Set The Wire Drive Tension; Installing Aluminum Wire; Change Polarity - Craftsman 196.205080 Manual De Usuario

SET THE WIRE DRIVE TENSION

WARNING
Arc flash can injure eyes! To reduce the
risk of arc flash, make certain that the wire
coming out of the end of the gun does not
come in contact with work piece, ground
clamp or any grounded material during the
drive tension setting process.
1. Pull the trigger on the gun.
2. Turn the drive tension adjustment knob
clockwise, increasing the drive tension
until the wire seems to feed smoothly
without slipping.
When set correctly, there should be no slip-
page between the wire and the drive roller
under normal conditions. If an obstruction
occurs along the wire feed path, the wire
should then slip on the drive roller.
After the tension is properly adjusted, the
quick release drive tensioner may be
unlocked and relocked and no readjustment
of the drive tension adjustment knob will be
necessary (unless the diameter or type of
wire is changed).

INSTALLING ALUMINUM WIRE

Install aluminum wire the same as steel wire,
but with the following exceptions:
1. Install a teflon liner in the welding gun.
2. Adjust the drive tension VERY carefully.
Aluminum wire is very sensitive to slight
changes in drive tension.
Note: For welding aluminum with this unit,
5356 alloy wire is recommended because of
its superior feedability. A teflon liner is needed.
When welding with softer aluminum alloys,
you may experience feed problems. For best
results with aluminum it may be necessary to
use a spool gun.
16 16

CHANGE POLARITY

This welder allows you the ability to change
the welding current polarity. You may select
either dc Straight (dc - Flux Cored) or dc
Reverse Polarity (dc + MIG). For welding steel
(with solid wire), aluminum, stainless steel,
flux cored hardfacing of steel, and silicon
bronze welding of steel, select dc Reverse
Polarity (dc + MIG). When using self-shield-
ing, flux-core steel wire, use dc Straight
Polarity (dc - Flux Cored).
Change the polarity of your welder according
to the following procedure steps. Figure 9
shows what the polarity block should look like
for each polarity setting.
WARNING
Electric shock can kill! Always turn the
power OFF and unplug the power cord from
the ac power source before changing polarity.
1. For Gas/MIG Welding (DC +), plug the
brass jack of the polarity jumper cable
into the positive (+) receptacle on the
front of the welder, and the brass jack of
the ground cable into the negative (-)
receptacle.
2. For No Gas/Fluxcore Welding (DC -),
plug the brass jack of the polarity jumper
cable into the negative (-) receptacle on
the front of the welder, and the brass jack
of the ground cable into the positive (+)
receptacle.
Figure 9. Polarity Settings