TM 5-4220-233-14
c.
Preparing Servicing Unit for Transport after Recharge.
Figure 2-10. Preparing Serving Unit for Transport.
(1) Close all eight cylinder valves (1).
(2) Open all eight 1/4-turn ball valves (2).
(3) Slowly open manifold valve (3).
(4) Dial pressure regulator (4) until servicing pressure gauge (5) indicates pressure reading.
(5) Slowly open servicing valve (6).
(6) Slowly open bleed off valve (7) bleeding air from the Compressed Gas System.
(7) When air can no longer be heard venting from bleed off valve (7) and cylinder pressure gauges (8)
read 0 psig close bleed off valve (7).
(8) Back off pressure regulator (4) and close all Servicing Unit control panel valves.
(9) Close control compartment front doors (9).
(10) Reinstall control compartment side panels (10).
(11) Perform After PMCS.
2-8.
COMPRESSED GAS SYSTEM OPERATION: CHARGING SCUBA CYLINDERS.
a.
Preparing Servicing Unit for Charging.
WARNING
Care should be taken when working around high pressure air systems.
Pressure should always be vented before hoses are connected or
disconnected from the control panel. Failure to follow this warning may
result in personnel injury or death.
COMBUSTION HAZARD. When handling end connections care should be
taken not to contaminated the Compressed Gas System. Failure to follow
this warning may result in personnel injury, death or damage to equipment.
(1) Verify that the Servicing Unit is properly set for operation per paragraph 2-4, step e. and all Before
PMCS has been completed for the Compressed Gas System (See table 2-1, items 9 thru 16).
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