Design and function
Intermediate hose package connection
099-005613-EW501
23.04.2019
21
5.2.4 Pressure regulator connection
Figure 5-7
Item Symbol Description
0
1
Pressure regulator
2
Output side of the pressure regulator
3
Shielding gas cylinder
4
Cylinder valve
• Before connecting the pressure regulator to the gas cylinder, open the cylinder valve briefly to blow
out any dirt.
• Tighten the pressure regulator screw connection on the gas bottle valve to be gas-tight.
• Screw gas hose connection crown nut onto the output side of the pressure regulator.
5.2.5 Gas test – setting the shielding gas volume
• Slowly open the gas cylinder valve.
• Open the pressure regulator.
• Switch on the power source at the main switch.
• Trigger gas test
> see 5.2.5 chapter
function (welding voltage and wire feed motor remain switched off
– no accidental arc ignition).
• Set the relevant gas quantity for the application on the pressure regulator.
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
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!
