Migatronic SIGMA2 300 COMPACT Guide De L'installateur page 12

Connection and start-up
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
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Cable dimensions
Welding current
200 A
300 A
400 A
500 A
Welding process
MIG - IAC and pulse
MIG - non pulse
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.
DC
35 mm²
50 mm²
95 mm² / 2x50 mm² 95 mm² / 2x50 mm²
2x70 mm²
Distance to
work piece
(a+b)
10 m
30 m
a
c
x4
PULSE
35 mm²
70 mm²
2x70 mm²
Total cable length
in welding circuit
(a+b+c)
20 m
60 m
b
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