PREVENTATIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

TM 9-4120-428-14

OPERATOR'S MAINTENANCE

AIR CONDITIONER, HORIZONTAL, COMPACT

(NSN 4120-01-502-1319)

PREVENTATIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

GENERAL

Preventative Maintenance Checks and Services (PMCS) are essential to the overall 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 that can be accomplished from the outside of the

cabinet. The PMCS table lists the inspections for and care of the air conditioner required to keep it in good operating

condition.

PREVENTATIVE MAINTENANCE CHECKS AND SERVICES

Before Operation

Always observe the WARNINGS and CAUTIONS contained in this technical manual. Always read the plates installed on the

equipment that are associated with the functions you are about to perform. Perform the before (B) PMCS checks from Table

During Operation

Always observe the WARNINGS and CAUTIONS contained in this technical manual and the plates that are installed o n the

on the equipment that are associated with certain operational functions. Perform the during (D) PMCS checks from Table 1.

After Operation

Perform the after (A) PMCS checks from Table 1.

When Equipment Fails To Operate

Troubleshoot within your capabilities and with proper equipment. Report any deficiencies using DA PAM 738-750.

Service Interval Column

The Interval column of PMCS table (Table 1) explains when to complete a service or a check.

Procedure Column

The procedure column of the PMCS table (Table 1) explains how a required service or check should be performed.

Reporting and Correcting Deficiencies

If the air conditioner does not perform as it should, refer to Chapter 3, Operator Troubleshooting Procedures. Report any

malfunctions or failures on DA Form 2404 or refer to DA Form 738-750.

When Equipment is Not Ready/Not Available

This column of the PMCS table (Table 1) explains when the air conditioner cannot be used.

NOTE

Within designated intervals, these checks are to be performed in the order listed. If the equipment must be kept in continuous

operation, service and check only those items that can be serviced and checked without disturbing operation. Make complete

services and checks at a time when equipment can be shut down.

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