Migatronic SIGMA SELECT 400 S, User Manual

Page: 19 / 132

18 19
Connection and start-up
Warning
Read warning notice and instruction
manual carefully prior to initial
operation and save the information
for later use.
Permissible installation
Mains connection
Connect the machine to the correct mains supply. Please read
the type plate (U
1
) on the rear side of the machine.
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.
Important!
In order to avoid destruction of plugs and
cables, good electric contact is required
when connecting earth cables and
welding hoses to the machine.
Connection of welding hose
Lift instructions
The lifting points must be used (please see figure) when lifting the
machine or the MWF unit. The machine must not be lifted with
mounted gas bottle.
Do not lift the machine by the handle.
Do not step on the handle.
Recommended cable dimensions
Welding current DC PULSE
200 A 35 mm² 35 mm²
300 A 50 mm² 70 mm²
400 A 95 mm² / 2x50 mm² 95 mm² / 2x50 mm²
550 A 2x70 mm² 2x70 mm²
Welding process Distance to work piece
(a+b)
Total cable length in
welding circuit (a+b+c)
MIG - IAC and pulse 10 m 20 m
MIG - non pulse 30 m 60 m
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.
WARNING
When you activate the torch trigger,
there is voltage applied to the welding
wire and electrode.
c
a
b
L1
L2
L3
N
yellow/green
brown
black
grey
3x208-440V (boost)
3x400V
0
1
2
1
3