3-10. Threading Welding Wire And Adjusting Pressure Drive Setting

Tools Needed:

Welding Power Source

ON

PURGE

V

OFF

POWERJOG

Turn on power at welding power source.

Hold wire tightly to keep it from unraveling.

6 in (150 mm)

Pull and hold wire; cut off end.

Adjust tension.

1

. Pressure assembly

Drive Rolls

 

door not shown.

Back Of Gun Cable

 

 

 

 

 

 

 

 

End Of Liner

2

No Wire Slip

NONCONDUCTIVE

SURFACE

Wire Slips

NONCONDUCTIVE

SURFACE

Ref. 804 391-A / Ref. 804 190-A / Ref. 156 798

1Drive Roll Pressure Adjustment Lever

2Notch In Lever (Indicates Pressure Settings)

Pressure drive settings range from 1 to 8 with 8 being the maximum setting.

.For aluminum (soft) wire set pressure drive setting at 4 or below.

.Be sure that gun has proper size liner for the welding wire size.

When installing gun, the liner should extend into the PD continuous guide (or exit guide if used) as far as possible without interfering with the guide.

Install gun. Lay gun cable out straight. Cut off end of wire. Push wire through guide up to drive rolls; continue to hold wire. Press Jog button to feed wire out gun.

To adjust drive roll pressure, hold nozzle about 2 in (51 mm) from nonconductive

surface and press gun trigger to feed wire against surface. Adjust pressure drive lever so wire does not slip. Do not overtighten. If contact tip is completely blocked, wire should slip at the feeder (see pressure adjustment above.)

Cut wire off.

OM-227 674 Page 16

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Miller Electric AA40GBU manual Threading Welding Wire And Adjusting Pressure Drive Setting, Powerjog