness.
d. Repair control box (paragraph
Control box is dam-
aged.
3
Quarterly
b. Check fan for cracked or broken
Blades are cracked or
blades and all mounting
broken. Mounting hard-
hardware for tightness and
ware is loose.
Security. Replace if damaged.
Fan is damaged
4-14