Igniting The Arc; General; Igniting The Arc Using High Frequency(Hf Ignition) - Fronius MagicWave 190 Operating Instructions Manual

Igniting the arc

General

To ensure the best ignition sequence in the TIG AC welding process, the MagicWave pow-
er sources take account of:
-
-
Igniting the arc
using high fre-
quency
Risk of injury due to shock caused by electric shock
(HF ignition)
Although Fronius devices comply with all relevant standards, high-frequency ignition can
transmit a harmless but noticeable electric shock under certain circumstances.
► Use prescribed protective clothing, especially gloves!
► Only use suitable, completely intact and undamaged TIG hosepacks!
► Do not work in damp or wet environments!
► Take special care when working on scaffolding, work platforms, in forced positions
HF ignition is activated when a time value has been set for the ignition timeout setup pa-
rameter in the HF menu.
The HF ignition indicator lights up in the status bar on the control panel.
Unlike touchdown ignition, HF ignition eliminates the risk of contamination of the tungsten
electrode and the workpiece.
Procedure for HF ignition:
62
the diameter of the tungsten electrode
the current temperature of the tungsten electrode with reference to the preceding
welding and weld-off times
CAUTION!
(out-of-position welding), in tight, difficult to access or exposed areas!
Place the gas nozzle down on the igni-
1
tion location, ensuring there is a gap of
approx. 2 to 3 mm (5/64 to 1/8 in.) bet-
ween the tungsten electrode and the
workpiece Gap exists.