Case 580SR - Operator Vibration Exposure Information

SECTION 1
1-18
LEVEL OF VIBRATIONS TRANSMITTED TO THE OPERATOR
The vibration level transmitted to the operator
depends mainly on the conditions of the soil where
the machine is being operated and on the use con-
ditions of the machine and its equipment.
The exposure to vibrations can be remarkably
reduced if the recommendations here below are fol-
lowed:
- use equipment suitable for the machine and the
type of work to be carried out;
- adjust and lock the seat in the correct position;
regularly check for the seat suspensions and
carry out adjustments or maintenance as
required;
- carry out regularly the ordinary maintenance of
the machine at scheduled intervals;
- operate the attachment evenly, avoiding sudden
motion or extreme shocks, if possible;
- as far as possible, avoid travelling on particularly
uneven soils or the impact with possible obsta-
cles.
This machine is equipped with an operator’s seat
which meets the criteria of EN ISO 7096:2000 rep-
resenting vertical vibration input under severe but
typical operating conditions.
This seat is tested with the input spectral class
EM.6 and has a seat transmissibility factor SEAT =
<0.7.
The intent is to limit the operator’s exposure to
vibrations.
The exposure is dependant on machine operating
techniques and can be controlled by following the
instructions described in this manual.
The weighted average acceleration value to which
the operator’s arms are subjected does not exceed
2.5 m/s
2
(8.20 ft/s
2
).
The weighted average acceleration value to which
the operator’s body is subjected does not exceed
0.5 m/s
2
(1.64 ft/s
2
).
These results have been obtained by using an
acceleration gauge during the ditches excavation
works.
NOTE: the Whole-body exposure value is deter-
mined under particular operating and terrain condi-
tions and therefore may not be representative of all
the possible operating conditions within the
intended use of the machine. Consequently this sin-
gle vibration emission value is not intended to deter-
mine the whole-body vibration exposure as required
by European Directive 2002/44/EC. For this pur-
pose it is recommended to conduct actual working
condition measurement. If this is not feasible use of
information provided in the table below, from ISO/
TR 25398:2006 (*), is suggested.
(*) ISO/TR 25398:2006 Mechanical vibration -
Guideline for the assessment of exposure to whole-
body vibration of ride on operated earth-moving
machines - Using harmonized data measured by
international institutes, organizations and manufac-
turers.
Working condition
Average Standard deviation
1.4*a
w,eqx
m/s
2
(ft/s
2
)
1,4*
aw,eqy
m/s
2
(ft/s
2
)
a
w,eqz
m/s
2
(ft/s
2
)
1.4*S
x
m/s
2
(ft/s
2
)
1.4*S
y
m/s
2
(ft/s
2
)
S
z
m/s
2
(ft/s
2
)
Digging 0.44 (1.44) 0.27 (0.88) 0.30 (0.99) 0.24 (0.79) 0.16 (0.52) 0.17 (0.56)
Hydraulic breaker 0.53 (1.74) 0.31 (1.02) 0.55 (1.80) 0.30 (0.99) 0.18 (0.59) 0.28 (0.92)
Mine 0.65 (2.13) 0.42 (1.38) 0.61 (2.00) 0.21 (0.69) 0.15 (0.49) 0.32 (1.05)
Combined movements 0.48 (1.57) 0.32 (1.05) 0.79 (2.60) 0.19 (0.62) 0.20 (0.65) 0.23 (0.75)