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Adjusting Machine Settings
When using your new spool gun on a power supply or welding machine that was manufactured by Forney Industries:
•
The left knob on the front of your welding machine will control the voltage of the weld.
•
The right knob on the front of your welding machine will control the wire feed speed.
•
Depending on the model of your Forney welding machine, the wire feed speed control knob on the spool gun
will either:
1.
Allow the user to scroll through the entire wire feed speed range from 0 to 100% of the capability of the welding
machine (rendering the wire feed speed knob on the front of the welding machine useless).
2.
Allow for fine control, giving the user ± 10% of the wire feed speed that is set using the knob on the front of the
welding machine.
When using your new spool gun on a power supply or welding machine that was not manufactured by Forney Industries:
•
Please refer to the welding machine manufacturer’s instructions.
The following machine settings are to be used as baseline data. User experimentation and practice is encouraged to learn
the true capabilities of your welder.
because the wire electrode dips into the puddle and cannot be melted off fast enough.
2.
Setting welding voltage too high (too high with regard to the wire feed speed), will result in excessive and unstable
arc. Increase the voltage even higher and the contact tip will burn.
3.
Excessive wire speed can be corrected through the arc voltage increase. The limit of this adjustment depends on the
thickness of the material to be welded (a certain limit exceeded will result in burn through).
Place the gun on the joint you want to weld: the angle between the gun and the workpiece should be around 45°. The
distance between the gun and the workpiece should be about 1/2” - 5/8.” Lower your face shield and press the gun
trigger to start the arc. When the arc has struck, move the nozzle slowly from left to right along the joint. Adjust the wire
feed speed until the arc makes a “crisp” sound (experience will help you to recognize the right sound).
