INSTALLATION | ||
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PRESSuRE ARM and ADJuSTMENT
WARNING
ELECTRIC ShOCK can kill.
•Turn the input power OFF at the welding power source before instal- lation or changing drive rolls and/or guides.
•Do not touch electrically live parts.
•When inching with the gun trigger, electrode and drive mechanism are "hot" to work and ground and could remain energized several sec- onds after the gun trigger is released.
•Do not operate with covers, panels or guards removed or open.
•Only qualified personnel should perform mainte- nance work.
The pressure arm controls the amount of force the drive rolls exert on the wire. Proper adjustment of the pressure arm gives the best welding performance. Many welding problems can be attributed to setting the pressure arm too high and causing wire deforma- tion. Set the pressure arm to minimum amount that provides reliable feeding.
Set the pressure arm as follows: |
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(See Figure A.3) |
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Aluminum wires | between 1 and 2 |
Cored wires | between 1 and 3 |
Steel, Stainless wires | between 3 and 5 |
FIGuRE A.3
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| Al | ALUMINUM WIRES | |
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| FCAW | CORED WIRES | |
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6 |
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| GMAW | STEEL, STAINLESS WIRES | |
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GuN CONNECTION
WARNING
ELECTRIC ShOCK can kill.
•Turn the input power OFF at the weld- ing power source before installation or changing drive rolls and/or guides.
•Do not touch electrically live parts.
•When inching with the gun trigger, electrode and drive mechanism are "hot" to work and ground and could remain energized several sec- onds after the gun trigger is released.
•Do not operate with covers, panels or guards removed or open.
•Only qualified personnel should perform mainte- nance work.
The
To install a gun,
1.Turn power OFF.
2.Remove the thumb screw.
3.Push the gun the completely into the gun bushing.
4.Secure the gun in place with the thumb screw.
5.Connect the trigger cable from the gun to the trigger connector on the front of the feeder.
Note: Not all gun bushings require the use of the thumb screw.
FIGuRE A.4
THUMB
SCREW
GUN 
