Quantcast Table 2-2..  Nitrogen Pressure Regulator Temperature vs.  Pressure Corrections - TM-5-4210-218-13P_40

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PREPARATION FOR CHARGING
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Table 2-2..  Nitrogen Pressure Regulator Temperature vs.  Pressure Corrections - TM-5-4210-218-13P_41
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

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