voestalpine Böhler Welding URANOS 2000 SMC Betriebsanweisung Seite 38

Connection for MIG/MAG welding
- Connect the gas hose (11) from the cylinder to the rear gas
connection (12).
- Adjust the gas flow from 5 to 20 l/min.
- Connect the power cable (13) to the positive pole (+) (14) of
the terminal strip to change polarity (see "Changing the weld-
ing polarity").
- Connect (15) the earth clamp to the negative socket (-) (16) of
the power source.
- Connect the MIG/MAG torch (17) to the central adapter (18),
ensuring that the fastening ring is fully tightened.
- Open the right side cover.
- Check that the roller groove is consistent with the diameter of
the wire you wish to use.
- Unscrew the ring nut (19), insert the spool, reposition the ring
nut (19) and adjust the friction screw (20).
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- Release the rolls lever of the wire feeder (21), sliding the end
of the wire into the wire guide bush and, passing it over the
roller, into the torch fitting. Lock the feed support in position,
checking that the wire has entered the roller groove.
- To load the wire onto the torch, press the wire feed push-
button.
Welding polarity change
This device permits welding of any welding wire on the market
thanks to the easy selection of the welding polarity (direct or
reverse).
Reverse polarity: the power cable from the torch (22) must be
connected to the positive pole (+) (23) of the terminal strip. The
power cable from the earth socket (24) must be connected to
the negative pole (-) (25) of the terminal strip.
Direct polarity: the power cable from the torch (26) must be
connected to the negative pole (-) (27) of the terminal strip. The
power cable from the earth socket (28) must be connected to
the positive pole (+) (29) of the terminal strip.