4-9. Installing Welding Wire And Adjusting Pressure Drive Setting

Install wire spool. Adjust tension nut so wire is taut when wire feed stops.

Thread wire.

Adjust tension.

1

. Pressure assembly

Drive Rolls

 

door not shown.

Back Of Gun

 

 

 

 

 

 

 

 

End Of Liner

2

Ref. 804 190-A

No Wire Slip

NONCONDUCTIVE

SURFACE

Wire Slips

Tools Needed:

 

NONCONDUCTIVE SURFACE

15/16 in

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-228 956 Page 16

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Miller Electric 75 manual End Of Liner, No Wire Slip, Wire Slips