Use and maintenance manual
Chipping machine BF150
10
1.4.2
N
OISE LEVEL
The values quoted are emission levels and are not necessarily safe working levels.
Although there is a correlation between emission and exposure levels, this cannot be used reliably to
determine whether or not additional precautions are required. Factors influencing the current exposure
level of the workforce include the characteristics of the working environment, other noise sources etc.,
i.e., the number of adjacent machines and other processes. In addition, the allowable exposure level
may vary according to country. However, this information allows the machine user to make a better
danger and risk assessment.
Since the sound pressure level (
L
PA
) can vary significantly depending on the type of environment (more
or less reverberant) in which the machine is installed, the sound power level (L
WA
) emitted by the
machine is given, which is an absolute figure independent of the environment.
Cardan models
The measured values of L
pA
e L
wa
are as follows:
Sound power during cutting operation L
WA
dB(A) = 108.5
Sound power, no-load operation L
WA
dB(A) = 108.0
Uncertainty assured K = 4 dB
Sound pressure L
PA
dB(A) at operator's workstation during cutting operation = 90.5
Sound pressure L
PA
dB(A) at operator's workstation, no-load operation = 89.5
Regular maintenance of the machine and blades according to the instructions provided in the Use and
Maintenance Manual will keep noise emission levels low over time.
1.4.3
V
IBRATION LEVEL
The machine is designed and constructed to minimise operation-induced vibrations and the operator is
not affected by these because he is not standing on the machine.
The level of vibrations transmitted by the machine to the worker (HAV hand-arm system) during the
work phase (during cutting, the operator presses the piston release levers with both hands) is less than
2.5 m/s
2
.
1.4.4
D
UST EMISSION
Wood cutting operations are subject to the emission of wood shavings and dust. In particular, dust can
be dangerous if inhaled, and the risk can be increased by certain factors such as the type of wood
being processed, particularly dry weather and the presence of wind which increase the volatility of dust,
and in closed environments the presence of air currents.
Depending on how the machine is used and the type of wood being processed, the user company is
obliged to adopt the most appropriate protective measures in accordance with its own risk assessment,
such as the use of respiratory protective devices, the presence of localised or centralised suction
systems and regular cleaning of the workstation.
