Section II OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES

TM 5-4120-393-14

2-4. General. Operator 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 are

described in table 2-1.

a. Before You Operate. Always keep in mind the CAUTIONS and WARNINGS. Perform your before (B) PMCS.

b. While You Operate. Always keep in mind the CAUTIONS and WARNINGS. Perform your during (D) PMCS.

c. After You Operate. Be sure to perform your after (A) PMCS.

d. If Your Equipment Falls To Operate. See para 3-2 and troubleshoot with proper equipment.

Report any

deficiencies using the proper forms. See DA PAM 738-750 for instructions.

2-5. Weekly. Perform weekly as well as before operations PMCS if:

a. You are the assigned operator and have not operated the item since the last weekly.

b. You are operating the item for the first time.

2-3