Hilti SID 4-A22 Manual Del Usuario página 25

compare one electric tool with another. They may be used for a preliminary
assessment of exposure.
The data given represents the main applications of the electric tool. However,
if the electric tool is used for different applications, with different accessory
tools, or is poorly maintained, the data may vary. This may significantly
increase exposure over the total working period.
An accurate estimation of exposure should also take into account the times
when the power tool is switched off, or when it is running but not actually
being used for a job. This may significantly reduce exposure over the total
working period.
Identify additional safety measures to protect the operator from the effects
of noise and/or vibration, for example: maintaining the power tool and
accessory tools, keeping the hands warm, organization of work patterns.
Noise information in accordance with EN 60745
Sound (power) level (L
Uncertainty for the sound power level (K
Emission sound pressure level (L
Uncertainty for the sound pressure level (K
Total vibration (vector sum of three directions), measured in accor-
dance with EN 60745
Vibration emission value when tightening
screws/bolts and nuts of the maximum
permitted size (a
h
Uncertainty for tightening screws/bolts and
nuts of the maximum permitted size
5 Operation
5.1 Inserting the battery
WARNING
Risk of injury! Inadvertent starting of the impact screwdriver.
▶ Before fitting the battery, check that the cordless impact screwdriver
is switched off and that the forward/reverse switch is in the middle
position (i.e. safety lock engaged).
WARNING
Electrical hazards! Risk of short circuiting.
▶ Before inserting the battery, check to ensure that the battery terminals
and the contacts in the impact screwdriver are free from foreign
objects.
Printed: 27.09.2016 | Doc-Nr: PUB / 5293888 / 000 / 01
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)
WA
)
pA
)
2
98 dB(A)
) 3 dB(A)
WA
87 dB(A)
) 3 dB(A)
pA
12 m/s²
1.5 m/s²
English 21