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Figure 3-45.  Single Stage Pressure Test Fixture
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Figure 3-46.  Two Station Pressure Test Fixture
TM 9-254 3-18. Set Up of Purging and Charging Equipment - Continued (6) Slowly rotate pressure regulator valve (4) clockwise until approximately 5 psig is  registered  on  the  low pressure gage (1).  Check for and eliminate any interference; close pressure regulator valve (4). b. Set  Up  of  Two  Station  Pressure  Test  Fixture  (fig.  3-46).    Set  up  the  two  station  pressure  test  fixture  as follows: (1 Place a tank of dry nitrogen (5) in a vertical position in the back of the fixture so that the tank is lodged in the   structural   steel   "V"   formation   of   the   fixture   and   secure   with   the   strap   and   clamping   screw arrangement provided. (2) Secure  pressure  regulator  (12)  to  the  tank.    Make  certain  pressure  regulator  valve  (13)  is  turned counterclockwise to off.  Open nitrogen tank valve (3) until maximum tank pressure is indicated on the high pressure gage (2). (3) Connect hose assembly (9) to regulator (12) and open manifold valve (10). CAUTION At  no  time  should  the  pressure  be  permitted  to  exceed  15  psig.    Pressures  greater  than  15  psig could damage the unit. (4) Open transfer valve (8) by pulling it to the outermost position. (5) Close test fixture valves (4), and insure low pressure gage (1) indicated 0 psig. (6) Open pressure regulator valves (13) until low pressure gage (1) indicates 15 psig. (7) Open test fixture valve (4) until test fixture gages (11) indicate(s) proper pressure. (8) Close manifold valve (10) and check pressure reading on test fixture gage (11). (9) Remove  stopper  (7)  from  outlet  pipe  (6).    Open  manifold  valve  (10)  and  check  the  pressure  on  test fixture gage (11).  Adjust fixture valve (4) if necessary. (10)  Close manifold valve (10) and attach feeder tube to outlet pipe (6). 3-45

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