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© Kemppi Oy / 1418
EN
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3.3
Welding selections
3.3.1 manual metal arc welding (mma)
Select welding parameters according to filler manufacturer’s
recommendations.
1.
Select polarity (+ or -) of welding current cable and return current
cable according to filler.
2.
Select MMA welding with the switch
.
3.
Select suitable welding current by adjusting control knob.
3.3.2 DC tig welding
Select welding parameters according to filler manufacturer’s
recommendations.
1.
Connect TIG torch to - pole and earth return cable to + pole
2.
Select TIG welding with the switch
.
3.
Select suitable welding current by adjusting control knob.
3.4
earthing and welding
NOTE!
Welding fumes may be dangerous to your health, see that there
is ample ventilation during welding! Never look at the arc without face
shield made for arc welding! Protect yourself and your surroundings
from the arc and hot spatter!
3.4.1 earthing
If possible, always fix earth return cable clamp directly on the welding piece.
1.
Clean connection surface of earth clamp from paint and rust.
2.
Connect the clamp carefully so that contact surface is as large as
possible.
3.
Finally check that the clamp sits tight.
3.4.2 Welding
See also 3.1. Welding processes and 3.3. Welding selections.
NOTE!
It is recommended that you try welding and rate of welding
current first on something else than the actual work piece.
You can start welding after having made the necessary selections. Arc is lit
by scratching the welding piece with electrode. Length of arc is regulated by
holding electrode tip at a suitable distance from welding piece. Suitable arc
length is usually about half the diameter of the electrode core wire. When
arc is lit move the electrode slowly forwards tilting it to appr. 10-15° pulling
angle. If necessary, adjust current value.
Summary of Contents for HiArc S 140
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