PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
Preventive maintenance checks and services (PMCS) are essential to the efficient operation of the air
conditioner and to prevent possible damage that "might occur through neglect or failure to observe warning
symptoms in a timely manner. Checks and services performed by operators are limited to those functions which
can be accomplished from the outside of the cabinet.
a. Before Your Operate. Always keep in mind and observe the WARNINGS and CAUTIONS contained in this
technical manual and plates installed on the equipment that are associated with the functions you are about to
perform. Perform your before (B) PMCS from Table 2-1.
b. While You Operate. Always keep in mind and observe the WARNINGS and CAUTIONS contained in this
technical manual and plates installed on the equipment that are associated with operation functions. Perform
your during (D) PMCS from Table 2-1.
After You Operate. Be sure to perform your after (A) PMCS from Table 2-1.
d. If Your Equipment Fails to Operate. Troubleshoot within your capabilities. Report any deficiencies as
appropriate using the proper form as specified in TM 38-750.
Within designated intervals, these checks are to be performed in the order listed.
If the equipment must be kept in continuous operation, check and service only those items that can
be checked and serviced without disturbing operation. Make the complete checks and services
when the equipment can be shut down.