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46
12 Welding
Adjusting the Gas Pre-Flow Time
If working with shielding gas, you have to set the gas pre-flow time. Adjust at the
display, how long the shielding gas should flow before the welding process starts.
The gas flows automatically until the stud welding gun is removed from the joined
welding element.
Adjust the flow meter at the gas bottle to 8 to 16 litres/min (minimum 8 l/min.).
Press the shielding gas key, LED shielding gas
lights up.
The display welding time (
) shows the gas pre-flow time.
Set the gas pre-flow time with the two arrow keys (
longer – shorter).
After approx. 2 seconds, the display welding time ( ) automatically switches back
to the previously set welding time.
If you are working with ceramic ferrules, then trigger the shielding
gas key, the shielding gas LED
is off.
In this way, the gas valve remains closed during the welding procedu-
re.
Summary of Contents for IT 2002
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