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8. Replacing the drive roller groove
CAUTION! All maintenance, replacement of parts, repairs or adjustments should be carried out with
the power supply disconnected from the device.
If you need to change the wire diameter, also replace the drive roller or adjust the position of the
drive roller.
Be aware of the different types of rolls depending on the welding wire used:
Rollers with a "V" groove.
Rollers with a "V" groove.
Rollers with a knurled groove.
The most popular are rollers with a V-shaped groove. Such rollers are designed for the most popular
welding wires. In the case of aluminum wires, rollers with a U-shaped groove are used. This is due to
the fact that the aluminum wire is more prone to crushing, so that the wire does not deform, it is
necessary to use an appropriate roller. A separate narrow group of feeder rollers are knurled rollers
for cored wire (FCAW).
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 spool housing by pressing the opening buttons and install the spool so that it
rotates counterclockwise.
2. Secure the spool with the spool lock.
3. Unfasten the end of the wire from the spool and hold it in your hand at all times to prevent
the spool from unwinding.
4. Straighten the end of the wire for about 20 cm and cut off the bent part.
5. Open the pressure adjustment lever that opens the feeding mechanism.
6. Guide the wire through the rear wire guide to the welding gun wire guide.
7. 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.
8. 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.
9. Make sure that the contact tip suitable for the installed welding wire is inserted into the
welding gun. If necessary, replace the contact tip.
10. 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. Do not
touch any earthed objects with the torch; otherwise, an electric arc may form.
11. 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.
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