a.   Where   water   is   available,   keep   the   immediate area  wetted   down.   Keep  the  unit  as  clean  as  possible, paying   special   attention   to   the   screens   and   grilles. b.   Clean   filters   and   strainers   more   frequently than   under   normal   conditions.   Be   sure   that   all   lub- ricant   containers   are   tightly   sealed   and   stored   in an  area  free  from  dust  and  sand. c.   Take   all   necessary   precautions   to   keep   dirt   and grit  out  of  the  fuel  tank. 2-19.   Operation   Under   Rainy   or   Humid   Conditions. Keep  the  fuel  tank  full  to  prevent  forming  of  conden- sation. During  dry  periods  when  the  set  is  not operating,  open  the  doors  and  allow  the  set  to  dry  out. Drain  water  and  sediment  from  fuel  tank  (fig.  3-7) more  frequently, 2-20.  Operation  in  Salt  Water  Areas. a.  Salt  water  causes  corrosive  action  on  metal. Care  must  be  taken  to  avoid  equipment  contact  with salt   water. If  contact  is  made,  or  if  the  unit  is  ex- posed   to   salt   spray,   wash   the   generator   set   frequently with  clean.  fresh  water. b.   Remove   rust   or   other   corrosion   and   paint   all damaged  preprinted  surfaces  in  accordance  with  ser- vices    requirements. 2-21.   Operation   at   High   Altitudes. The   engine   generator   set   will   operate   at   elevations up  to  5,000  feet  above  sea  level  without  special  ad- justment  or  reduction  in  load.  At  8,  000  feet  above sea  level,  the  50/60  kw  rating  is  reduced  to  45  54 kw.  Since  higher  altitudes  also  increase  the  possi- bility   of   freezing,   the   coolant   antifreeze   protection should  be  checked  (table  2-1)  and  the  batteries  should be   tested   (paragraph   3-82   b).  A  reduction  in  the  load may   be   also   be   necessary   since   engines   are   more likely   to   overheat   at   high   altitudes. 2-22.   Operation   in   Snow. Keep  the  fuel  tank  full  to  prevent  forming  of  condensa- tion.   Drain   water   and   sediment   from   fuel   tank   (fig. 3-7)   more   frequently.   Check   coolant   antifreeze   pro- tection   (table   2-1)   and   test   the   batteries   (para   3-82b). Insure   that   drifting   snow   does   not   obstruct   normal ^– cooling  air  flow. 2-23.   Control   Cubicle   Removal   for   Remote   Operation. The  set  is  designed  for  operation  with  the  control  panel located  up  to  500  feet  from  the  set. If   a   remote   location   is   desired,   prepare   a   suitable   lo- cation  for  mounting  the  panel.  Disconnect   and   remove wiring   harness   (1,   Fig.   3-17)   and   control   cubicle   as- sembly   (7).   Fabricate   a   new   cable   of   required   length using  wire  compatible  with  the  connectors  P1  and  P2. Section VI. OPERATION OF AUXILIARY MATERIAL USED IN CONJUNCTION WITH THE EQUIPMENT 2-24.   General. This  section  contains  operating  instructions  for  all kits   and   auxiliary   equipment.   Included   are   the   fuel burning   winterization   kit,   electric   winterization   kit, wheel  mounting  kit,  and  load  bank. 2-25.  Fuel  Burning  Winterization  Kit. The   fuel   burning   winterization   kit   is   utilized   to   pre- heat   engine   coolant   and   lubricating   oil   in   extreme cold   weather.   The   fuel   burning   winterization   kit   is installed  as  described  in  paragraph  4-4.  In  ambient temperature  of  -65°  F,  the  kit  should  be  placed  in operation  a  minimum  of  55  minutes  prior  to  starting. Operating   time   may   be   reduced   or   increased   for warmer   or   colder   temperatures,   respectively.   Op- erating   instructions   for   the   fuel   burning   winterization kit  are  shown  in  figure  2-11. 2-26.   Electrical   Winterization   Kit. The   electrical   winterization   kit   consists   of   a   heat   ex- changer,   control   box,   coolant   pump,   thermostat   and accessories. The  primary  purpose  of  the  kit  is  to maintain  the  set  in  a  heated  condition,  at  any  ambient temperature  from  125°  F.  to  -65°  F.  to  enable  it  to accept  75%  of  rated  load  in  one  step  within  20  seconds after   starting   action   is   initiated.   The   coolant   temper- ature  is  thermostatically  controlled  at  130°  F.  to 150°  F. The  kit  can  also  be  used  to  warm  the  Generator  Set  for initial   starting   within   5   hours   at   any   ambient   tempera- ture  down  to  -65°F. Power  for  operation  of  the  kit  may  be  obtained  from any  power  source  that  supplies  205  to  240  volts  at 50,   60   or   400   Hz   single   phase.   For   electrical   winter- ization  kit  operating  instructions  refer  to  Fig.  2-12. 2-27.   Wheel   Mounting   Kit. The  wheel  mounting  kit  provides  a  means  of  mobility for   the   generator   set.   The   maximum   towing   speed   is 5  mph  on  paved  surfaces.  Operation  of  the  wheel mounting   kit   is   illustrated   in   figure   2-13. 2-28.   Load   Bank. The  load  bank  provides  up  to  50%  of  the  rated  load  of the   generator   set   to   compensate   for   underrated   loads. Operating   instructions   for   the   load   bank   are   illustrated in  figure  2-14. 2-32 Change 12