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HALON / NITROGEN RECOVERY PROCEDURES (cont) - TM-5-4210-218-13P_38
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TM-5-4210-218-13P Air Conditioner Vertical Compact 6 000 BTU Manual
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Table 2-2..  Nitrogen Pressure Regulator Temperature vs.  Pressure Corrections - TM-5-4210-218-13P_40
TM 54210-218-13&P 2-10  PREPARATION FOR CHARGING. NOTE The  following  instructions  apply  only  to  the  charging  of  Halon  and  nitrogen  into fire extinguisher cylinders that have been evacuated in accordance with paragraph 2-9 of this manual. 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 0-2,000 psi (0-13789 kPa). a. Connect the Halon tank adapter assembly with gauge (1000 psi) located in tool box, to the Halon supply cylinder. Then connect Halon hose to the adapter assembly. b. Connect the air compressor to the quick-disconnect fitting on the air filter, 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 of air at 150-175 psi (1034 to 1206 kPa). c. Verify that the shift valve located on top of on the pump is open (two stage position). d. Verify that all valves on the control panel are in the OFF position. e. Verify that all other valves and ports on the hoses, fire extinguisher and Halon cylinder are closed. f. Connect nitrogen monitor adapter assembly with gauge  (1500  psi),  located  in  tool  box,  to  the  extinguisher  hose using the quick disconnect fitting. 2-10.1  For the M1 Tank or any Cylinder with a Schrader Valve.  (Refer to Figure 2-7.). WARNING Sudden  release  of  compressed  gases  may  cause  severe  injury  to  personnel.    Do not deviate from approved procedures.  Wear safety goggles or face shield, gloves and   hearing   protection   when   working   with   pressurized   equipment.      Perform operating  procedures  in  a  well  ventilated  area.    Accidental  Halon  leaks  remove oxygen from the air.  Suffocation can occur. WARNING Before    starting    the    charging    procedure    on    any    M-1    or    Schrader    valve    fire extinguisher  cylinder,  make  certain  the  safety  pin  and  antirecoil  cap  are  in  place and the cylinder has a hydrostatic test date not more than 5 years old.  Reject any cylinder that does not satisfy both criteria.  Serious injury could result from doing otherwise. a. Connect the Schrader valve adapter, located in tool box, to the nitrogen monitor adapter assembly.  The Schrader valve adapter has a 370 bend at one end. b. Start the compressor.  Adjust the air inlet regulator on the Recovery / Recharger Unit to 140 psi (965 kPa). 2-22

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