SAFETY, NOISE AND VIBRATION PLATES 2.1.4 POSITION OF THE NOISE PLATES ON MACHINES WITH CANOPY The noise plates must always be legible and in good conditions; for this reason, if they are dirty with dust, oil or grease, it is nec- essary to clean them with a solution made of water and deter- gent. Do not use fuel, petrol or solvents. If the plates are damaged, ask for new ones to Komatsu or to your Komatsu Dealer. In case of replacement of a component provided with a noise plate, make sure that this plate is applied also on the new piece. EXTERNAL NOISE This value indicates the noise level outside the machine and re- fers to the noise perceived by persons in the vicinity of the work area.
2.1.5 VIBRATIONS TO WHICH THE OPERATOR IS SUBJECTED According to the results of the tests carried out to determine the vibrations transmitted to the operator by the ma- chine, the upper limbs are subjected to vibrations lower than 2.5 m/sq.sec., while the seated part of the body is subjected to vibrations lower than 0.5 m/sq.sec. 25