Design and function
Transport and installation
099-004968-EW501
13.09.2021
33
5.1.5.2 Shielding gas hose connection
Figure 5-2
Item Symbol Description
0
1
Connection thread - G¼"
Shielding gas connection (inlet)
• Screw the gas hose connection to the shielding gas connection (inlet) on the machine gas-tight.
5.1.5.3 Setting the shielding gas volume (gas test)/rinse hose package
• Shielding gas supply as described in chapter Transport and positioning.
• Slowly open the gas cylinder valve.
• Open the pressure regulator.
• Switch on the power source at the main switch.
• Set the relevant gas quantity for the application on the pressure regulator.
• Press the gas test key button briefly .
The shielding gas will then flow for approx. 25 sec. Pressing the key button again briefly will pause the
test.
If the shielding gas setting is too low or too high, this can introduce air to the weld pool and may cause
pores to form. Adjust the shielding gas quantity to suit the welding task!
Welding process
Recommended shielding gas quantity
MAG welding
Wire diameter x 11.5 = l/min
MIG brazing
Wire diameter x 11.5 = l/min
MIG welding (aluminium)
Wire diameter x 13.5 = l/min (100 % argon)
Helium-rich gas mixtures require a higher gas volume!
The table below can be used to correct the gas volume calculated where necessary:
Shielding gas
Factor
75% Ar/25% He
1.14
50% Ar/50% He
1.35
25% Ar/75% He
1.75
100% He
3.16
