Metabo SPA 2002 Serie Manual Original página 12

en ENGLISH
(The sound pressure level was measured in free
field, at nominal volume flow and without material
transport.)
The impact of the transported dust and chips on
the walls of the pipeline system can lead to a level
increase of up to 10 dB, and in some cases even
more, compared to the noise emission measured
in the pipeline system without dust and chips being
transported.
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