Trumpf BEO D50, Руководство оператора

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Hot surfaces on the bottom side of the focusing optics
may burn your skin.
Ø Avoid contact with hot surfaces.
Ø Let the focusing optics cool down before carrying out main-
tenance or cleaning work.
4.4 Noise
The use of focusing optics in conjunction with lasers and assist
gas produces noise.
Sources of noise in the area of the focusing optics include:
■ Material that evaporates as a result of the exposure to laser
light.
■ Cutting gas or shielding gas passed to the processing point.
■ Compressed air coming out of the crossjet.
During laser welding, compressed air comes out of a nozzle,
called
crossjet , transversely to the direction of the laser beam.
If a crossjet is present, it is often the biggest source of noise.
Measurements have given values > 90 dB(A).
High noise level when operating a focusing optics,
especially when using a crossjet!
Noise can result in permanent ear damage and other
unfavorable consequences to health, especially upon
prolonged exposure.
Ø Surround the processing point with a protective cover that is
sufficiently silencing.
Ø
Wear ear protection if the noise levels are high.
Ø Operate the focusing optics only with the silencing protec-
tive cover closed, if possible.
The room in which a focusing optics is operated should have
the following characteristics:
■ The processing point should be as far away as possible
from places where people stay permanently.
■ Walls and devices are particularly good absorbers of noise.
■ The areas that are at risk from noise are labeled.
■ Ear protection devices are available in sufficient numbers.
22-50-17-CRen 2020-01 Hazards
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CAUTION
Focusing optics
WARNING