TM 5-4310-393-14
TABLE 3-1. OPERATOR/CREW TROUBLESHOOTING PROCEDURES (CONTINUED).
MALFUNCTION/SYMPTOM
PROBABLE CAUSE
TEST OR INSPECTION/CORRECTIVE ACTION
10 COMPRESSOR OUTPUT VOLUME LOW.
Intake air cleaner filter clogged.
Replace air cleaner filter element (paragraph 3-14.3).
Safety relief valves not seating.
Replace safety relief valve.
First stage valve not closing properly.
Check and clean. Replace if defective. Refer to Unit Maintenance.
11 OUTLET FLOW RESTRICTED.
Clogged final separator.
Remove filter. Replace filter element (paragraph 3-16.3)
Pressure maintaining valve (PMV) set too high.
Check valve for correct opening pressure. Adjust as necessary (paragraph 3-16.1).
12 PRESSURE MAINTAINING VALVE OPERATES AT WRONG PRESSURE
Incorrect setting
Reset (paragraph 3-16.1).
Dirt on valve seat.
Clean and reseat
Damaged valve seat.
Replace valve seat.
13 SAFETY RELIEF VALVES BETWEEN STAGES RELEASING.
Intermediate pressure too high.
Check inlet and discharge valves of higher stage. Clean or replace.
Valves not closing properly.
Replace safety relief valves (see Chapter 6).
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