TM 5-4220-233-14
Section VI. PREPARATION FOR STORAGE OR SHIPMENT
Paragraph
Page
4-61
Depressurizing Servicing Unit for Shipment ..........................
4-99
4-62
Preparation for Shipment ......................................................
4-100
4-63
Preparation for Storage ........................................................
4-101
4-64
Preparation for Long-Term Storage (6 Months or Longer).....
4-102
4-61. DEPRESSURIZING SERVICING UNIT FOR SHIPMENT.
a. Preparing the Servicing Unit for Depressurization.
Figure 4-53. Depressurizing Servicing Unit.
(1) Open the front doors (1) to gain access to control panel (2).
(2) Verify that all valves on the control panel (2) are closed and pressure regulator (3) is
completely backed off.
(3) Remove the side panels (4) from the Servicing Unit control compartment.
b. Depressurizing the Servicing Unit.
(1) Verify that the valve on each storage cylinder (5) is closed.
(2) Open all eight 1/4-tum ball valves (6).
(3) Open manifold valve (7), servicing valve (8), and bleed off valve (9).
(4) Open cylinder valve #1 and observe reading on inlet pressure gauge (10).
(5) If inlet pressure gauge reading is above 0 psi, increase setting on pressure regulator until air
can be heard venting through bleed off valve.
(6) Allow pressure in cylinder #1 to vent until no air can be heard venting from the cylinder.
(7) Close cylinder valve #1 and return pressure regulator (3) to full backed-off position.
(8) Repeat steps 4 through 7 for the remaining seven storage cylinders.
(9) Ensure the entire Compressed Gas System is vented by increasing pressure regulator (3)
setting to full and opening recharge valve (11), high pressure valve (12), and all four fill
station valves (13).
(10)
When air can no longer be heard venting from bleed off valve, back off on pressure regulator
(3) setting and close all valves on the control panel.
4-99
