TM 5-4220-233-14
Figure 2-11. Preparing Servicing Unit for Charging.
(2) Open the front doors (1) to gain access to control panel.
(3) Verify that all valves on the control panel (2) are closed and pressure regulator (3) is completely
backed off.
(4) Remove the side panels (4) from the Servicing Unit control compartment.
(5) Slowly open the cylinder valve (5) on each storage cylinder.
(6) Secure the doors to control compartment sides with the holders (6).
CAUTION
If mounting trough on trailer bumper, the rear jacks must be lowered.
Failure to follow the precaution may cause equipment damage.
NOTE
The filling trough may be used to Increase the safe SCUBA cylinders charging
rate. If the trough is not going to be used proceed to paragraph b., step 2.
The following procedure requires two personnel.
(7) Remove trough from it's mounting base (7) and position on the ground within 10' of control panel or
on trailer back bumper.
(8) Verify drain valves on trough are closed, then fill trough with water until trough is approximately
half-full.
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