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TM 5-4210-218-13&P
g.
Slowly open the ball valve on the Halon hose.
h.
Place the UNIT OPERATION valve in the RECOVER position for approximately 5 seconds. Then move it to the
CHARGE position. Do not allow the inlet pressure gauge to exceed 500 psi.
i.
Place HALON / NITROGEN valve in the HALON position.
j.
Close the nitrogen supply cylinder valve.
k.
Monitor the inlet pressure gauge on the control panel for 20 to 30 minutes for any loss of pressure. If no pressure
loss is detected skip steps I and m.
I.
If pressure loss is detected open the nitrogen supply cylinder valve to reestablish pressure.
m.
Using leak detection compound (item 9, Section II, Appendix F) check all connections for leaks. Correct any leaks
found.
n.
Close nitrogen supply cylinder valve.
o.
Slowly open ball valve on extinguisher hose to release pressure in the system.
p.
Disconnect the test adapter from the Halon hose.
q.
Disconnect the nitrogen hose from the test adapter and store the test adapter in the tool box.
r.
Connect the nitrogen hose to the elbow on the HALON / NITROGEN valve.
s.
Place all valves in the closed or OFF position
2-8 PREPARATION FOR RECOVERY.
NOTE
The following instructions apply only to the recovery of Halon and nitrogen from
fire extinguisher cylinders that are partially or fully charged. In accordance with
EPA environmental law, do not vent Halon into the atmosphere.
Inlet pressure gauge on the control panel reads minus 20 psi (minus 138 kPa)
(vacuum) to plus 600 psi (4137 kPa). Outlet pressure gauge on the control panel
reads 0-2000 psi (0-13789 kPa).
WARNING
Check to ensure that the recovery cylinder is a high pressure 2265 psi (15617 kPa)
cylinder. Failure to use the correct cylinder can result in explosion and death.
a.
Place recovery cylinder on the floor next to nitrogen cylinder and secure with straps attached to the nitrogen
cylinder support.
b.
Connect the Halon cylinder adapter assembly, with gauge, to the recovery cylinder. Then connect Halon hose to
the adapter assembly. Tighten all connections.
c.
Connect the air compressor to the quick-disconnect fitting on the filter, located below and to the left rear of the
control panel. Adapt the supplied female quick-disconnect fitting to the air hose as required. Compressor must
supply a minimum of 15 CFM at 150 to 175 psi (1034 to 1206 kPa).
2-16
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