TM 5-4220-233-14
WARNING
Never exceed a charging rate of 200 psi/min with SCUBA cylinders out of a
filling trough or 400 psi/min with cylinders In a filling trough. Failure to
follow this warning may result in personnel injury, death or damage to
equipment.
CAUTION
When charging SCUBA cylinders with rated working pressures of less than
3000 psi special attention should be paid so as to avoid over pressurizing
the SCUBA cylinders. The relief valve is set for cylinders with working
pressures of 3000 psi.
(9) Open servicing valve (8) and appropriate fill station valve(s) (9).
(10) While monitoring servicing pressure gauge (10), adjust pressure regulator (11) until a safe
charging rate is achieved.
(11) Continue adjusting pressure regulator(11) as necessary to maintain a safe charging rate until
desired SCUBA cylinder pressure has been reached or reading of servicing pressure gauge (10) and
cylinder gauge (12) are equal + or - 100 psi.
(12) Slowly close manifold valve (7).
(13) Close 1/4-tum ball valve (6) for cylinder just used for charging and slowly open 1/4-turn ball valve
for cylinder with the next lowest pressure reading.
(14) Slowly open manifold valve (7).
(15) Repeat steps 10 through 14 as necessary until reading of outlet pressure gauge is equal to safe
SCUBA cylinder charging pressure as determined in Navy diving manual 0927-LP-0019010.
(16) Close servicing valve (8) and fill station valves (9) opened for charging.
(17) Close ON/OFF valves (5) on charged SCUBA cylinders(1).
(18) Back off on bleed screw (3) of each yoke adaptor (13) to vent pressure from fill hose(s).
(19) Tighten bleed screw (3) when air can no longer be heard venting from hose(s), then disconnect
yoke adaptor(s) (13) from SCUBA cylinder(s) (1).
NOTE
If more SCUBA cylinders are to be charged repeat steps 1 through 19. If charging
operations are complete proceed to paragraph c.
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