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15.3 TIG
Before switch-on, ensure that the elec-
trode is not touching the welding table,
the workpiece or another electrically-
conductive object, to ensure that you
do not unintentionally ignite arcing on
switch-on. An unintentionally ignited
arc can damage the electrode holder,
the welding table, the workpiece and
the machine.
Switch on the system
 Press the On/Off button 28 for 2 sec. to switch
on the system.
 Press button 27 to select the TIG 2-stroke or
4-stroke operating mode.
9 The TIG (LED 24), HF (LED 25) and 2-stroke or
4-stroke (LED 22) symbol lights up.
 Press button 27 for 2 sec. to switch the "Slopes"
function on or off.
 Use control knob 19 to set the desired welding
current.
VIII
Arc ignition
 Open the valve 56 on the TIG welding torch.
 Briefly touch the workpiece with the tip of
the electrode at the point to be welded.
 Lift the electrode a little.
9 The arc burns between the workpiece and the
electrode.
- 36 -
Pulses
 Press button 26 until the Pulses symbol (LED
23) lights up.
 Call up the secondary parameters (see "16 Sec-
ondary parameters" on Page 37).
 Select the "Secondary energy" secondary pa-
rameter (2.E).
 Set the desired secondary current value by us-
ing control knob 19. The setting value is based
on the main current I
 Select the "Pulse frequency" secondary param-
eter (PuF).
 Set the desired pulse frequency by using con-
trol knob 19.
 Select the "Pulse cycle duty" secondary param-
eter (PuB).
 Set the desired pulse duty cycle by us-
ing control knob 19. The setting value
specifies share in % of the main current I
Example: 60% corresponds to a mix of 60%
main current I
 Leave the secondary parameter menu.
‰ The calculated average current value is shown
on Display 39 during the welding process.
Slopes (start and end crater filling pro-
gramme)
When Slopes is activated, the start and
i
i
 Call-up the secondary parameters ("16 Second-
ary parameters" on Page 37).
 Select the relevant secondary parameter and
set its value as preferred.
‰ The "Start energy" (StE) and "Crater fill energy"
(CFE) are based on % of the main current
 Leave the secondary parameter menu.
909.4039.9-05
Welding method
in %.
1
and 40% secondary energy I
1
crater filling programme with the asso-
ciated parameters becomes available.
.
1
.
2
01.22
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