English 8 English
Functions
Front panel
Picture 1
Picture 2
Process selector
(Rif.1 - Picture 1 page 6.). In this position welding can be
used with rutile, basic electrodes, and specially coated
electrodes.
Lift TIG procedure
In this position the TIG welding process with lift mode
ignition can be selected, as described previously.
To ignite the arc
TIG welding, proceed as follows:
Touch the welding piece with the electrode; this will
cause a short circuit between the piece (2) and the
electrode (1).
Lift off the electrode; the arc will ignite.
The integrity of the electrode tip is guaranteed by the low
ignition current during short-circuiting between the
welding piece and the electrode ignition is guaranteed
even at minimum welding current settings; the operator
can therefore work without contaminating the ambient
with electromagnetic disturbance, normally caused by
high frequency discharges.
The advantages can be this summarized:
no need for high-frequency startups,
no damage to the electrode tip during start-ups,
regardless of ampere setting, thereby avoiding the
presence of tungsten in the welding piece, common
during scratch starting.
Fault led (Yellow)
(Rif.2 - Picture 1 page 6.). When the fault led lights on,
the overheating occurs inside the unit due to the
exceeding the rated duty cycle. Happening that the
welding operations have to be stopped, the welding
power source has to be kept on until the led lights off so
the unit is ready to weld again.
Current regulation
(Rif.3 - Picture 1 page 6.). This potentiometer adjust the
welding current range.
On - off switch
(Rif. 4 - Picture 2 page 6.). This switch has two positions:
ON = I and OFF = O.
Arc led illuminated (Green)
(Rif.5 - Picture 1 page 6.). This led lights when the
machine is turn on.
NOTE
The power source is fitted with an anti-sticking device
that disables power if output short circuiting occurs or if
the electrode sticks, allowing it to be easily detached
from the work piece. This device enters into operation
when power is supplied to the generator, even during the
initial checking period, therefore any load input or short
circuit that occurs during this phase is treated as a fault
and will cause the output power to be disabled.
