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TM 5-4210-218-13&P
p.
When the flow of Halon stops, start the pump by rotating the PUMP control valve 90 degrees counterclockwise.
Stop the pump after each stroke and watch scale carefully to ensure that the Halon weight is 0.5 pound less than
the extinguisher rated capacity (for example, 5 pound capacity; fill to 4.5 pounds) The remaining Halon will be
forced from the hose to the extinguisher with nitrogen pressurization.
q.
When the extinguisher contains the appropriate number of pounds of Halon, close the ball valve on the
extinguisher hose.
r.
Place HALON/NITROGEN valve in the OFF position.
s.
Raise agitator bracket, with extinguisher attached, so it no longer rests on scale platform.
t.
Read the thermometer on scale column and adjust the nitrogen regulator gauge to the pressure according to the
ambient temperature as indicated in Table 2-2.
u.
Open ball valve on nitrogen supply cylinder.
v.
Open ball valve on extinguisher hose.
w.
Place the HALON/NITROGEN valve in the NITROGEN position and pressurize the extinguisher.
x.
When correct pressure as read on the nitrogen monitor adapter assembly gauge is reached, close ball valve on
extinguisher hose.
y.
Agitate fire extinguisher in bracket to reduce pressure. If pressure is under that required, repeat steps t through y.
NOTE
Repeat paragraph 2-10.2 steps t. through y. until pressure in fire extinguisher is
stabilized at required pressure.
z.
Close the fill valve on the fire extinguisher cylinder by slowly rotating the safety control valve clockwise to the SET
position.
aa.
Place the HALON/NITROGEN valve to the OFF position.
ab.
Disconnect the Bradley adapter from the fire extinguisher fill valve and install cap.
NOTE
Place the filled fire extinguisher aside for 24 hours. The time and date of setting
aside should be marked on the fire extinguisher. At the end of 24 hours repeat
paragraph 2-10.2 steps w through y.
NOTE
The steps that follow are to recapture the Halon left in the pump and hoses back
into the Halon supply cylinder.
ac.
After all fire extinguisher are processed, verify that the valve on the Halon hose is closed.
ad.
Close ball valve on nitrogen supply cylinder. Loosen nitrogen pressure regulator to nitrogen cylinder connection
and bleed off nitrogen.
2-27
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