Dust/Chip Extraction; Starting Operation - Bosch GBM Professional 23-2 Notice Originale

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 28 Dec 2009),
2006/42/EC (from 29 Dec 2009).
Technical file at:
Robert Bosch GmbH, PT/ESC,
D-70745 Leinfelden-Echterdingen
Dr. Egbert Schneider
Senior Vice President
Engineering
Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
26.10.2009
Assembly
Before any work on the machine itself, pull
the mains plug.
Auxiliary Handle
Operate your machine only with the auxilia-
ry handle 2.
Screw the auxiliary handle 2 into the thread 9 on
the gear head.
Changing the Tool
Drilling tools with a MK2 morse taper can be in-
serted directly into the tool holder 4. For drill
bits with MK1 morse taper, use the reducing
sleeve 11.
Pay attention that the morse cone and the
morse taper are free of grease.
The use of drilling tools with cylindrical shank is
possible with the key chuck 13. For this, place
the tapered arbor 12 into the tool holder 4 and
firmly screw on the key chuck 13.
Do not exert any force when inserting the
morse taper or the tapered arbor. This can
damage the tool holder and the inserted tool.
Bosch Power Tools
Dr. Eckerhard Strötgen
Head of Product
Certification
Before removing the inserted tool, unscrew the
auxiliary handle 2.
Place the drift 10 into the opening 3 in such a
manner that the rounded-off side faces to the
pressure plate 1.
If the drift 10 cannot be inserted through the
drive spindle, turn the tool insert a little.
Press the drift 10 toward the pressure plate 1
and release the tool insert from out of the tool
holder.

Dust/Chip Extraction

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.
– Provide for good ventilation of the work-
ing place.
– It is recommended to wear a P2 filter-
class respirator.
Observe the relevant regulations in your
country for the materials to be worked.
Operation

Starting Operation

Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Gear Selection, Mechanical
Actuate the gear selector 7 only when the
machine is at a standstill.
Two speed ranges can be preselected with the
gear selector 7.
English | 17
1 609 929 T43 | (12.11.09)