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CONTROL PANEL REPAIR.
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TM-5-4210-218-13P Air Conditioner Vertical Compact 6 000 BTU Manual
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Product Selection Valve Replacement.
TM 5-4210-218-13&P 5-5.2.  Unit Operation Valve Replacement. 5-5.2.1.  Removal. a. Tag or mark all hoses to allow correct reconnection and disconnect all hoses leading to or away from valve (refer to paragraph 4-13). b. Loosen two setscrews (8) located in sides of valve handle (9) and remove handle. NOTE Mark valve top in some manner. c. Remove four cap screws (10) securing valve (11) to control panel.  As last screw is removed, hold valve to prevent falling.  Discard nuts. NOTE Note the location of all hardware items in relation to valve top for reinstallation. d. Hold removed valve securely and remove all elbows (12).  Discard nuts. e. Discard valve. 5-5.2.2.  Installation. a. Check replacement valve visually for defects.  Do not use if defective. NOTE Valve  should  come  with  handle  pointing  to  OFF  position.    Mark  valve  body  before  removing handle so valve will be installed with mark at top. b. Loosen the setscrews (8) located in sides of valve handle (9) and remove handle.  Discard nuts. c. Wrap  male  threads  with  one  layer  of  antiseize  tape  (item  3,  Section  II,  Appendix  F)  and  install  elbows  (12) removed  in  d.,  above  on  valve  (1  1),  in  same  relative  position  as  removed.    Use  mark  indicating  valve  top  as guide. d. From  rear  side  of  control  panel,  pass  valve  (11)  control  shaft  through  opening  for  unit  operation  valve.  Make certain mark is at top. e. Align one panel valve mounting cap screw hole with a matching relative position hole in valve body. Keep mark at top. f. Install one cap screw (10) through control panel into valve (11) body.  Do not tighten. g. Install three remaining cap screws (10) and tighten all four. h. In accordance with tagging or marking scheme used at disconnect, reconnect all hoses leading to or away from valve. i. Install valve handle (9) with pointer indicating OFF and tighten two setscrews (8). 5-9

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