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Figure  4-14.  Motor  thermal  protector  housing
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TM-5-4120-239-14 Refigeration Unit Mechanical Panel Mounted For Refrigerator Prefabricated Eletric Motor Driven KECO Model F10000R-6 NSN 4110-01-077-B203 Gasoline Engine Driven Manual
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Figure   4-15.   Condenser   fan   motor   thermostatic   switch.
housing and   connect leads.   Install   thermal protector  housing  on  motor  and  secure  with  screws and   washers   previously   removed. 4-40.   Installation a.  Evaporator  Fan  Motor.  Install  evaporator  fan motor   as   follows: (   1   )   Set   motor   on   fan   and   motor   base   with motor   shaft   in   fan   and   motor   shaft   (fig.   4-11). Install  four  cap  screws  and  lock  washers  through underside  of  base  to  secure  motor.  Tighten  setscrew in  fan  and  motor  shaft. (2)  Install  fan  and  motor  assembly  on  resilient mounts   and   install   four   screws   and   lock   washers (fig.  4-1  1). (3)   Install   brackets   above   fan.   Install   tem- perature   selector   switch   bulb   in   clamps   and   secure clamps   with   screws   and   lock   washers. (4)   Refer   to   paragraph   4-25   and   install evaporator   drain   piping. Section  XIII.  MAINTENANCE  OF  FAN 4-41.  Fan   Motor   Speed   Control   Switches a.   General.   The   evaporator   fan   motor   speed control  switch  is  a  toggle  switch  which  is  part  of  the control   module.   Replacement   instructions   for   this switch   are   included   with   the   control   module.   The condenser   fan   motor   speed   control   thermostatic switch,   located   on   the   rear   wall   of   the   housing, automatically   controls   the   fan   motor   speed.   The switch   is   normally   open   and   closes   on   temperature rise   between   95°   F   and   105°   F.   When   the   switch contacts   close   the   condenser   fan   relay   coil   is energized   and   the   relay   shifts   the   fan   motor   circuit from   low-speed   to   high-speed. b.   Testing.   Test   the   switch   and   connector assembly   in   the   air   conditioner   as   follows: (  1  )  Refer  to  paragraph  4-21  and  remove  rear top   cover. (2)   Disconnect   electrical   connector   located   just (5)   Connect   motor   electrical   connector. (6)   Refer   to   paragraph   4-18   and   install evaporator  air  inlet  louver. b.   Condenser   Fan   Motor.   Assemble   motor   on mounting  plate  and  install  motor  and  mounting plate   as   follows: (  1  )  Refer  to  figure  4-13  and  install  bushings (8)  in  mounting  plate  (9)  if  they  were  removed. (2)   Place   a   washer   (7)   over   each   bushing   and set  motor  (6)  on  washers.  Install  four  screws  (3), washers  (5),  and  lock  washers  (4).  Install  collar  (2) on   motor   shaft   and   install   setscrew   (1). (3)   Install   plate   and   motor   in   air   conditioner and   slide   fan   impeller   (fig.   4-1   2)   on   motor   shaft. Install   four   screws   and   flat   washers. (4)   Connect   motor   electrical   connector. (5)   Refer   to   paragraph   4-21   and   install housing   covers. MOTOR SWITCHES AND CAPACITORS below   condenser   motor   electrical   connector   (fig.   4- 12). (3)   Check   for   continuity   between   terminals   of connector.  There  should  be  no  continuity  between terminals   when   temperature   is   below   95°   F.   If   a source  of  heated  air  is  available,  check  for  closing  of contacts   and   continuity   between   terminals   at   95°   F to   105°F. (4)   If   switch   and   connector   assembly   do   not meet   requirements, check   wiring and   repair damaged   wiring   or   replace   switch. c.   Removal.   With   top   cover   removed   and electrical   connector   disconnected, proceed   as follows : (  1  )  Refer  to  figure  4-15  and  remove  two  screws and   lock   washers.   Remove   switch   and   connector assembly. (2)   Disconnect   switch   Ieads   from   connector. 4-23

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