TM 9-4120-385-14
Table 4-1. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES - Continued
FOR READINESS
PROCEDURES
REPORTING
INTERVAL
EQUIPMENT IS
(CHECK/AND HAVE
NOT READY/
REPAIRED AND ADJUSTED
lTEM TO BE
M
W
Q
AVAILABLE IF:
AS NECESSARY)
INSPECTED
No.
Missing, cracked,
WARNING
Heater
20
no continuity
Elements
If unit has been used to provide
heat, allow heater elements to cool
to room temperature before
touching to avoid severe burns.
Check heater elements for
cleanliness, security of electrical
connections, and for free
airflow over elements. Inspect
bracket for loose, damaged, or
missing floating nuts or rivets
and for other damage. Inspect
support and heater clamps for
bends, cracks, breaks, hole
damage, or other damage. Repair
as necessary.
Cracked
Inspect coil for leaks, bent fins,
21
Evaporator Coil
mounting
and tube for damage. Clean as
brackets, leaks,
required.
bent fins and/or
tube damage
Cracked
Remove condenser guard.
22
Condenser Coil
mounting
Inspect coil for damage.
brackets, leaks,
Clean as required.
bent fins and/or
tube damage
Cracked, broken,
Sight Glass
Check moisture indicator after
23
missing
air conditioner has been running
Liquid Indicator
for 15 minutes. Center should be
clear with no bubbles. Green
indicates no moisture present. If
color is yellow/green or yellow,
moisture is present in system.
Notify Direct Support
Maintenance. Inspect sight glass
for cracks or leakage. If damaged,
notify Direct Support Maintenance
4-13
