Mains Connection - Migatronic SIGMA 300 Manuel D'instruction

Mains connection

Before connecting the power source to the mains
supply, ensure that the power source is of the same
voltage as the mains voltage provided and that the
fuse in the mains supply is of the correct size. The
mains cable (1) of the power source must be
connected to the correct three-phase alternating
current (AC) supply of 50 Hz or 60 Hz and with earth
connection. The sequence of the phases is not of
significance. The power source is switched on with the
mains switch (2).
Connection of shielding gas
Connect the gas hose, which branches off from the
back panel of the welding machine (3), to a gas supply
with pressure regulator (2-6 bar).
(Note: Some types of pressure regulators require an
output pressure of more than 2 bar to function
optimally).
One/two gas cylinders can be mounted on the bottle
carrier on the back of the trolley.
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.
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.
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).
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

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