In accordance to EU Directive 78/764/EC the following table shows vibration levels measured on seats, in aws.
* aws = correct weighted value of the vibration acceleration (m/s
2
)
Operator's Vibration level
Seat type
Directive of The European
Parliament and of the Council
Light-weight operator Heavy-weight opeartor
W08SS 78/764/EEC
0.83 m/s
2
0.75 m/s
2
More information on Whole Body Vibration (WBV) on agricultural tractors can be found in more specic
publications and the relative risks can be taken into account following the laws of the country. In order to
correctly estimate statistical values based on your daily work on the tractor, a specic measure instrument
is required, such a three-axis accelerometer applied to the seat
IMPORTANT
The vibration level transmitted to the body as a whole depend on different parameters, some of them relating to
the machine, others to the terrain and many specic for the operator. The prevailing parameters are the type of
terrain or work surface and the ground speed.
Vibrations cause discomfort for the operator and in some cases put his/her health and safety at risk.
Make sure that the tractor is in good condition and that all routine servicing is correctly and regularly carried out.
Check tire pressure and the steering and braking systems.
Check that the operator's seat and adjustment systems are in good condition, then adjust the seat to the opera
-
tor's weight and size.
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WARNING
VIBRATION LEVELS OF THE TRACTOR EXPOSITION TO VIBRATIONS
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