Threading Welding Wire Through Gun - Miller Electric XR Control Owner's Manual

5-13. Threading Welding Wire Through Gun

For XR-Edge Gun:
Welding wire is electrically live when
gun trigger is used to jog wire.
.
Turn OFF coolant supply before removing head
tube on water-cooled gun.
Lay gun cable out straight. Open top cover, and open
pressure roll assembly. Remove head tube from gun.
Press Jog switch until about 2 in (51 mm) of wire is
sticking out front of gun. Insert wire into head tube liner
and secure head tube to gun.
For Pistol-Grip Gun:
.
Turn OFF coolant supply before removing head tube
on water-cooled gun.
1 Pressure Roll Assembly
Lift arm and open pressure roll assembly.
2 Cable Assembly
Lay cable assembly out straight.
Push Jog switch up to feed wire through cable assembly.
3 Drive Roll
For wire sizes .035 in (0.9 mm) and smaller use small
For Both Guns:
.
Procedure is the same for
pistol-grip gun.
Tools Needed:
Feed wire to check drive roll pressure.
If necessary, slightly tighten thumb nut
inside gun.
5
2
Nonconductive
Surface
Refer to Section 5-12 for instructions on feeding wire
through feeder.
Close top cover on gun. Press Jog switch until about
6 in (152 mm) of wire is sticking out end of contact
tip. See final pressure adjustment at bottom of page.
3
1
4
groove, and .047 in (1.2 mm) and 1/16 in (1.6 mm) use
large groove.
4 Contact Tip
Manually thread wire along drive roll groove and out con-
tact tip 2 in (51 mm). Close pressure roll assembly.
5 Tension Thumbnut
6 Pressure Adjustment Knob
7 Final Pressure Adjustment
See procedure at bottom of page. Reinstall gun cover.
Cut off wire. Close and latch wire
feeder door.
6
Ref. 802 193-A / 801 556-B / 151 599-F
OM-1594 Page 23