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
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.