Migatronic FOCUS MIG2 300 Betriebsanleitung Seite 18

Inching
The function is used for wire inching
e.g. after change of wire.
Selecting welding polarity
Polarity reversal is recommended for certain types of
welding wire, in particular Innershield welding wire. For
recommended polarity, please refer to the welding wire
packaging.
2
FOCUS MIG 300
Change of polarity:
1. Disconnect the machine from the mains supply.
2. Dismount screws in the wire chamber with a wrench
(picture 1).
3. Exchange brass plate from plus to minus (picture 1)
4. Mount screws in the wire chamber with a wrench
(picture 1)
5. Exchange earth cable from minus to plus (picture 2)
6. Connect the machine to the mains supply.
2
FOCUS MIG 400
Change of polarity:
1. Disconnect the machine from the mains supply.
2. Exchange intermediary cable from plus to minus
3. Exchange earth cable from minus to plus
4. Connect the machine to the mains supply
Adjustment of wire brake
The wire brake must ensure that the wire reel
brakes sufficiently quickly when welding stops.
The required brake force is depending on the
weight of the wire reel and the maximum wire feed
speed. A brake torque of 1.5-2.0 Nm will be
satisfactory for most applications.
Adjustment:
Dismount the control knob by placing a thin
-
screw driver behind the knob and thereafter
pull it out
Adjust the wire brake by fastening or loosening
-
the self-locking nut on the axle of the wire hub
- Remount the knob by pressing it back into the
groove.
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