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Items furnished - TM-55-1930-209-14P-7_24
CHAPTER 3 OPERATING INSTRUCTIONS - TM-55-1930-209-14P-7_26

TM-55-1930-209-14P-7 Water Purification Barges (NSN 1930-01-234-2165) Drinking Water System Manual
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TM 55-1930-209-14&P-7 CHAPTER 2 DESCRIPTION OF OPERATION 2-1  Activation.  When compressor starts, air is drawn through intake filter, manifold, and suction discs into compressor cylinders.  This air is compressed, then discharged through delivery discs to temperature reducer where heat is partially removed  From  temperature  reducer,  compressed  air  is  discharged  through  a  check  valve  into  receiver,  increasing  air pressure  in  receiver.    When  system  is  set  on  automatic  (normal  setting),  compressor  Is  controlled  by  an  automatic  air regulator switch (pressure switch).  When air pressure in receiver reaches factory set upper limit, compressor will unload and  turn  Itself  off.    When  air  in  receiver  reaches  factory  set  lower  limit  on  pressure  switch,  compressor  will  be  activated and  pump  air  into  receiver.    When  system  is  set  on  manual  and  START  button  Is  pushed,  compressor  pumps  air  into receiver until STOP button is pushed. 2-2  Air flow.    Opening  air  compressor  main  air  supply  valve  directs  compressed  air  from  receiver  through  air  filter  1  for removal  of  moisture  and  particles  This  air  then  flows  to  the  air  stations  In  the  ROWPU  space  and  workshop.    Quick disconnect  couplings  at  these  air  stations  permit  connection  of  a  50-foot  airhose  so  pneumatic  tools  may  be  used.    Air also  goes  through  air  filter  2  before  reaching  air  station  6  This  filter  traps  oil  and  grease  and  prevents  contamination  of drinking water shore discharge hose when compressed air pushes PIG through hose prior to hose retrieval.  Compressed air  pressure  regulators  1  and  2  further  reduce  air  pressure  to  a  manually  set  level,  normally  40  psi,  for  blowdown  of seachests in void 2 starboard and void 4 port. 2-1/(2-2 blank)







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