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Figure 2-6. Halon Cylinder Inversion.
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TM-5-4210-218-13P Air Conditioner Vertical Compact 6 000 BTU Manual
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PREPARATION FOR RECOVERY - TM-5-4210-218-13P_34
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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