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Post-flow [s]
Post-flow is the period of time for which gas
flows after the arc is extinguished and is
variable 0-20 sec.
Synergic post-flow (option) can be activated by
adjusting time to less than 0 secs, if the IGC kit has
been mounted. The displays shows then IGC and the
current post-flow. The synergic post-flow can be
adjusted +/- 50% by pressing the
adjusting the control knob (when the function is
active).
IGC Gas control kit (option)
Adjustment of the gas flow is possible
if a gas control kit has been installed
as special equipment. Press on the
the gas pre-flow and gas post-flow icons are turned
on. The gas flow is variable 4 - 26
Synergic gas flow can be activated by setting l/min to
less than 1 l. The display shows then IGC and the
current gas flow level. The synergic gas flow can be
adjusted +/- 50% by pressing the
ajusting the control knob (when the function is active).
The gas valve will be completely open and the gas
adjustment is disconnected when the gas flow rate is
set to 27l.
CWF wire program (option)
Press on the
slope-up and slope-down icons are
turned on. The display will show X.YY where X is the
CWF unit and YY is the relative program number to be
used. Rotate the encoder to select unit/program. 0.00
is used when NO CWF must be activated. (default)
Current type
It is possible to select either AC (alternating
current) or DC (direct current). In the TIG-
welding process, AC is used for welding of aluminium
and its alloys, while DC is used for the welding of other
materials.
AC-t-balance (based on time) (TIG)
Adjustment of the refinement function during
the AC TIG welding of aluminium and its alloys.
The function is a balance based on time between the
positive and negative halfperiod.
Adjustment is possible between 20 and 80 percent as
the statement in percent is based on the negative part
of the period time. Adjustment continues until a suit-
able refinement zone is established around the molten
pool. In MMA the value is fixed to 50%.
-key pad and
-key pad until
l/min.
-key pad and
-key pad until the
22
AC-frequency
The AC frequency can be adjusted from 25 to
150 Hz for TIG welding. A low frequency
during TIG welding increases the tendency for the
formation of a large ball at the end of the tungsten
electrode. Increasing the frequency will reduce this
tendency. The frequency for MMA-welding can be
adjusted from 25 to 100 Hz. Forcing the Frequency to
0 Hz
in
MMA
just
Electrode (+/-), avoiding the need of exchanging
Electrode Clamp and Ground cable.
Maximum AC frequency as function of welding current
Electrode preheating
The length of the preheat period depends on
both the diameter of the electrode and the
angle of the point of the electrode, as well as the size
of the ball at the end of the electrode.
Adjustment is possible from 1 to 20, with 1 being the
minimum and 20 being the maximum preheat periods.
If the period is too short the pilot arc will extinguish
shortly after ignition. The size of the ball at the end of
the electrode will increase if the pre-heat period is too
long.
AC-I-balance, current intensity based
(only TIG)
The purpose of the function is also adjustment
of the refinement zone during AC TIG welding.
100%
150%
However, this balance is based on the current
intensity of the positive period proportional to the
current intensity of the negative period. A reduction of
the positive refinement current may have the effect
that the lifetime of the tungsten electrode improves.
Adjustment is possible between 30 and 170%. In
MMA the value is fixed to 100%.
reverse
the
polarity
50%
of
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