TM 9-4120-399-14
Table 4-2. Unit Preventive Maintenance Checks and Services (PMCS).
Item To Be
Item
Interval
Procedure
Inspected
No.
M
Q
A
Remove filter per para. 4-23 and
Filter,
3
thoroughly clean.
Air Conditioning
Inspect for missing or damaged
Information
4
plates.
Plates
Clean dirty plates, using a clean cloth
and clean water with mild soap.
Check that diffuse is in place and that
Heater
5
no hardware is loose or missing.
Diffuser
Remove top panel per para. 3-4.
Thermostat
6
Cutout and
Remove conditioned air discharge guard
Heater Elements
per para. 3-5.
Check that thermostat is in place and
that mounting hardware is not loose or
missing.
Inspect thermostat and heater element
leads for cracked or burned insulation
and for loose connections.
Check heating elements for obvious
damage.
Remove conditioned air discharge guard
Terminal Board
7
per para. 3-5.
Inspect terminal board for loose or
missing hardware.
Check that terminal board is not cracked
or broken.
Remove top panel per para. 3-4.
Evaporator Fan
8
Assembly
Inspect for loose or missing hardware.
4-19
