EWM Tetrix 350, Руководство по эксплуатации

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Design and function
TIG Synergic operating principle
099-004854-EW501
19.02.2014
57
Figure 5-19
As an example the process is shown with HF ignition. Arc ignition with lift arc is also possible, however
(see chapter "Arc ignition").
Select the process activation type (see chapter "Advanced settings").
Up- and down-slope times possible for long setting range of the spot time (0.01 s - 20.0 s) only.

Press and release torch trigger (tap) to activate the welding process.

Touch the torch gas nozzle and tungsten electrode tip carefully against the workpiece.

Incline the torch over the torch gas nozzle until there is a gap of approx. 2-3 mm between the
electrode tip and the workpiece. Shielding gas flows in the set gas pre-flow time. The arc ignites and
the previously set ignition current (I
start
) flows.

The main current phase ends when the set spotArc time expires.

The welding current drops in the set down-slope time to the end current (I
end
).

The gas post-flow time expires and the welding process ends.
Press and release torch trigger (tap) to reactivate the welding process (only for separate process
activation). Touching the torch with the tungsten electrode tip again against the workpiece will
initiate the next welding processes.