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14
WELDING POWER ADJUSTMENT
Adjusting the welding power according to sheet thickness aects simultaneously
both wire feed speed and amount of current lead to the wire. This is a good starting
point for welding in dierent operating situations. However, connection type and
root opening may inuence the amount of welding power needed.
Select the correct parameter with the welding power control according to the
welded llet weld's sheet thickness. If the llet weld's sheets are of dierent
thickness, use their average as a default parameter.
Sheet thickness scale has been given in millimetres and it is based on 0.8 mm wire
diameter. When using a 0.6 mm wire, set the welding power control slightly higher
than the used sheet thickness and correspodingly slightly lower with 0.9-1.0 mm
wires.
NOTE! When welding for the rst time, we recommend that you set the arc
length trimmer to the middle position.
ARC LENGTH TRIMMER
The arc length trimmer adjusts the length of the arc shorter or longer and aects
the welding temperature. A shorter arc is colder and a longer one hotter.
The arc length trimmer also aects the arc's welding properties and spatters with
dierent combinations of ller wire diameters and shielding gases. If the weld is too
convex, the arc is too short or cold. Then adjust the arc longer or hotter by turning
the control clockwise. If on the other hand, you want to weld with a colder arc to
prevent for example the parent material from burning through, adjust the arc
shorter by turning the control counter clockwise. You can also adjust the welding
power, if need be. Once the arc has been trimmed, it usually does not need to be
changed when the welded sheet thickness changes.
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