Installing And Threading Welding Wire - Miller Electric S-62 Owner's Manual

4-8. Installing And Threading Welding Wire

.
Be sure that outlet cable has proper size
liner for the welding wire size. When
installing gun, position liner extending
from outlet wire guide as close as pos-
sible to drive rolls without touching.
Install gun. Lay gun cable out straight. Cut off
end of wire. Push wire through guides up to
drive rolls; continue to hold wire. Press Jog
button to feed wire out gun.
Pressure
Indicator
Scale
Tools Needed:
.
For soft wire or small diameter stainless
steel wire, use 2 drive rolls and set drive
roll pressure from 0 to a maximum of 4
on the pressure indicator scale (so that
only the inner spring is compressed).
This setting will generally give the best
performance for these types of wires.
To adjust drive roll pressure, hold nozzle
If necessary, move hub and spool
support so wire runs straight from
the spool through the drive rolls.
Install wire spool. Adjust tension
nut so wire is taut when wire feed
stops.
Pressure
Adjust
NONCONDUCTIVE
SURFACE
No Wire Slip
3/16, 5/64 in
15/16, 3/8 in
about 2 in (51 mm) from nonconductive
surface and press gun trigger to feed wire
against surface. Tighten knob 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. Close cover.
Install wire guides and
anti-wear guide.
Install drive rolls.
NONCONDUCTIVE
SURFACE
Wire Slips
Ref. ST-156 929-A / Ref. SC-150 922 / 802 438 / Ref. ST-156 930 / S-0627-A
OM-1579 Page 15