INSTALLATION | ||
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7.Disconnect the shielding gas hose from the gun bushing, if required.
8.Connect the shielding gas hose to the new gun bushing, if required.
9.Rotate the gun bushing until the thumb screw hole aligns with the thumb screw hole in the feed plate. Slide the gun receiver bushing into the wire drive and verify the thumb screw holes are aligned.
10.Tighten the socket head cap screw.
11.Insert the welding gun into the gun bushing and tighten the thumb screw.
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| Gun Receiver | For use With |
| Bushing |
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| Innershield and Subarc guns) |
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| connectors; Magnum 200/300/400 |
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| guns and compatible with Tweco® |
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| #4) |
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| Magnum 550 guns and compatible |
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| with Tweco® #5) |
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| compatible with Miller® guns.) |
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| (Compatible with Oxo® guns.) | |
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| ( Lincoln | |
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PRESSURE ARM 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 seconds after the gun trigger is released.
•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.
Set the pressure arm as follows (See Figure A.6):
Aluminum wires | between 1 and 3 |
Cored wires | between 3 and 4 |
Steel, Stainless wires | between 4 and 6 |
FIGURE A.6
CORED WIRES | 1 |
| SOLID WIRES |
OUTERSHIELD | 6 | ALUMINUM | |
METALSHIELD | 5 |
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3 | 2 | STAINLESTEELSS | |
INNERSHIELD | 4 |
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