Operating Instructions and Parts Manual
Metal man Industrial Welder
14
MIG 135
MIG WELDER
Note: The wire will feed faster without
an arc. When an arc is being drawn,
the wire speed will slow down.
2. Hold the MIG gun
The best way to hold the MIG gun
is the way that feels most comfortable
to you. While practicing to use your
new welder, experiment holding the
torch in different positions until you
find the one that seems to work best
for you.
3. Position the MIG gun to the work
piece
There are two angles of the MIG gun
nozzle in relation to the work piece
that must be considered when
welding.
3.1. Angle A can be varied, but in
most cases the optimum angle will be
60 degrees, the point at which the
MIG gun handle is parallel to the work
piece. If angle A is increased,
penetration will increase. If angle A is
decreased, penetration will decrease
also.
3.2. Angle B can be varied for two
reasons: to improve the ability to see
the arc in relation to the weld puddle
and to direct the force of the arc.
4. Distance from the work piece
If the nozzle is held off the work
piece, the distance between the
nozzle and the work piece should be
kept constant and should not exceed
1/4 inch or the arc may begin
sputtering, signaling a loss in welding
performance.
5. Tuning in the wire speed
This is one of the most important
parts of MIG welder operation and
must be done before starting each
welding job or whenever any of the
following variables are changed: heat
setting, wire diameter, or wire type.
EXPOSURE TO A WELDING ARC
IS EXTREMELY HARMFUL TO THE
EYES AND SKIN!
Prolonged exposure to the welding
arc can cause blindness and burns.
Never strike an arc or begin
welding until you are adequately
protected. Wear flameproof
welding gloves, a heavy long
sleeved shirt, trousers with out
cuffs, high topped shoes, and an
ANSI approved welding helmet.
5.1. Connect the Ground Clamp to a
scrap piece of the same type of
material which you will be welding. It
should be equal to or greater than the
thickness of the actual work piece,
and free of oil, paint, rust, etc.
