25
7.1
Sound and vibration data
Noise emission pressure level:
The A-weighted emission sound pressure level
L
pAd
70 dB(A)
The associated Uncertainty
K
pA
2,5 dB
The A-weighted emission sound pressure level at the operating position is relative to 20μPa.
The declaration of noise emission is in conformance with EN-ISO 4781.
The measurements and calculations are executed in full conformance with EN-ISO 11202:2010 and EN-ISO 3437:2010.
There is no machine specific noise test code available.
Although the sound pressure level at the operators position does not exceed 80 dB(A), ear protection is still
strongly recommended when working with this machine.
Emission of hand-arm vibration:
Measured hand- arm vibration
a
hv
4,0 m/s²
Uncertainty
K
2,0 m/s²
Declaration in conformance with EN 12096: 1997
Measurement in conformance with vibration test code EN-ISO 20643: 2008 + Amd 1: 2012.
Expanded uncertainty K (EN 12096 annex B).
Time to reach EAV 2,5 m/s² A(8):
3 hours, 8 minutes.
Time to reach ELV 5 m/s² A(8):
12 hours, 30 minutes.
(Without the use vibration dampening measures.)
Because the value is above 2,5 m/s², we recommend to take measures to decrease hand-arm vibrations.
IMPORTANT NOTES:
The indicated values are measured on new machines. Sound and vibration levels will vary in different circumstances. Area
influences like open outside or closed inside space, ambient temperature, the surface to be treated, etc. will give different
values at all time and could increase the exposure level over the total working period.
The declared vibration and noise emission levels represents the main applications of the machine. However if the machine is
used with different accessories or poor maintenance, the vibration and noise emissions may differ. The values may be used
for a preliminary assessment of exposure.
For a precise estimate of the vibration and sound load, the times should also be considered during which the machine is
switched off or even running, but not actually in use. This may significantly decrease the exposure level of the operator over
the total working period.
Identify additional safety measures to protect the operator from the effects of vibration and noise such as: proper and
regular maintenance of the machine and the accessories, keeping the hands warm, provision of proper hearing protection
and organization of work patterns for example by using rotation schedules.
Tips for decreasing the exposure to hand- arm vibrations:
-Protect the hands with vibration dampening gloves
E12000 – Anti-vibration gloves
-Switch off the vibrating motor when driving backwards
-Use only sharp blades
-Proper maintenance of the machine
-Scheduled replacement of the shock absorbing machine parts
-Keep the hands warm
-Prepare a work schedule and plan in rest periods
