Table 3-1. ORGANIZATIONAL PREVENTIVE MAINTENANCE
CHECKS AND SERVICES (PMCS) (cont.)
Item To Be
a. Be sure the mode selector switch is in the OFF position.
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
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
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