Bosch Professional GBM 32-4 Manual Original página 13

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OBJ_BUCH-506-002.book Page 13 Monday, November 28, 2011 2:34 PM
Declaration of Conformity
We declare under our sole responsibility that the product de-
scribed under "Technical Data" is in conformity with the fol-
lowing standards or standardization documents: EN 60745
according to the provisions of the directives 2011/65/EU,
2004/108/EC, 2006/42/EC.
Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ETM9,
D-70745 Leinfelden-Echterdingen
Dr. Egbert Schneider
Dr. Eckerhard Strötgen
Senior Vice President
Engineering Director
Engineering
PT/ESI
Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
07.11.2011
Assembly
Before any work on the machine itself, pull the mains
plug.
Auxiliary Handle
Operate your machine only with the auxiliary handle 5.
Screw the auxiliary handle 5 into the thread 4 on the gear head.
Changing the Tool (see figure A)
Drilling tools with a MK3 morse taper can be inserted directly
into the tool holder 1. For drill bits with MK2 morse taper, use
the reducing sleeve 10.
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 12. For this, screw the tapered arbor 11 onto
the key chuck 12 and insert the tapered arbor with the reduc-
ing sleeve 10 into the tool holder 1.
Do not exert any force when inserting the morse taper
or the tapered arbor. This can damage the tool holder and
the inserted tool.
Place the drift 9 into the opening 2 in such a manner that the
rounded-off side faces to the auxiliary handle 5.
If the drift 9 cannot be inserted through the drive spindle, turn
the tool insert a little.
Press the drift 9 toward the auxiliary handle 5 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.
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.
Bosch Power Tools
– 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 3 only when the machine is at
a standstill.
Four speed ranges can be preselected with the gear selector
3. Press the gear selector 3 down, slide it to the requested
setting according to the gearing diagram and allow it to en-
gage at the respective end position.
1st gear:
Low speed range; for working with
large drilling diameter.
2nd gear:
Average speed range.
3rd gear:
Average speed range.
4th gear:
High speed range; for working with
small drilling diameter.
If the gear selector 3 cannot be slid to the stop, lightly rotate
the drive spindle via the drill bit.
Switching On and Off
To start the machine, press the On/Off switch 7 and keep it
pressed.
To lock the pressed On/Off switch 7, press the lock-on button 6.
To switch off the machine, release the On/Off switch 7 or
when it is locked with the lock-on button 6, briefly press the
On/Off switch 7 and then release it.
English | 13
1 619 929 K12 | (28.11.11)

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