Section II OPERATOR 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. The Preventive Maintenance Checks and Services table lists the
inspections and care of the air conditioner required to keep it in good operating condition.
a. Before 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 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 operational functions. Perform
c. 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 and with proper equipment.
Report any deficiencies using the proper forms. See DA Pamphlet 738-750.
e. Service Intervals. The interval column of the PMCS table tells when to do a certain check or service.
f. Procedure Column. The procedure column of the PMCS table tells how to do the required check and
g. Reporting and Correcting Degiciencies. If the air conditioner does not perform as required, refer to Chapter
3 under Troubleshooting for possible problems. Report any malfunctions
on DA Form 2404,
DA Pamphlet 738-750.
h. Equipment is Not Ready/Available If column . States that the air conditioner cannot be used under these
i. Special Instructions. 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