GYS ARCPULL 200 Manual De Instrucciones página 26

Operating manual
ELECTROMAGNETIC EMISSIONS
An electric current passing through any conductor produces localised electric and magnetic fields (EMF). The
welding current produces an electromagnetic field around the welding circuit and the welding equipment.
Electromagnetic fields (EMFs) can interfere with some medical devices, pacemakers for example. Protective measures must be taken
for people with medical implants. For example, restricted access for spectators, or an individual risk assessment for welders.
All welders should use the following guidelines to minimise exposure to the welding circuit's electromagnetic fields:
• position the welding cables together – secure them with a clip, if possible;
• position yourself (head and body) as far away from the welding circuit as possible;
• never wrap the welding cables around your body;
• do not position yourself between the welding cables. Place both welding cables on the same side of the body;
• connect the return cable to the workpiece as close as possible to the area that will be welded;
• do not work directly next to the welding power source, Do not sit on it or lean against it;
• do not transport the welding power source or wire feeder while welding�
Pacemaker users should consult a doctor before using this equipment.
Exposure to electromagnetic fields during welding may have other health effects that are not yet known.
RECOMMENDATIONS TO ASSESS THE WELDING AREA AND WELDING INSTALLATION
General Information
It is the user's responsibilit to install and use the arc welding equipment according to the manufacturer's instructions. If electro-
magnetic interference is detected, it is the user's responsiblity to resolve the situation using the manufacturer's technical support. In
some cases, this corrective action may be as simple as earthing the welding circuit. In other cases, it may be necessary to electro-
magnetically shield the welding power source and the workpiece as a whole by installing input filters. In all cases, electromagnetic
interference should be reduced until it is no longer a concern�
Assessing the welding area
Before installing arc welding equipment, the user should assess the potential electromagnetic problems in the surrounding area. The
following should be taken into account:
a) the presence above, below and next to the arc welding equipment of other power cables, control cables, signal or telephone
cables;
b) radio and television receivers and transmitters;
c) computers and other control equipment,
d) critical safety equipment, for example, industrial equipment protection;
e) the well-being of nearby persons, for example, those using of pacemakers or hearing aids,
f) the equipment used for calibrating or measuring;
g) the protection of other surrounding equipment.
The operator has to ensure that the devices and equipment used in the same area are compatible with each other. This may require
further protective measures;
h) the time of day when welding or other operations are to be carried out.
The size of the surrounding area to be taken into account will depend on the building's structure and the other activities taking place
there. The surrounding area may extend beyond the boundaries of the premises.
Assessment of the welding equipment
In addition to assessing the area, the arc welding equipment's assessment can be used to identify and resolve cases of interference.
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. The mains power grid: Arc welding equipment should be connected to the mains power grid according to the manufacturer's
recommendations. If interference occurs, it may be necessary to take additional precautionary measures such as filtering the mains
power supply. Consider protecting the power cables of permanently installed arc welding equipment within a metal pipe or a similar
casing� The power cable should be protected along its entire length� The shield should be connected to the welding power source to
ensure that there is good electrical contact between the conduit and the welding power source enclosure�
b. The maintenance of arc welding equipment: Arc welding equipment should be subject to routine maintenance as recom-
mended by the manufacturer. All access points, covers and service openings should be closed and properly locked when the arc wel-
ding equipment is in use. The arc welding equipment should not be modified in any way, except for those changes and adjustments
mentioned in the manufacturer's instructions. It is advisable, in general, the arc ignition and stabilization parts should be adjusted
and maintained according to the manufacturer's recommendations.
c. Welding cables: Cables should be as short as possible, placed close together either near or on the ground.
d. Equipotential bonding: Consideration should be given to linking all metal objects in the surrounding area. However, metal ob-
jects connected to the workpiece increase the risk of an electric shock to the operator if they touch both the metal objects and the
gun shaft It is necessary to insulate the operator from such metal objects.
e. Earthing the workpiece: In cases where the part to be welded is unearthed for electrical safety reasons or due to its size and
26
Translation of the original
instructions
ARCPULL 200