Stel THOR 41K PFC, Инструкция по эксплуатации

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pressure of the compressed air has been correctly
set (only with external compressor).
-Connect the positive cable firmly to the piece to
be cut. (N.B.: do not attach the clamp to the part of
material that will be cut off).
-The generator is now ready for work. When you
want to start, position the torch on the piece to be
cut and press the button on the torch.
Important: a pre-gas 2 seconds after pressing
the torch button to alert the operator of the
imminent start of the pilot arc.
-Now the arc is transferred to the piece to be cut.
Move the torch in the desired direction at a speed
that ensures a good cutting quality.
-When the cut is finished, release the torch button
to stop the arc; air will come out for 15 seconds to
cool the torch parts.
CUTTING:
-Do not freely or unnecessarily ignite the pilot arc
when not cutting! This action considerably
reduces the life of the nozzle.
-Start cutting from the edge of the work- piece, until
you manage a perforation.
-Ensure that, during cutting, the sparks fall away
from the bottom of the work-piece. If sparks or
dross come out at the top it means that the torch is
being moved too fast or that there is not the
necessary power to perforate the work-piece.
-Keep the torch in a vertical position and observe
the arc along the cutting line. By dragging the torch
lightly on the work-piece you can keep the cut
regular.
-When cutting thin materials, reduce the power to
give optimum cutting quality.
PIERCING:
- Hold the torch at a distance of approximately 1
mm. from the work-piece before pressing the torch
button. This distance will prolong the life of the
nozzle and other parts.
- Start cutting at a slight angle rather than with the
torch in a vertical position. This allows the molten
material to come out at one side instead of spitting
back towards the nozzle, thus protecting the
operator against sparks and increasing the life of
the nozzle.
- Hold the torch facing away from your body and
bring it slowly into the vertical position. (This is
important when cutting thick gauges). Ensure that
the torch is pointed away from you and from
anyone else in the vicinity, to avoid damage
caused by sparks of molten metal.
- When the pierced hole has been completed,
carry on with cutting.
COMMON MALFUNCTIONS DURING CUTTING:
The work-piece is not completely perforated.
The causes may be:
−
The current is too low.
−
The cutting speed is too fast.
−
The torch components are worn.
−
Incorrect torch angle
- The piece to be cut is too thick.
Presence of waste material on the bottom of the
cut. The causes may be:
−
The cutting speed is too low
−
Insufficient cutting current
−
Incorrect torch angle
−
The cutting current is too high
−
Torch components are worn.
−
Travel speed is too slow
AIR PRESSURE
With external compressor: An air flow of 90 I/min
must be available at a minimum pressure of 4.8
bar. If the pressure is less than 4 bar it will have a
detrimental effect on striking and on cutting quality.
DO NOT EXCEED 6 bar. The air filter supports a
pressure of 10 bar and it may explode if a greater
pressure is applied.
With built-in compressor: an air flow of 35 l/min at
a pressure of 2 bar.
OVERHEATING OF THE TORCH:
After several minutes of cutting, the torch cap may
become hot. To cool it, press the TEST GAS
button until the cap temperature falls to acceptable
values
.
CONSUMABLE PARTS CHECK FUNCTION
The machine is endowed with automatic control of
the state of the consumable parts.
Once that the consumable (tip and electrode) ones
draw near to the usury, and accordingly it will be
advisable or necessary to replace them the
machine signals him through the I flash some led
of turned on arc
for 3 seconds during the end of
the process of cut.
SWITCHING OFF
After having made the cut, the operator may switch
off the machine as follows:
1- Switch off the machine turning the line switch
to position “off“.
2- Check that the machine live Led and the air
presence Led are off.
3- Disconnect the plug of the machine from the
power socket .
CHANGING WORN PARTS
Attention! The torch nozzle and the
neighbouring parts reach high temperatures
during use; to avoid the risk of burns, wait for
them to cool down before carrying out
maintenance work!
From time to time, or if you notice any
malfunctions, inspect the torch nozzle to see
whether there is any damage. If the nozzle hole is
deteriorated or appears to be oval, it is time to