TABLE 4-1. ORGANIZATIONAL PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - continued

TM5-4120-347-14

Para

Item

Item To Be

Ref.

No.

Inspected/Serviced

Procedures

Compressed air used for cleaning purposes will

not exceed 30 psi (2.1 Kg (cm2)

4-44

a. Blow accumulated dust and dirt out of the air passages

Evaporator Coil

in the evaporator coil using compressed air or the

discharge side of a portable vacuum cleaner. Blow

from front to back in the opposite direction from

operational airflow.

b. Inspect coil for obvious damage and all mounting

hardware for tightness and security.

4-42

a. Wipe or vacuum any remaining dust or dirt from the

Heating Elements

heating elements, the heater thermostat, and all other

components and surfaces in the area.

NOTE

Use a clean, dry cloth (or one slightly

moistened with water) for all wiping

operations, NEVER use an oily or greasy

cloth, any oily residue left on any surface will

attract and accumulate much more dust and

dirt than dry surfaces.

b. Inspect heating elements and thermostat for obvious

damage, and all mounting hardware for tightness and

security.

c. Inspect wiring harness for damage or chafing and all

electrical connections for tightness.

d. Install the mist eliminator and the top front cover.

4-21

Fresh Air Ventilation

a. Remove, clean, inspect, and service.

b. Discard and obtain replacement, if damaged.

Guard

c. Reinstall.

4-21

a. Remove, clean, inspect, and repair guard, as

Condenser Air Inlet Guard

necessary.

b. Place guard aside for the present and reinstall after

item 14.

c. Remove, clean and inspect the top rear cover. Set aside

and reinstall after item 14.

Compressed air used for cleaning purposes

will not exceed 30 psi (2.1 Kg (cm2)

4-46

Condenser Coil

a. Blow dust and dirt from the condenser coil in the same

manner as used for the evaporator coil in item 7. In this

case, blow from the inside for reverse airflow direction.

b. Inspect coil for obvious damage, and all mounting

hardware for tightness and security.

4-18