INSTALLATION Locate the welder in a clean.  dry place where there is free circulation of air. Be  sure  the  voltage,  phase  and  frequency  of  the  input  power  is  as specified on the welder nameplate. Dual and triple input voltage machines (230/460 and 220/380/440-50 hertz)  are  shipped  with  the  motor  leads  disconnected  but  with  the higher voltage heater links in place and the lower voltage heater links tied to the starter.  Connect the motor leads and the appropriate heater links as indicated on the instructions inside the starter cover. Have a qualified electrician connect 3 phase AC power to the starter in accordance with the National Electrical Code.  all local codes and the wiring diagram glued to the inside of the starter cover. Recommended Input Wire, Ground Wire and Fuse Sizes Based on National Electrical Code. For 60 Hertz.  3 Phase Welders at 50s% Duty Cycle Rating Input Ampere Copper Wire Size Rating Type 75° C in (at200 Conduit Fuse Size Welder Voltage A.30V 3 Input 1 Ground Ampers Size Input Output) Wires Wires (Super Lag) 230 32 #10 #10 60 250 460 16 #14 #14 30 575 12.8 #14 #14 25 The frame of the welder must be grounded.  :A stud marked with the symbol ¯   located  on  the  starter  mounting  panel  is  provided  for  this purpose.      See   the   National   Electrical   Code   for   details   on   proper grounding  methods.    (If  an  old  machine  does  not  have  a  grounding stud, connect the grounding wire to an unpainted frame screw or bolt.) Start the welder and check the direction of rotation.  Proper direction as shown by an arrow on the nameplate.  On 3 phase machines the direction  of  rotation  can  be  changed  by  interchanging  any  two  input leads For two phase.  3 wire Input power.  interchange the two outside leads.    Be  sure  the  neutral  wire  is  connected  to  the  motor  neutral. which is the center terminal on the starter.  For two phase.  4 wire input power.  interchange two leads in the same phase NOTE: When changing the voltage connection for any machine above code 4835 and bel6w code 3050.  the heater links must be changed.  See page 7 to determine which heater links must be installed.    On  machines  with  a  code  number  between  3050  and 4835.  the heater links do not have to be changed when changing the voltage connection as long as the connection on the wiring diagram inside the starter cover of these machines Is used OPERATION RECOMMENDED OUTPUT CABLES Recommended Copper Cable Sizes at 30% Duty Cycle Machine Cable Sizes of Combined Lengths of Size Electrode and Work Cable in 0 100 150 200 Amperes to 100 to 150 to 200 to 250' 180 4 3 2 1 250 3 2 1 1/0 ELECTRODE POLARITY With the welder off connect the electrode cable to the DC negative or DC positive stud as required for your particular application.  Connect the wo4k cable to the other stud. DUTY CYCLE These welders are NEMA rated for a 30% duty cycle.  Duty  cycle is based on a 10 minute period.  Therefore, they can be operated at a full output (either 250 or 180 amps) for 3 minutes out of each 10 minute period without over heating.  At 50% duty cycle the output rating is 200 amps for the DC-250 & SAE-200J models or 145 amps for the DC-180 & SAE-152J models. CONTROL OF WELDING CURRENT Continuous Current Control The   continuous   current   control   provides   the   major   adjustment   of welding  current  to  suit  your  particular  applications  The  continuous current  control  has  a  single  dial  calibrated  in  amperes.    The  control handle has five pointers corresponding to the five major divisions on the  Continuous  Voltage  Control  dial  When  the  Continuous  Voltage Control  dial  is  set  on  55.    for  example.    the  approximate  welding current  is  indicated  by  the  pointer  marked  55  on  the  Current  Control handle. Continuous Voltage Control The  Continuous  Voltage  Control  is  both  the  fine  current  control  and voltage control of your welder.  With this control -3-