Section II. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
2.2.1 General. Preventive Maintenance Checks and Services are essential to the efficient operation of the FDECU 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 listed in table 2-1. This table lists the
inspections and care of the FDECU required to keep it in good operating condition. The procedures are intended to be
done if the equipment is used periodically during the interval period and not if the equipment is in storage. If the
equipment has been in storage and is to be used, perform the WEEKLY and MONTHLY procedures prior to putting it back
2.2.2 PMCS Procedures. The following paragraphs identify and explain the columns used in the PMCS table.
188.8.131.52 Item No. Column. Numbers in this column are for reference. When completing DA Form 2404 (Equipment
Inspection and Maintenance Worksheet), include the item number for the check/service indicating a fault. Item numbers
also appear in the order that you must do checks and services for the intervals listed.
184.108.40.206 Interval Column. This column tells you when you must do the procedure in the procedure column. BEFORE
procedures must be done before you operate or use the equipment for its intended mission. DURING procedures must
be done during the time you are operating or using the equipment for its intended mission. AFTER procedures must be
done immediately after you have operated or used the equipment.
220.127.116.11 Item to be Checked or Serviced Column. This column provides the location and the item to be checked or
serviced. The item location is underlined.
18.104.22.168 Procedure Column. This column gives the procedure you must do to check or service the item listed in the
Check/ Service column to know if the equipment is ready or available for its intended mission or for operation. You must
do the procedure at the time stated in the interval column.
22.214.171.124 "Not Fully Mission Capable If": Column. Information in this column tells you what faults will keep your
equipment from being capable of performing its primary mission. If you made a check and service procedure that shows
faults listed in this column, do not operate the equipment. Follow standard operating procedures for maintaining the
equipment or reporting equipment failure.
2.2.3 Refrigerant Leaks. Oil is carried with the refrigerant as it flows through the refrigeration system. If a leak develops
in the system, the oil will seep out and soak the copper tubing around the leak or drip and soak or puddle on the frame or
other component below the leak. If any oil or seepage is found, a refrigerant leak would be suspected.
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