TM 9-4120-408-14
Table 2-2. Operator Preventive Maintenance Checks and Services
for Air Conditioner: Split Pack, 30,000 BTUH, 28VDC
Location
Item
Item To Be
Not Fully
No
Interval
Check/Service
Procedure
Mission Capable If:
Control Module
Assembly
1
BEFORE
Control Panel
Inspect top cover for
Top cover is missing,
Top Cover
damage, cracks, holes,
cracked, or has
missing or damaged EMI
holes. EMI gasket is
gasket, or missing or
missing or damaged.
damaged mounting hardware.
Mounting hardware is
missing or damaged.
2
BEFORE
Control Module
Inspect housing for dents,
Housing is cracked or
Housing
cracks, or holes.
has holes.
3
BEFORE
Switch Knobs
Inspect switch knobs for
Switch knobs are
damage and free operation.
damaged or bind.
4
BEFORE
Light Emitting
Inspect for damaged or
Any diode assembly is
Diode Assemblies missing assemblies.
damaged or missing.
5
BEFORE
Wiring Harness
Inspect for missing or
Damaged or missing
Connectors
damaged wiring harness
wiring harness
connectors.
connectors.
CAUTION
Do not damage temperature capillary tube while performing PMCS. Equipment failure and
damage may result from damaged temperature capillary tube.
6
BEFORE
Temperature
Inspect temperature sensor
Damaged, cracked, or
Sensor
for damage, cracks, or
missing temperature
holes. Inspect for damaged
sensor. Damaged or
or missing mounting clamps
missing mounting
and mounting hardware.
hardware.
7
BEFORE
Temperature
Inspect temperature port
Temperature sensor
Sensor Port Seal
seal for cracks, holes, or
port seal is cracked
missing sealant.
or missing.
Assembly
8
BEFORE
Lifting Rings
Inspect lifting rings and
Lifting rings are
spring clips for damage or
damaged or missing.
missing mounting hardware.
Damaged or missing
mounting hardware.
9
BEFORE
Inspect housing for dents,
Housing is cracked or
Housing
cracks, or holes.
has holes.
2-8
