The sound power level is measured pursuant to EN ISO 3746 with the following deviati-
ons:
– the correction factor for the background noise is max. 4 dB,
– at each measuring point, the balance between the noise level of the background noise
and the machine noise level is greater than 6 dB,
– the distance between the surface area of the machine and the measuring area is 1 m,
– there are 9 measuring points,
– the measuring duration is equivalent to one machining cycle.
The sound power level of the workplace-related emission value is measured pursuant to
EN ISO 11202 with the following deviations:
– the correction factor for the background at the measuring area as well as at the work-
place is max. 4 dB,
– the balance between the noise level of the background noise and the noise level at the
workplace is greater than 6 dB,
– the correction factor at the workplace is calculated pursuant to Annex 2 of EN ISO
11204.
Measurement on the basis of the following operating conditions:
Tenon cutting:
Cutting of a straight tenon with a thickness of 40 mm (1 9/16 in.) and a length of 40 mm
(1 9/16 in.) at a 180 x 160 mm (7 x 6 1/4 in.) workpiece of fir wood with the serial tool
and the specified speed of 6260 rpm (load speed).
Flattening:
Flattening at a 180 x 160 mm (7 x 6 1/4 in.) fir wood workpiece at half the workpiece
height (i.e. 80 mm) to a depth of 70 mm (2 3/4 in) with the serial tool (with cutter ring re-
moved) and the specified speed of 6260 rpm (load speed).
The specified values are emission levels and not necessarily levels for safe operation. Ir-
respective of the existence of a correlation between the emission and the immission le-
vels, these values cannot be used as a reliable decision basis regarding the need for ad-
ditional precautions. The factors affecting the immission level at a workplace at a given
time comprise the duration of the exposure, the properties of the premises, other noise
sources etc., such as for instance the number of machines and other adjacent proces-
sing operations. Furthermore, the permissible immission level may differ from country to
country. Nevertheless, this data gives the machine operator valuable information for a
better estimation of the risks and dangers of the tenon cutting machine.
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