Section III PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
Systematic, periodic, preventive maintenance checks, and services (PMCS) are essential to insure that the air conditioner
is ready for operation in any mode at all times. The purpose of a preventive maintenance program is to discover and
correct defects and deficiencies before they can cause serious damage or complete failure of the equipment. Any
effective preventive maintenance program must begin with the training of operators to report all unusual conditions noted
during daily checks or actual operation to organizational maintenance. All defects and deficiencies discovered during
maintenance inspections must be recorded, together with corrective action taken, on DA Form 2404 (Equipment
Inspection and Maintenance Worksheet).
3-8. INSPECTION AND SERVICE SCHEDULING
a. A schedule for organizational preventive maintenance inspection and service should be established immediately
after installation of the air conditioner. A quarterly interval, equal to three calendar months or 250 hours of operation,
whichever occurs first, is recommended for usual operating conditions. When operating under unusual conditions, such
as a very dusty or sandy environment, it may be necessary to reduce the interval to monthly or even less if conditions are
b. Table 3-1 lists the organizational preventive maintenance checks and services that should be performed at
quarterly (or otherwise established) intervals. The PMCS items in the table have been arranged and numbered in a
logical sequence to provide for greater personnel efficiency and least amount of required maintenance downtime.
Check all air filters weekly for air flow blockage.
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