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CHARGING  THE  SYSTEM  (cont.). - TM-5-4120-375-14_186
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TM-5-4120-375-14 Air Conditioner Horizontal Compact 18 000 BTU 208 Volt 3 Phase 50/60 Hertz NSN
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CHARGING  THE  SYSTEM  (cont.). - TM-5-4120-375-14_188
5-19 TM5-4120-375-14 5-18.  CHARGING  THE  SYSTEM  (cont.). a.   Place   the   refrigerant   cylinder   on   a   scale   of   sufficient   capacity. b. c. d . Weigh   the   cylinder   and   record   the   weight. Open   the   suction service   valve   and   slightly   open   the   cylinder shutoff   valve.   Gas   refrigerant   will   be   sucked   into   the   refri- geration   system   rapidly   at   first,   then   more   slowly   as   pressures begin   to   equalize. When   pressures   have   equalized   or   10   pounds (4.48   kg)   of   refrigerant   gas   have   flowed   into   the   refrigerant   system, close   the   suction   service   valve   and   the   cylinder   shutoff   valve. Check   operation   and   top   off   refrigerant   as   necessary,   in   the following   manner: CAUTION If   knocking   or   pounding   is   heard   when   starting   the   air   conditioner, shut   down   at   once   and   release   some   refrigerant   before   attempting another   start. NOTE The  vapor  valve  is  not  used  on  a  two  valve  system. NOTE If   a   one   valve   cylinder   is   used   invert   the   cylinder.

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