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English - 4
Loosening the Drill Chuck
(see figure )
Place the machine on a stable surface (e. g.
workbench). Hold the machine firmly and loosen
the chuck by turning to the left, as when unscrew-
ing a screw (
). Loosen a tight chuck by giving
the long end of the Allen key 16 a sharp blow.
Tightening the Drill Chuck
(see figure )
The drill chuck is mounted in reverse order (
).
The chuck must be tightened with a torque of
approx. 3540 Nm.
Speed as well as torque setting depend on the
material and can be determined by practical test-
ing. Always start with the lowest setting.
After longer periods of working at low speed, al-
low the machine to cool down by running for ap-
prox. 3 minutes at maximum speed with no load.
For drilling in tiles, set the selector switch 2 to the
symbol “Drilling and Screwdriving”. Do not switch
over to the symbol “Impact Drilling” or work with
impact until after drilling through the tile.
Carbide tipped drill bits are required for jobs
when working in concrete, masonry and brick
wall.
Before any work on the machine itself, pull the
mains plug.
For safe and proper working, always keep the
machine and the ventilation slots clean.
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts orders,
please always include the 10-digit order number
given on the nameplate of the machine.
WARNING! Important instructions for con-
necting a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to
the following code:
Do not
connect the blue or brown wire to the
earth terminal of the plug.
Important: If for any reason the moulded plug is
removed from the cable of this machine, it must
be disposed of safely.
Measured values determined according to
EN 50 144.
Typically the A-weighted noise levels of the prod-
uct are: sound pressure level: 96 dB (A); sound
power level: 109 dB (A).
Wear hearing protection!
The typical weighted acceleration is 11 m/s
2
.
Recycle raw materials instead of disposing as
waste
The machine, accessories and packaging should
be sorted for environmental-friendly recycling.
These instructions are printed on recycled paper
manufactured without chlorine.
The plastic components are labelled for catego-
rized recycling.
We declare under our sole responsibility that
this product is in conformity with the following
standards or standardization documents:
EN 50 144 according to the provisions of the di-
rectives 89/336/EEC, 98/37/EC.
Dr. Gerhard Felten Dr. Eckerhard Strötgen
Senior Vice President Engineering Head of Product Certification
Robert Bosch GmbH, Geschäftsbereich Elektrowerkzeuge
Subject to change without notice
Tips
Maintenance and Cleaning
G
H
strain relief
live = brown
neutral = blue
To be fitted
by qualified
professional only
Noise/Vibration Information
Environmental Protection
Declaration of Conformity
11 • 2 609 932 245 • 02.07
11


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