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4-step mode with intermediate lowering I-2
Intermediate lowering means that the welder uses the torch trigger during the main current
phase to lower the welding current to the specified reduced current I-2.
Place the tungsten electrode onto the workpiece and then pull the torch trigger back
and hold => shielding gas flows
Raise the tungsten electrode => start of welding with starting current I-S
Release torch trigger => welding with main current I-1
Push forward and hold the torch trigger => activation of intermediate lowering with re-
duced current I-2
Release torch trigger => welding with main current I-1
Pull back and hold the torch trigger => lowering to final current I-E
Release torch trigger => end of welding
I
t
I-1
GPr
I-S
I-E
I-2
GPo
I-1
tdown tets
1 2 3 4 5 6 7
tup
1
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