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Page Title: Figure 6-2 Pressure testing (dry nitrogen).
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Figure   6-2   Pressure   testing   (dry   nitrogen). (2)  Remove  the  caps  from  the  service valves. (3) Insert the discharge service valve and suction service valve lines from a suitable pres- sure manifold (fig. 6-1) through the receptacle opening and attach loosely to the service valves. Attach center manifold line to a refrigerant drum shutoff valve (fig. 6-1). Open shutoff valve and purge lines.. Tighten connections at both ser- vice  valves. Note.  Set   refrigerant   drum  in  an   upright   position so  that   only   gaseous   refrigerant   will   enter   system.   To   fa- cilitate   speed   of   charging,   set   refrigerant   drum   in   warm water.  Never  use  a  heating  torch  for  this  purpose. (4) Set temperature control above ambient temperature. (5) Close discharge service valve. (6) Install the condenser fan and fan guard (para 3-21). (7) Open refrigerant drum shutoff valve. 6-3

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