Commissioning
Shielding gas supply
Item No.: 099-005073-EWM01 81
6.10.2 Gas test
• Slowly open the gas cylinder valve.
• Open the pressure reducer.
• Switch on the power source at the main switch.
• Initiate gas test function on the machine control.
• Set the relevant gas quantity for the application on the pressure reducer.
6.10.3 “Rinse tube package” function
Operating
Element
Action Result
5 sec.
Select rinse tube package.
Shielding gas flows continuously until the Gas Test button is pressed
again.
6.10.4 Setting the shielding gas quantity
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)
TIG Gas nozzle diameter in mm corresponds to l/min gas throughput
Notes on aluminium welding
A two-stage pressure reducer should always be used for aluminium welding.
A venturi 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 venturi 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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