Section IV. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
Systematic, periodic, preventive maintenance checks and services (PMCS) are essential to insure that the fire
suppression equipment set is ready for operation at all times. The purpose of a preventive maintenance program is to
discover and correct defects and deficiencies before they can cause serious damage or complete failure of the
equipment. Any effective preventive maintenance program must begin with training the operators to report all unusual
conditions that they note during their PMCS or actual operation.
A schedule for unit preventive maintenance inspection and service should be established immediately after
installation of the fire suppression equipment set. A quarterly interval, equal to three calendar months, is recommended
for usual operating conditions. When operating under unusual conditions, such as a very dusty, sandy, wet, or humid
environment, It may be necessary to reduce the interval to monthly or even less If conditions are extreme.
Table 4-1 lists the unit preventive maintenance checks and services that should be performed at quarterly (or
otherwise established) intervals. The PMCS items in the table have been arranged and numbered in a logical sequence
to provide for greater personnel efficiency and least amount of required maintenance downtime The paragraph reference
information included In the procedure column provides the paragraph number where detailed, step-by-step
disassembly/reassembly maintenance procedures may be found.
Be sure to perform your PMCS each time the Fire Suppression Equipment Set is used
Use DA Form 2404 (Equipment Inspection and Maintenance Worksheet) to record any faults that you discover
performing your PMCS The item number column in table 4-1 will be used as a source of item numbers for the TM
Number Column on this form. You DO NOT need to record faults that you fix.
4-7. PMCS PROCEDURES.
The "INTERVAL" column of table 4-1 tells you when to do a certain check or service
The "PROCEDURE" column of table 4-1 tells you how to do required checks and services.
Terms "ready/available" and "mission capable" refer to same status: Equipment is on hand
and ready to perform its mission. (See DA Pam 738-750.)
The "NOT FULLY MISSION CAPABLE IF:" column in table 4-1 tells you when your equipment is non-mission
capable and why it cannot be used.