Table 3-1. ORGANIZATIONAL PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) (Continued)

TM 5-4120-359-14

Table 3-1. ORGANIZATIONAL PREVENTIVE MAINTENANCE

CHECKS AND SERVICES (PMCS) (cont.)

Item

Item To Be

No.

Inspected/Serviced

Procedures

Operational Checks

a. Be sure the mode selector switch is in the OFF position.

CAUTION

If military operational considerations allow the time, it will

help extend the life of the compressor if the air conditioner

is not turned on for its check of operation in the COOL

mode until after a sufficient time to eliminate any danger of

liquid refrigerant accumulation in the compressor. Except

in extremely cold conditions, if input power has been

disconnected for a period of less than six hours, an equal

warm-up period is desirable. If the disconnected period has

been more than six hours, a full six-hour warm-up period is

recommended.

b. Perform functional check of the air conditioner in all operational modes in

accordance with the instructions in paragraph 2-4.

Run Indicator Light

a. Light should be illuminated in all operating modes.

b. Light may also be checked with MODE SELECTOR SWITCH in OFF

position. Push in. Light should light.

c. Replace bulb if necessary. (See para 3-30.)

3-18 Change 1