Magnum CARIMIG 202LCD Manual - page 22
Operating Instructions and Parts Manual
MIG/MMA WELDER
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5.4. With your free hand, turn the Wire Speed Dial to maximum and continue to hold onto
the knob.
5.5. Lower your welding helmet and pull the trigger on the torch to start an arc, then begin
to drag the torch toward you while simultaneously turning the Wire Speed Dial counter-
clockwise.
5.6. LISTEN! As you decrease the wire speed, the sound that the arc makes will change
from a sputtering to a high-pitched buzzing sound and then will begin sputtering again if
you decrease the wire speed too much. The point on the wire speed adjustment where the
high-pitched buzzing sound is achieved is the correct setting. You can use the wire speed
control to slightly increase or decrease the heat and penetration for a given heat setting by
selecting higher or lower wire speed settings. Repeat this tune-in procedure if you select a
new heat setting, a different diameter wire, or a different type of welding wire.
6. Welding Techniques
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.
ELECTRIC SHOCK CAN KILL! To prevent ELECTRIC SHOCK, do not perform any
welding while standing, kneeling, or lying directly on the grounded work.
6.1 Moving the torch
Torch travel refers to the movement of the torch along the weld joint and is broken into two
elements: Direction and Speed. A solid weld bead requires that the welding torch be
moved steadily and at the right speed along the weld joint. Moving the torch too fast, too
slow, or erratically will prevent proper fusion or create a lumpy, uneven bead.
Travel direction
is the direction the torch is moved along the weld joint in relation to the
weld puddle. The torch is either PUSHED into the weld puddle or PULLED away from the
weld puddle.
For most welding jobs you will pull the torch along the weld joint to take advantage of the
greater weld puddle visibility.
Travel speed
is the rate at which the torch is being pushed or pulled along the weld joint.
For a fixed heat setting, the faster the travel speed, the lower the penetration and the lower
and narrower the finished weld bead. Likewise, the slower the travel speed, the deeper the
penetration and the higher and wider the finished weld bead.
6.2 Types of welding beads
As you become more familiar with your new welder and better at laying some simple weld
beads, you can begin to try some different weld bead types.