Expondo Stamos S-MIG160DS Manuel D'utilisation page 40

If you need to change the wire diameter, also replace the drive roller or adjust the position of the
drive roller.
1) Tilt the pressure adjustment lever to open the pressure roller.
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.
10. 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) Attach the spool with 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.