19
INSTALL THE WIRE AND FEED THE GUN.
Once the wire spool has been installed, flip the tensioner lever down
and raise the top drive roll to the upper position. See the illustration
below. Gently guide the wire from the spool over through the wire
feeder and into the front section of the gun at least 6 inches. Make
sure the wire lays neatly in the groove. Hold it with your finger if
necessary as you lower the top drive roll down and raise the tension-
ing lever with your other hand. When complete the wire should look
like the illustration on the previous page.
Hint: The wire on the spool
is usually bent and threaded through a small hole in the side of the
spool to lock it in place and prevent de
-
spooling of the wire. Keep
one hand on the wire spool to prevent despoiling and cut the wire
loose with a pair of wire cutters. Trim the wire to make sure the end
of the wire is straight and able to be threaded through the wire feeder
mechanism and gun.
After the tensioner is raised back to the vertical
position, confirm the wire is still in the groove and is not riding up on
the shoulders of the drive roll.
Next, turn the welder on and set to a desired MIG or Flux
-
Cored
mode. Remove the gas nozzle by twisting it
clockwise
and pull. Do
not turn the nozzle counter clockwise! Unscrew the contact tip as
shown in the illustration below. Hold the gun cable and gun straight
as possible. Press and hold the wire jog button. The wire should
slowly begin to feed through the gun cable and eventually through the
gun. As the wire exits the gun, allow 3 to 4 extra inches of wire to be
fed out past the diffusor. Release the wire job button. Re
-
install the
contact tip over the wire and screw it in clockwise until it is tight, but
not to the point of stripping. Install the gas nozzle.
Setup Guide
Getting Started
CHECK AND CHANGE YOUR DRIVE ROLL.
The unit comes equipped with
.030”
and
.035”
drive rolls. NOTICE:
For most purposes up to
3/16”
thick material you will likely want to
use
.030”
wire in this unit since it covers the greatest range of metal
thicknesses and amperages within the capability of this unit.
.030”
wire typically can handle up to about 160A before it transitions to
globular transfer.
For upper range use and materials
3/16”
and over,
.035”
is advisable. Remember, if you change wire size or type, you
will need to either flip the lower drive roll over or completely change
the drive roll to the correct size and type.
The top drive roll is actually an idler roll used to hold tension and
keep the wire in the groove and is not changeable. Only the bottom
drive roll needs to be changed. The bottom drive roll has two small
grooves that are sized for
.030”
(.8mm) and
.035”
(.9mm) solid wire.
Additional sizes and types of drive rolls are available as options. The
standard installed drive roll is meant to feed hard (solid) steel wire.
The groove on this drive roll has a
“
V
”
shape designed for the solid
wire. A Flux
-
Cored drive roll has a serrated edge to the groove,
which grips the softer, cored wire. Viewing a flux
-
core drive roll from
the top, you will see a
“
zipper
”
like pattern. This should never be
used to feed hard steel, stainless or aluminum wire. This will result in
damage to the wire, metal flaking and possible plugging of the MIG
gun liner. To determine the exact size of wire and type you have, look
at the side of the drive roll. The size of the drive roll groove is
stamped on the side of the drive roll closest to the corresponding
groove. The type of the drive roll will also be stamped with a V if it is
for solid, hard wire. If it is stamped with an
“
U
”,
this is a special drive
roll for feeding aluminum wire. Aluminum wire is best fed with a
spool gun.
The drive roll is held in place by a black thumbscrew. Remove the
screw to expose and change the drive roll. The drive roll is mounted
on a bushing. The bushing should be held in place with one finger of
one hand while the other hand removes the drive roll. This will pre-
vent both bushing and drive roll from being removed from the wire
feeder drive shaft. When removing make sure that the square locating
key is not dismounted. If the key falls out of the keyway, replace it
before replacing the drive roll.
Drive Roll Size and Location Info
5
.6mm
=.023”/.025”
.8mm=
.030”
.9mm=
.035”
1.2mm=
.045”
Size/Type Stamping.
(The size is stamped on
same side as the corre-
sponding groove.)
Installing the MIG Wire
How Do I Disassemble the MIG Gun?
M6 Contact Tip
Diffusor and Retaining Spring
Gun Neck
Always remove and install the gas nozzle by twisting clockwise.
Gas Nozzle
Flux
-
Cored Cap
(Not included, sourced from aftermarket sources)