19
The arc will extinguish after the period of slope-
down time. The torch is held at the welding spot
until after the period of gas post-flow time in
order to protect the welding spot against
oxidation.
Two-stroke
This symbol means LIFTIG ignition. The arc
is established in the following way:
1) The torch is placed so that the Tungsten elec-
trode has contact with the welding spot.
2) The torch trigger must be kept pressed down.
3) The arc is established by lifting the torch, and the
welding process has started. In order to stop the
welding process, the torch trigger is deactivated.
The arc will extinguish after the period of slope-
down time. The torch is held at the welding spot
until after the period of gas post-flow time in
order to protect the welding spot against
oxidation.
Four-stroke
This symbol means LIFTIG ignition. The arc
is established in the following way:
1) The torch is placed so that the Tungsten elec-
trode has contact with the welding spot.
2) The torch trigger must be kept pressed down.
3) The arc is established by lifting the torch, and the
torch trigger is deactivated. In order to stop the
welding process, the torch trigger is reactivated.
The arc will extinguish after the period of slope-
down time. The torch is held at the welding spot
until after the period of gas post-flow time in
order to protect the welding spot against
oxidation.
Please note! Both HF as well as LIFTIG ignition
cannot be effected until post-flow is finished.
Pilot arc
In this section it is possible to
choose whether the pilot arc
should be activated or not. Connection/disconnection
of this function cannot be changed during the
welding process.
The pilot arc cannot be activated.
The pilot arc can be activated.
Used only in the TIG welding process, a pilot arc is
a weak arc which illuminates the workpiece, and
thereby makes it easier to find the starting point of
the actual welding process.
The pilot arc can be ignited by briefly activating the
torch trigger (less than 0.3 seconds). If activation is
longer (more than 0.3 seconds), the machine
switches automatically to ordinary welding.
Switch from pilot arc to ordinary welding by keeping
the torch trigger activated when two-times TIG-
welding or by long activation (>0.3 seconds) when
four-times TIG or spot welding. The welding
process then continues in normal fashion.