SECTION III. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

TM 55-1905-223-24-7

SECTION III. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

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Explanation of PMCS Table. PMCS is designed to keep the equipment in good working condition. This is

accomplished by performing certain tests, inspections, and services. Table 2-1 lists items to be serviced and the

procedures needed to accomplish the PMCS. The "Interval" column tells you when to perform a check or service. If

needed, PMCS may be performed more frequently than the indicated interval. The "Procedures" column tells you how to

perform the required checks and services. If your equipment does not perform as required, see Table 2-2,

Troubleshooting. Report any malfunctions or failures on DA Form 2404. In the Item Number column on DA Form 2404,

record the appropriate Item Number from the PMCS table.

Overview of Product Water Flow. The operator logs the product water flow rate at regular intervals, along

with other data. The rate of flow of product water out of the watermaker is the first sign to watch in order

to judge when to perform maintenance. Don't think that drop in flow rate is always a sign of trouble. A

slow decline in water production is normal during continued operation, even under ideal conditions.

The membrane and salinity probe can get fouled. Debris can slowly build up in the filters and the

sediment strainer. These can all combine to cause variations in flow. Refer to the log for information

needed on the product water flow rate. The PMCS table will instruct you how to figure if the membranes

need cleaning.

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