Migatronic SIGMA GALAXY 300 Guía De Usuario página 12

Connection and operation
Lift instructions
The lifting points must be used (please
see figure) when lifting the machine.
The machine must not be lifted with
mounted gas bottle.
Do not lift the machine by the handle.
Do not step on the handle.
Adjustment of wire brake
The wire brake must ensure that the wire reel brakes sufficiently
before the welding wire runs over the edge of the reel. The
brake force is dependent on the weight of the wire reel and wire
feed speed. Factory setting is 15kg.
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 control knob.
Assembly of parts in wire feed unit
12
Cable dimensions
Welding current DC
200 A 35 mm²
300 A 50 mm²
400 A 95 mm² / 2x50 mm²
500 A 2x70 mm²
Welding process Distance to
work piece
MIG - IAC and pulse
MIG - non pulse
a
Connection of electrode holder for MMA
The electrode holder and earth cable are connected to
plus connection (10) and minus connection (8). Observe the
instructions from the electrode supplier when selecting polarity.
x4
PULSE
35 mm²
70 mm²
95 mm² / 2x50 mm²
2x70 mm²
Total cable length
in welding circuit
(a+b) (a+b+c)
10 m 20 m
30 m 60 m
b
c
The pressure of the
thumbscrew is adjusted to
allow the wire feed roll
just to slide on the wire
when this is stopped at
the contact tip