Welding zone evaluation
Before installing capacitive discharge equipment, the user should assess any potential electromagnetic problems in the surrounding
area. The following should be taken into account:
a) the presence of power, control, signal and telephone cables above, below and next to the capacitive discharge unit;
b) radio and television receivers and transmitters;
c) computers and other control equipment;
d) critical safety equipment, e.g. the protection of industrial equipment;
e) the health of nearby persons, e.g. those using pacemakers or hearing aids;
f) equipment used for calibrating or measuring;
g) the sensitivity of other equipment in the surrounding area.
The user must ensure that other equipment installed in the vicinity is compatible. This may require further protective measures;
h) the time of day when welding or other tasks 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 facility.
Assessment of the welding equipment
In addition to assessing the area, evaluation of the capacitive discharge equipment installation can be used to identify and resolve
cases of interference. It is appropriate that the assessment of any emissions should include in situ measurements as specified in
Article 10 of CISPR 11. In-situ measurements can also be used to verify the effectiveness of any mitigation measures.
GUIDELINES ON HOW TO REDUCE ELECTROMAGNETIC EMISSIONS
a. The mains power grid: The capacitive discharge unit should be connected to the power supply network in accordance with the
manufacturer's recommendations. If any interference occurs, it may be necessary to take additional precautionary measures such as
filtering the mains power supply. With capacitive discharge equipment that is being permanently installed, consideration should be
given to shielding the power cable in metal ducting or an equivalent. 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. Maintenance of capacitive discharge equipment: Capacitive discharge equipment should be subject to routine maintenance
in accordance with the manufacturer's recommendations. All accesses, service doors and covers must be closed and properly locked
when the capacitive discharge machine is in use. The capacitive discharge unit must not be modified in any way, apart from the
modifications and adjustments specified in the manufacturer's instructions.
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
objects connected to the workpiece increase the risk of electric shocks to the user if they touch both these metal parts and the
electrode. It is necessary to insulate the operator from such metal objects.
e. Earthing the workpiece: In cases where the workpiece being welded is not earthed for electrical safety reasons or because of
its size and location (such as the hull of a ship or the structural steelwork of a building for example), an earthed connection can in
some instances, but not always, reduce emissions. Care must be taken to avoid earthing parts that could increase the risk of injury
to the user or cause damage to other electrical equipment. If necessary, the workpiece's connection should be earthed directly, but in
some countries where a direct connection is not allowed, the connection should be made with a suitable capacitor chosen according
to national regulations.
f. Protection and shielding: Selective shielding and protection of other cables and equipment in the surrounding area, may limit
interference problems. Protection and sheilding of the entire welding area may be required for certain specialist applications.
TRANSPORT AND TRANSIT OF THE WELDING POWER SOURCE
The welding power source is fitted with a top handle(s) for carrying / transporting by hand. Be careful not to underestimate
its weight. The handle(s) cannot be used for slinging.
Do not use the cables or torch to move the machine.
Do not carry the power source over the heads of people or objects.
EQUIPMENT INSTALLATION
• Provide sufficient space to ventilate the welding power source and access the controls.
• Do not use in an area with conductive metal dust.
• Power, extension, and welding cables must be completely unwound to avoid overheating.
The manufacturer assumes no responsibility for damage to persons or objects caused by improper and dangerous use
of this equipment.
MAINTENANCE / RECOMMENDATIONS
• Anyone using this machine needs to have received appropriate training in the use of the device, in order to get
the most out of its performance, and to carry out the work in accordance with the instructions
(e.g: panel beater training).
• Check which welding process is authorised by the manufacturer before attempting any vehicle repair.
GYSPOT ALU 66
EN
11