Miller Electric Millermatic 350 manual Threading Welding Wire Through XR Guns, For XR-A Pistol Gun

.A complete Parts List is available at www.MillerWelds.com

3-19. Threading Welding Wire Through XR Guns

! Welding wire is electrically live when gun trigger is used to jog wire.

For XR-A Edge Gun: .Refer to Section 3-18for instructions

			on feeding wire through welding pow-
	1		er source.
		1	Pressure Roll Assembly
		Lay gun cable out straight.
		Open top cover, and open pressure roll as-
		sembly. If not already done, remove gun
		barrel assembly.
Turn On		Press gun trigger until about 4 in (102 mm)
		of wire is sticking out front of gun. Insert
Welding Power
		wire into barrel liner and tighten barrel as-
Source.
Remove barrel assembly before		sembly. Install correct size contact tube
threading wire through gun.		and install collet nut.
		Close top cover on gun. Press trigger
		switch until about 6 in (152 mm) of wire is
		sticking out end of contact tip. Cut off wire.
		Close and latch door.
		.XR Edge gun drive roll pressure
			should be set at minimum.
For XR-A Pistol Gun:		1	Pressure Roll Assembly
2	3
		2	Drive Roll
		3	Thumbscrew
		Lay gun cable out straight. Open top
		cover, and lift pressure arm and open
		pressure roll assembly. If not already
		done, remove gun barrel assembly.
1		Manually thread wire along drive roll
		groove. Close pressure roll assembly.
		Press gun trigger until about 4 in (102 mm)
		of wire is sticking out front of gun. Insert
		wire into barrel liner and tighten barrel as-
Turn On		sembly. Install correct size contact tube
		and install collet nut. Reinstall gun cover.
Welding Power
Source.		4	Pressure Adjustment Knob

See final pressure adjustment at bottom of page.

Remove barrel assembly

before threading wire

through gun.

For XR-A Pistol Gun:

Tools Needed:

Nonconductive

Surface

Feed wire to check drive roll pressure. Tighten knob enough to prevent slipping.

.Do not exceed midrange setting.

Cut off wire. Close and latch door.

! Turn welding power source Off.

Ref. 802 193-A / 801 556 / Ref. 151 666-C

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