|
| |
TM 5-4210-218-13&P
c.
Attach extinguisher support base, P/N 12463589 (item 6, Appendix D) to agitator bracket.
d.
Carefully place empty fire extinguisher upright onto agitator bracket, secure with straps. Lower agitator bracket to
rest on scale platform.
e.
Remove the cap from the fill valve on the fire extinguisher and connect the Schrader valve adapter to the fill valve
on the fire extinguisher.
f.
Check the maximum pounds capacity of the fire extinguisher being charged, capacity should be marked on
cylinder. Subtract 0.5 pound. The result is the amount of Halon to be put into the cylinder.
g.
Open the fill valve on the fire extinguisher cylinder by rotating the small hex nut counterclockwise.
h.
Open the valve on the Halon cylinder.
Table 2-2.. Nitrogen Pressure Regulator Temperature vs. Pressure Corrections
Temperature
Pressure
Temperature
Pressure
Temperature
Pressure
°F (°C)
PSI (KPa)
°F (°C)
PSI (KPa)
°F (°C)
PSI (KPa)
+ 20(-7)
575 (3965)
+ 60(+ 16)
725 (5000)
+ 100(+ 38)
900 (6205)
+30(-1)
600 (4140)
+70(+21)
750 (5170)
+110(+43)
940 (6481)
+40(+4)
650(4480)
+80)+27)
800(5520)
+120(+49)
1015 (6998)
+ 50(+ 10)
675 (4650)
+ 90(+ 32)
850(5860)
+ 130(+ 54)
1100 (7585)
+140(+60)
1200(8274)
i.
Open the ball valve on the Halon hose.
j.
Adjust the scale to 0 lb. using the tare knob located on top of the scale dial.
k.
Open the ball valve on the extinguisher hose.
I.
Place the UNIT OPERATION valve in the CHARGE position.
m.
Place HALON/NITROGEN valve in the HALON position.
NOTE
With a fully charged Halon cylinder the extinguisher capacity may be reached
without pumping. Watch scale carefully when allowing free flow of Halon.
n.
Check scale for pounds of Halon flowing into fire extinguisher. Fill extinguisher with the amount of Halon
calculated in step f. The remaining Halon will be forced out of the hose into the extinguisher with nitrogen
pressurization.
NOTE
For the next step you will be stopping the pump after each stroke to read the scale.
Keep your hand on the PUMP control valve for quick stopping to avoid overcharge.
2-23
|
