Miller Electric MW 140 Plus Threading Welding Wire, Hold wire tightly to keep it from unraveling

5-9. Threading Welding Wire

4

6

Tools Needed:

1 2 3 5

1Wire Spool

2Welding Wire

3Inlet Wire Guide

4Pressure Adjustment Knob

5Drive Roll

6Gun Conduit Cable

Lay gun cable out straight.

.Hold wire tightly to keep it from unraveling.

4 in (102 mm)

6 in (150 mm)

Open pressure assembly. Make sure feed roll is set to correct groove to match wire size (see Section 7-4).

Tighten

1

2

3

4

Pull and hold wire; cut off end.	Push wire thru guides into gun;
	continue to hold wire.

.Use pressure indicator

scale to set a desired drive roll pressure.

Pressure

Indicator

Scale

Be sure that wire is positioned

in proper feed roll groove. Close and tighten pressure assembly, and let go of wire.

Press gun trigger until wire comes out of gun.

Remove gun nozzle	Turn power on. Be sure that Voltage range
and contact tip.	switch is set to range 1, 2, 3, or 4 to feed wire.
	Rotate knob until it “clicks” into detent. Wire
	will not feed if range switch is set between
	ranges.

	Tighten
		1
		2
	WOOD	3
		4
Be sure that tip matches wire diameter.	Feed wire to check drive roll pressure.
	Tighten knob enough to prevent slipping.
Reinstall contact tip and nozzle.
	Cut off wire. Close door.

Ref. 803 714-A

OM-219 316 Page 18