Bosch GNF Professional 20 CA, Original Instructions Manual

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Bosch Power Tools 1 609 929 K57 | (27.11.07)
Noise/Vibration Information
The vibration emission level given in this infor-
mation sheet has been measured in accordance
with a standardised test given in EN 60745 and
may be used to compare one tool with another.
It may be used for a preliminary assessment of
exposure.
The declared vibration emission level repre-
sents the main applications of the tool. However
if the tool is used for different applications, with
different accessories or poorly maintained, the
vibration emission may differ. This may signifi-
cantly increase the exposure level over the total
working period.
An estimation of the level of exposure to vibra-
tion should also take into account the times
when the tool is switched off or when it is run-
ning but not actually doing the job. This may sig-
nificantly reduce the exposure level over the to-
tal working period.
Identify additional safety measures to protect
the operator from the effects of vibration such
as: maintain the tool and the accessories, keep
the hands warm, organisation of work patterns.
Declaration of Conformity
We declare under our sole responsibility that
the product described under “Technical Data” is
in conformity with the following standards or
standardization documents: EN 60745 accord-
ing to the provisions of the directives
2004/108/EC, 98/37/EC (until Dec. 28, 2009),
2006/42/EC (from Dec. 29, 2009 on).
Technical file at:
Robert Bosch GmbH, PT/ESC,
D-70745 Leinfelden-Echterdingen
22.10.2007, Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
Assembly
Dust extraction
f Dusts from materials such as lead-containing
coatings, some wood types, minerals and
metal can be harmful to one’s health. Touch-
ing or breathing-in the dusts can cause aller-
gic reactions and/or lead to respiratory infec-
tions of the user or bystanders.
Certain dusts, such as oak or beech dust, are
considered as carcinogenic, especially in
connection with wood-treatment additives
(chromate, wood preservative). Materials
containing asbestos may only be worked by
specialists.
– Use dust extraction whenever possible.
– Provide for good ventilation of the work-
ing place.
GNF 20 CA
Professional
GNF 35 CA
Professional
Measured values determined according to EN 60745 (lime-
sand brick).
Typically the A-weighted noise levels of the product are:
Sound pressure level
Sound power level
Uncertainty K=
Wear hearing protection!
dB(A)
dB(A)
dB
94
105
3
102
113
3
Vibration total values (triax vector sum) determined accord-
ing to EN 60745:
Vibration emission value a
h
Uncertainty K
m/s
2
m/s
2
=4.0
=1.5 =4.0
=1.5
Dr. Egbert Schneider
Senior Vice President
Engineering Dr. Eckerhard Strötgen
Head of Product
Certification
OBJ_BUCH-126-001.book Page 25 Tuesday, November 27, 2007 9:54 AM