Migatronic SIGMA2 300 Compact Manuel D'instruction page 19

Connection of torch for MIG/MAG welding
The welding hose assembly is pushed into the central
connector coupling (4) and the nut (5) is tightened by
hand. If a water-cooled torch is used, the cooling hose is
connected to the blue quick-release fitting (7) and the
return hose to the red quick-release fitting (6). The return
lead is connected to the negative pole (8).
Moreover, a multi-plug must be connected on the front of
the machine (9) if the torch is a MIG Manager
®
Note: MIG Manager can only be connected if a
connection kit is mounted in the machine (special
equipment).
Connection of electrode holder for MMA
The electrode holder and return current cable are
connected to plus connection (10) and minus connection
(8). Observe the instructions from the electrode supplier
when selecting polarity.
Control of cooling liquid
If the machine is delivered with an integrated torch cooling
module, it will be necessary to inspect the cooling liquid
level by means of the level control (11). Refillment of
cooling liquid takes place through the filler neck (12).
Adjustment of wire brake
The wire brake must ensure that the wire reel brakes
sufficiently quickly when welding stops. The required brake
force is dependent 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.
Switch on Press  Weld
The machine is almost ready to use
Switch on the welding machine

on the main switch (2)
Select welding program

A welding program must be selected in relation to
welding wire, shielding gas or possible electrode.
Please read how this should be selected on your
welding machine in the quick guide.
Adjust the welding current

Please read your quickguide
Weld

WARNING
There is voltage on the welding wire in all
MIG torches when pressing the torch trigge
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®
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Use of MWF 41 Master and Slave
Please note that MWF 41 Slave and RWF have
the same functions.
The slave indicators are turned off when they are
inactive and are turned on constantly when they
are active.
The inactive wire feed unit is ready for welding
after a short pressure on the torch trigger.
When the master wire feed unit is active, all
settings made on the master control panel will
only have an influence on the master unit.
When the slave wire feed unit is active, all settings
made on the master control panel will only have
an influence on the slave unit.
Trolley with automatic mains voltage
transition
(Special equipment)
Machines supplied with autotransformer can be
connected to the following mains supplies:
3*230V, 3*400V, 3*440V og 3*500V.
Press the power switch (13) to turn on the
autotransformer (green indicator light). The built-in
energy saver function will automatically turn off
the welding machine after 40 minutes of inactivity.
Press the button (14) to turn on the machine again
(red indicator light).
The energy saver function can be permanently
disconnected by a Migatronic technician.