EWM Tetrix 451 AC/DC Smart 2.0 FW Operating Instructions Manual page 9

Fire hazard!
Due to the high temperatures, sparks, glowing parts and hot slag that occur during
welding, there is a risk of flames.
•
Be watchful of potential sources of fire in the working area!
•
Do not carry any easily inflammable objects, e.g. matches or lighters.
•
Ensure suitable fire extinguishers are available in the working area!
•
Thoroughly remove any residue of flammable materials from the workpiece prior to starting
to weld.
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Only further process workpieces after they have cooled down. Do not allow them to contact
any flammable materials!
Smoke and gases!
Smoke and gases can lead to breathing difficulties and poisoning. In addition, solvent
vapour (chlorinated hydrocarbon) may be converted into poisonous phosgene due to
the ultraviolet radiation of the arc!
•
Ensure that there is sufficient fresh air!
•
Keep solvent vapour away from the arc beam field!
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Wear suitable breathing apparatus if appropriate!
Noise exposure!
Noise exceeding 70 dBA can cause permanent hearing damage!
•
Wear suitable ear protection!
•
Persons located within the working area must wear suitable ear protection!
According to IEC 60974-10, welding machines are divided into two classes of
electromagnetic compatibility (the EMC class can be found in the Technical
data) > see 8 chapter:
Class A machines are not intended for use in residential areas where the power supply comes
from the low-voltage public mains network. When ensuring the electromagnetic compatibility of
class A machines, difficulties can arise in these areas due to interference not only in the supply
lines but also in the form of radiated interference.
Class B machines fulfil the EMC requirements in industrial as well as residential areas,
including residential areas connected to the low-voltage public mains network.
Setting up and operating
When operating arc welding systems, in some cases, electro-magnetic interference can occur
although all of the welding machines comply with the emission limits specified in the standard.
The user is responsible for any interference caused by welding.
In order to evaluate any possible problems with electromagnetic compatibility in the
surrounding area, the user must consider the following: (see also EN 60974-10 Appendix A)
•
Mains, control, signal and telecommunication lines
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Radios and televisions
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Computers and other control systems
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Safety equipment
•
The health of neighbouring persons, especially if they have a pacemaker or wear a hearing
aid
•
Calibration and measuring equipment
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The immunity to interference of other equipment in the surrounding area
•
The time of day at which the welding work must be carried out
Recommendations for reducing interference emission
•
Mains connection, e.g. additional mains filter or shielding with a metal tube
•
Maintenance of the arc welding system
•
Welding leads should be as short as possible and run closely together along the ground
•
Potential equalization
•
Earthing of the workpiece. In cases where it is not possible to earth the workpiece directly,
it should be connected by means of suitable capacitors.
•
Shielding from other equipment in the surrounding area or the entire welding system
099-000251-EW501
27.10.2017
WARNING
CAUTION
For your safety
Safety instructions
9