Commissioning
Shielding gas supply
Item No.: 099-004833-EWM01 113
6.11.2 Gas test
• Slowly open the gas cylinder valve.
• Open the pressure reducer.
• Switch on the power source at the main switch.
• 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.
• Set the relevant shielding gas quantity for the application on the pressure reducer.
For wire feed units with control M3.70, the gas test is conducted by pressing the
button.
6.11.3 “Rinse tube package” function
This function is only available for machine control M3.70.
Operating
Element
Action Result
5 sec.
Select rinse tube package.
Shielding gas flows continuously until the Gas Test button is pressed
again.
6.11.4 Setting the shielding gas quantity
Notes on welding aluminium
A two-stage pressure reducer should always be used for aluminium welding.
A pilot static tube for a gas flow of 0–16 l/min is fitted on each wire feed unit as standard. For applications
where a higher gas flow rate is required (e.g. for aluminium), a pilot static tube for a flow of 0–25 l/min
(see accessories) should be used.
Consequences of incorrect shielding gas settings
• Insufficient shielding gas:
Inadequate gas protection, the indrawn air results in pores in the weld seam.
• Excessive shielding gas:
Turbulence can be caused, allowing air to enter and cause pores in the weld seam.
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