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2
Please disconnect the device from the power
supply before setting the nominal voltage.
3
Adjusting the nominal voltage during operation
of the welder is prohibited.
4
Please make sure before operating the welder
that the rated voltage of the unit matches that
of the power source.
4. Operating
Before use:
a. General information about electric arc welding
b. The electrode
c. Protective clothing
d. Face protection
e. Working environment
a. General information about electric arc
welding
The temperature of the arc amounts to approx.
7000° Celsius, so the end of the electrode and the
workpiece fuse. For as long as the arc is
maintained, the electrode will melt and supply the
necessary welding material to the parts to be
joined. The distance between the electrode and the
workpiece must be as short as possible (approx.
1.5 - 4 mm) depending on the diameter and type of
electrode. The current needed for welding is
supplied by the welding appliance. The power
required by the welding appliance depends on the
work to be done. Make sure that the electrodes are
completely dry, as moist electrodes cause
problems. If the electrode sticks to the workpiece
during welding your current intensity is set too low.
b. The electrode
•
The electrode consists of a metal core
enclosed by a coating. The coating has the
most important purpose of protecting the
welding pool and the transferring droplets
against oxygen and nitrogen in the
surrounding air. The electrode melts during
welding. A part of the coating vaporises so a
protective gaseous shield originates.
part of the coating floats on the welding pool (it
is lighter than steel) and also protects the
cooling weld. After cooling this coating
becomes a solid but easily removable slag on
the welded joint.
•
Handle the electrodes with care so the coating
is not broken. Make sure that the electrodes
are thoroughly dry, so store them in a
moisture-free place.
Ferm
•
It is of great importance to use the right
electrode to make a good and strong welded
joint. A universal electrode will in many cases
be suitable for your work.The electrode
packaging mentions in which positions
welding can be done with the electrodes
concerned (above the head, downwards, etc.
bearing in mind the speed of melting of the
electrode). Separate electrodes are
commercially available for the welding of types
of stainless steel and cast iron. Consult your
dealer about purchasing the right electrode.
c. Protective clothing
Wear thoroughly covering clothing so that the
likelihood of the skin being burnt by ultraviolet
radiation or splashes of metal is minimised.
Preferably wear cotton overalls, welding gloves
and safety shoes. Make sure that welding spatter
cannot end up in gloves or shoes.
A (leather) welding apron stops burning and
sparks damaging overalls.
d. Face protection
Fig. 2
Use a good welding mask with (dark) welding
glass and protective glass. Check that both
glasses are correctly fitted (well-fastened and not
allowing any sunlight in).
The welding mask protects the welder against
radiation, heat and weld spatter released during
the welding process. This also reduces the
inhalation of welding fumes. The invisible
ultraviolet rays cause so-called "welder's flash".
This already originates after a few seconds of
looking into the electric arc.
Avoid the effects of this radiation and high
temperatures on the face and other exposed body
parts such as the neck and arms.
Protect yourself against the dangerous effects of
the electric arc and keep persons who are not
participating in the work at least 15 m from the arc.
Persons or assistants working in the vicinity of the
electric arc must be advised of the hazards and
they must be equipped with the required protective
gear. If required, set up protective walls.
e. working environment
•
Ensure a well ventilated working environment.
Gases are released when welding that are a
danger to your health.
•
Remove all flammable objects from the
working environment. Welding causes sparks
and hot metal.
EN
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