Bosch GBM 23-2 Professional Manuel d'instructions original - Page 8
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OBJ_BUCH-35-004.book Page 13 Monday, May 19, 2014 10:14 AM
Declaration of Conformity
We declare under our sole responsibility that the product de-
scribed under "Technical Data" is in conformity with all rele-
vant provisions of the directives 2011/65/EU, 2014/30/EU,
2006/42/EC including their amendments and complies with
the following standards: EN 60745-1, EN 60745-2-1.
Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ETM9,
70764 Leinfelden-Echterdingen, GERMANY
Henk Becker
Helmut Heinzelmann
Executive Vice President
Head of Product Certification
Engineering
PT/ETM9
Robert Bosch GmbH, Power Tools Division
70764 Leinfelden-Echterdingen, GERMANY
31.03.2014
Assembly
Before any work on the machine itself, pull the mains
plug.
Auxiliary Handle
Operate your machine only with the auxiliary 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 inserted 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.
Before removing the inserted tool, unscrew the auxiliary han-
dle 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. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Bosch Power Tools
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Operation
Starting Operation
Observe correct mains voltage! The voltage of the pow-
er 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.
1st gear:
Low speed range; for working with large drill-
ing diameter.
2nd gear:
Higher speed range; for working with small
drilling diameter.
If the gear selector 7 cannot be fully engaged, lightly rotate
the drive spindle with the drill bit by twisting the drill chuck.
Switching On and Off
To start the machine, press the On/Off switch 6 and keep it
pressed.
Lock the pushed On/Off switch 6 by
pushing the lock-on button 5 upward.
To switch off the machine, release the On/Off switch 6 or
when it is locked with the lock-on button 5, briefly press the
On/Off switch 6 and then release it.
To save energy, only switch the power tool on when using it.
English | 13
1 609 92A 0NA | (19.5.14)