Operation Manual / A150-M56/66/57/67 - A155-M..
6 Operation and service / 6.1 Noise emission
© Copyright 2021 ABB. All rights reserved. HZTL4032_EN Rev.Q January 2021
6 Operation and service
6.1 Noise emission
WARNING
Danger due to noise
Exposure to noise can harm the hearing system, impair health and the psy-
chological state and may lead to lack of attention and irritation.
u When the engine is running, always wear ear protection.
u Always wear ear protection if the sound pressure level exceeds 85 dB(A).
Wear ear protection.
The emission sound pressure level (A-weighted) is measured at a distance of 1meter from
the turbocharger.
The highest value of the emission sound pressure level
1)
reaches a maximum of 105dB(A)
near the filter silencer. The following prerequisites must be fulfilled with regard to the tur-
bocharger to observe this limit value:
¡ Air-inlet system has been fitted
¡ All standard, noise-reducing measures
2)
have been fitted
¡ Bellows at the air outlet has been acoustically insulated by the enginebuilder (see Fig.27:
Noise insulation, bellows →51).
The enginebuilder is responsible for insulating the charge air/scavenging air line and the
charge air cooler.
1) Directive 2006/42/EC, 1.7.4.2 / u / Paragraphs 5 + 7 :
A-weighted emission sound pressure level
2) The enginebuilder must provide acoustically equivalent measures in case of deviating in-
sulation versions
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