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there is sensitive equipment at the same location, or if the site where the device
is installed is close to either radio or television receivers).
If this is the case, then the operator is obliged to take appropriate action to recti-
fy the situation.
Check and evaluate the immunity to interference of nearby devices according to
national and international regulations. Examples of equipment that may be sus-
ceptible to interference from the device include:
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-
-
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Supporting measures for avoidance of EMC problems:
1.
2.
3.
4.
5.
EMF measures
Electromagnetic fields may pose as yet unknown risks to health:
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Requirement for
Especially with ring lines, contaminated shielding gas can cause damage to
the shielding gas
equipment and reduce welding quality.
Meet the following requirements regarding shielding gas quality:
-
-
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Use filters if necessary.
Danger from
Shielding gas cylinders contain gas under pressure and can explode if damaged.
shielding gas cyl-
As the shielding gas cylinders are part of the welding equipment, they must be
inders
handled with the greatest of care.
Protect shielding gas cylinders containing compressed gas from excessive heat,
mechanical impact, slag, naked flames, sparks and arcs.
Mount the shielding gas cylinders vertically and secure according to instructions
to prevent them falling over.
16
Safety devices
Network, signal and data transfer lines
IT and telecommunications devices
Measuring and calibrating devices
Mains supply
-
If electromagnetic interference arises despite the correct mains connec-
tion, additional measures are necessary (e.g. use of a suitable line filter)
Welding power-leads
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must be kept as short as possible
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must be laid close together (to avoid EMF problems)
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must be kept well apart from other leads
Equipotential bonding
Earthing of the workpiece
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If necessary, establish an earth connection using suitable capacitors.
Shield, if necessary
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Shield other devices nearby
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Shield the entire welding installation
Effects on the health of persons in the vicinity, e.g. those with pacemakers
and hearing aids
Individuals with pacemakers must seek advice from their doctor before ap-
proaching the device or any welding that is in progress
For safety reasons, maintain as large a distance as possible between the
welding power-leads and the head/torso of the welder
Do not carry welding power-leads and hosepacks over the shoulders or wind
them around any part of the body
Solid particle size < 40 µm
Pressure condensation point < -20 °C
Max. oil content < 25 mg/m³
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