GYS PROTIG 250 DC TRI Mode D'emploi page 20

User manual
• connect the earth clamp as close as possible to the area being cut;
• do not work next to the welding power source, do not sit or lean on it.
• do not weld when transporting the welding current source or the wire feeder.
People wearing pacemakers are advised to consult their doctor before using this device.
Exposure to electromagnetic fields while welding may have other health effects which are not yet identified.
RECOMMENDATIONS FOR EVALUATING THE WELDING AREA AND INSTALLATION
General points
The user is responsible for the installation and use of the arc welding equipment according to the manufacturer's instructions. If electromagnetic
disturbances are detected, the user is responsible for resolving the situation with the manufacturer's technical assistance. In some cases, this
corrective action may be as simple as earthing the welding circuit. In other cases, it may be necessary to build an electromagnetic shield around the
welding power source and around the entire piece by fitting input filters. In all cases, electromagnetic interferences must be reduced until they are no
longer an issue.
Welding area assessment
Before installing the machine, the user must evaluate the possible electromagnetic problems that may arise in the area where the installation is
planned. The following should be taken into account:
a) the presence (above, below and next to the arc welding machine) of other power cables, remote cables and telephone cables;
b) Radio/TV transmitters and receptors;
c) computers and other control equipment;
d) safety-critical equipment, e.g. protection of industrial equipment;
e) the health of neighbouring persons, e.g. use of pacemakers or hearing aids;
f) the equipment used for calibration or measurement;
g) the immunity of other materials in the environment.
The operator has to ensure that the devices and equipment used in the same area are compatible with each other. This may require additional
protective measures;
h) the time of day during the welding or other activities have to be performed.
The dimension of the cutting area that has to be considered depends on the size and shape of the building and the type of work undertaken. The area
taken into consideration might go beyond the limits of the installations.
Welding area assessment
Besides the welding area assessment, the assessment of the arc welding systems installation itself can be used to identify and resolve cases of
disturbances. The assessment of emissions must include in situ measurements as specified in Article 10 of CISPR 11. In situ measurements can also
be used to confirm the effectiveness of mitigation measures.
RECOMMENDATION ON METHODS OF ELECTROMAGNETIC EMISSIONS REDUCTION
a. National power grid: The arc welding machine must be connected to the national power grid in accordance in accordance with the manufacturer's
recommendation. In case of interferences, it may be necessary to take additional precautions such as the filtering of the power supply network.
Consideration should be given to shielding the power supply cable in a metal conduit or equivalent of permanently installed arc welding equipment. It
is necessary to ensure the electrical continuity of the frame along its entire length. The shielding should be connected to the welding current source
to ensure a good electrical contact between the conduit and the casing of the welding current source.
b. Maintenance of arc welding equipment: The arc welding machine should be subject to a routine maintenance check according to the
recommendations of the manufacturer. All accesses, service doors and covers should be closed and properly locked when the arc welding equipment
is on. The arc welding equipment must not be modified in any way, except for the changes and settings outlined in the manufacturer's instructions. The
spark gap of the arc starts and arc stabilization devices must be adjusted and maintained according to manufacturer's recommendations.c.
c. Welding cables: Welding cables: Cables must be as short as possible, close to each other and close to the ground, if not on the ground.
d. Equipotential bonding: Consideration should be given to bond all metal objects in the surrounding area. However, metal objects connected to
the workpiece increase the risk of electric shock if the operator touches both these metal elements and the electrode. It is necessary to insulate the
operator from such metal objects.
e. Earthing of the welded part: When the part is not earthed - due to electrical safety reasons or because of its size and its location (which is the case
with ship hulls or metallic building structures), the earthing of the part can, in some cases but not systematically, reduce emissions It is preferable to
avoid the earthing of parts that could increase the risk of injury to the users or damage other electrical equipment. If necessary, it is appropriate that
the earthing of the part is done directly, but in some countries that do not allow such a direct connection, it is appropriate that the connection is made
with a capacitor selected according to national regulations.f.
f. Protection and shielding: The selective protection and shielding of other cables and devices in the area can reduce perturbation issues. The
protection of the entire welding area can be considered for specific situations.
TRANSPORT AND TRANSIT OF THE WELDING MACHINE
The machine is equipped with a handle to easy transportation. Be careful not to underestimate the weight of the machine. The
handle cannot be used to hang or attach the machine on something else.
Do not use the cables or torch to move the machine. The welding equipment must be moved in an upright position.
Never lift the machine while there is a gas cylinder on the support shelf. The transport rules applying to each item are different.
Do not place/carry the unit over people or objects.
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Translation of the original
instructions
PROTIG 250 DC TRI