SAC T120, Инструкция по эксплуатации и обслуживанию

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T120C
15
2.7 RESIDUAL RISKS
Even with the guards installed and operating correctly, the machine can originate the
following residual risks:
•
breaking of a tool while machining;
•
breaking of the piece being machined;
•
electric shock;
•
noise exposure, above all if the indicated personal protection devices are not
used;
•
emission of dust, above all if the suction system is not correctly connected and
maintained.
2.8 ENVIRONMENTAL SAFETY
2.8.1 Noise emission
The operating conditions for measuring the noise meet the enclosure D of ISO 7960:
1995.
The acoustic power levels have been measured according to the measuring method
using the developed surface shown in EN ISO 3746: 1995.
The acoustic emission pressure level at the operator’s seat has been measured ac-
cording to EN ISO 11202: 1996.
T120
Empty without
suction
Operating with
suction
Emitted acoustic power
level dB(A)
86.1 90.0
Acoustic pressure level in
the working place dB(A)
74.7 80.0
Inaccuracy constant of the measurement K = 4 dB.
The reported noise levels are referred to ”free field” conditions, in compliance with the
test methods expected in the reference norm, EN 848-1: 1998.
The reported noise levels are emission levels and do not represent safe operation le-
vels. Although there is a relation between emission levels and exposure levels, this
cannot be reliable for stating whether further precautions are needed or not. The fac-
tors determining the exposure level of the work staff include exposure time, features
of the working place, other noise sources, etc..., i.e. the number of machines and other
adjacent processes. The allowed exposure levels may be different depending on the
country, too. However, this information will allow the machine operator to better evalu-
ate the danger and the risk.
Some factors reducing the exposure to noise are: