CONTROL PANEL (TYPE 1) SYSTEMS OPERATION GENERATOR MOUNTED CONTROL PANEL (TYPE 1 - PRIOR TO CATERPILLAR PARTS SERVICE) INTRODUCTION The uses of the generator mounted control panel are: To   help   control   the   electric   power   made   by   the generator set To monitor (check) the operation of the generator set. To help protect the generator set from damage caused by low oil pressure, high coolant temperature, overspeed and overcrank. To  help  with  the  transfer  of  electrical  load  to  and  from the generator set. To help parallel two or more units onto the same bus. IDENTIFICATION The  location  of  the  control  panel  is  on  the  top  of  the regulator  housing.    Identification  of  some  of  the  control panel  components  is  given  on  black  plastic  plates.    The position of control panel switches is also given on these plates.    The  control  panel  has  an  eleven  place  model number on the panel nameplate. NOTE:    Parts  for  this  control  panel are not serviced by Caterpillar Tractor Company. WIRING Wiring  diagram  No.  1  shows  wiring  connections  for control   panels   made   before   the   remote   Annunciator panel   and   Prealarm   module   were   available   through Caterpillar. Wiring  diagram  No.  2  shows  wiring  connections  for control   panels   made   after   remote   Annunciator   panel 3N7325  and  Prealarm  module  3N5569  were  available through Caterpillar. wiring    diagram  No.  3  is  for  packaged  generator  sets with   a   two   element   speed   switch   (OSS   and   USS)   in place of overspeed switch (OS). NOTE:    A  photograph  of  the  panel  is shown after wiring diagram No.  2. MAXIMUM RECOMMENDED TOTAL BATTERY CABLE LENGTH CABLE DIRECT ELECTRIC STARTING SIZE 12 Volt 24-32 Volt 0 4 ft. (1.2 m) 15 ft. (4.6 m) 00 5 ft. (1.5 m) 18ft. (5.5m) 000 6 ft. (1.8 m) 21 ft. (6.4 m) 0000 7.5 ft. (2.3 m) 27 ft. (8.2m) COLOR CODE B - black W - white R - red PU - purple W/B - white with black stripe O - orange BR - brown BL - blue LT GR - light green The  number  after  the  color  is  the  recommended  wire size 149