TM 5-4220-233-14
Table 4-2. UNIT TROUBLESHOOTING (Continued).
MALFUNCTION/SYMPTOM
PROBABLE CAUSE
TEST OR INSPECTION/CORRECTIVE ACTION
12. SCUBA CYLINDER FILL RATE OF 400 PSI/MINUTE CANNOT BE ACHIEVED.
Pressure regulator leaking.
Check for air venting from pressure regulator and replace if necessary.
Relief valve (RV200) leaking.
Check for air venting from valve and replace if necessary.
Particulate filter (F100) clogged.
Check filter element and clean or replace as required.
Leak In high or low pressure side of Compressed Gas System.
Perform a soap solution check on entire compressed gas and repair leak as required.
Manifold pressure gauge (Pl108) bad.
Compare reading on gauge (PI108) to reading on gauge for cylinder in use. Replace gauge if
reading is not correct.
Servicing pressure gauge (P1109) bad.
Close servicing valve (MV118) and adjust pressure regulator to equalize pressure on high and
low sides of system. Replace gauge if correct reading cannot be achieved.
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