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2) Unscrew the drive roller mounting knob and make sure that the drive roller size is
appropriate for the wire being installed.
3) If necessary, pull the drive roller from the shaft and turn it to change the groove through
which the welding wire will move.
4) Reinstall the drive roller.
5) Tighten the drive roller mounting knob.
6) Close the pressure roller and set the pressure adjustment lever to the vertical position.
7) Adjust the pressure with the lever.
9. Replacing the welding wire
CAUTION! All maintenance, replacement of parts, repairs or adjustments should be carried out with
the power supply disconnected from the device.
1)
Open the housing of the machine and attach the spool of welding wire to the holder so that
it rotates counterclockwise.
2)
Unfasten the end of the wire from the spool and hold it in your hand at all times to prevent
the spool from unwinding.
3)
Straighten the end of the wire for about 20 cm and cut off the bent part.
4)
Open the pressure adjustment lever that opens the feeding mechanism.
5)
Guide the wire through the rear wire guide to the welding gun wire guide.
6)
Close the feeding mechanism and secure it with the pressure adjustment lever. Make sure
that the wire runs in the groove of the drive roll.
7)
Adjust the pressure of the lever, but do not exceed half of the scale. Too much pressure
can damage the wire. On the other hand, if the pressure is too weak, the wire will slide in
the feed mechanism and the wire will not move smoothly.
8)
Make sure that the contact tip suitable for the installed welding wire is inserted into the
welding gun. If necessary, replace the contact tip.
9)
Press the trigger of the welding gun and wait for the wire to come out.
CAUTION! Getting the wire out of the burner requires applying power to the unit.
10) Close the spool housing cover.
CAUTION! When inserting the wire into the gun, do not point the gun at yourself or at other people.
Do not place your hand, e.g., in front of the tip, as the cut end of the wire is very sharp. Also, keep
your fingers away from the feed roller, as this may cause your fingers to be pinched between the
rollers.
Polarity of TIG welding leads
Negative polarity is used in most TIG welding operations. The welding torch is connected to the
negative pole and the grounding clamp to the positive pole. Thus, the wear of the electrode is
reduced and the amount of heat stored in the welded material increases.
Arc ignition in the TIG LIFT method
To ignite the welding arc in the TIG LIFT method, unscrew the valve on the handle, press the button,
then gently rub the tungsten electrode on the workpiece and slightly lift the torch so that the arc
ignites. Releasing the button ends the welding process (in 2T mode).
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