Lincoln Electric Shield-Arc SAM400 Operating Manual page 12

AM2530-1
LN8
1. Turn off the engine and connect the KA1379 control cable from the LN21 to the welder terminal strip
exactly as shown in the drawing.
2. The Portable Field Control shipped with the SAM Welder must be connected as shown. If this is not
done there will be no control of the machine output.
3. Connect the electrode cable to the "Auto Equipment" stud and the ground cable to the "Work" stud.
4. As the LN21 is designed to be operated only with Constant Voltage power sources, the toggle switch
on the control panel must be set in the "Constant Voltage" position at all times.
5. Set the Electrode Polarity Switch for the appropriate polarity, "Constant Voltage" for flux cored gas
shielded electrodes and for spray transfer welding with solid wires. The Portable Field Control is used
to adjust the arc voltage.
6. If inductance control is required for dip transfer welding, set the Electrode Polarity Switch for variable
voltage electrode positive and control inductance by moving the Current Control in the 8 o'clock to 1
o'clock range. Set the arc voltage with the Portable Field Control.
1. Turn off the power source and wire the SAM terminal strip exactly as shown in this drawing.
2. The "Portable Field Control" shipped with SAM Welders must be installed. It provides voltage control at
the welding location.
3. Connect the electrode cable to the "Auto Equipment" stud and the work cable to the "to Work" stud.
4. Generally, set the "electrode polarity" switch to the desired polarity - "Constant Voltage". If the variable
inductance control feature is desired, set the "Electrode Polarity" switch to the appropriate - "Variable
Voltage" setting and adjust the "Current Control" within the 8 o'clock to 1 o'clock range.
5. Set the toggle switch at "Constant Voltage".
6. Set the "Constant Voltage Control" near minimum to start. Set the voltage recommended for the
electrode being used with the "Portable Field Control."
7. Attach the single lead from LN22 control box to the work using the spring clip on the end of the lead.
This is only a control lead - it carries no welding current.
Page 12
LN21
LN22
Shield-Arc SAM-400
LN9
Ref: AM2530-1(A10-4-96M)
IMA 523D