Declaration Of Conformity; Selecting Drill Chucks And Tools; Auxiliary Handle - Bosch Professional GBH 3-28 DRE Manual Original

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
Leinfelden, 10.10.2008
Assembly
Before any work on the machine itself, pull
the mains plug.

Auxiliary Handle

Operate your machine only with the auxiliary
handle 12.
Rotating the Auxiliary Handle (see figure A)
The auxiliary handle 12 can be set to any position
for a secure and low-fatigue working posture.
Turn the bottom part of the auxiliary handle 12
in counterclockwise direction and swivel the
auxiliary handle 12 to the desired position. Then
retighten the bottom part of the auxiliary handle
12 by turning in clockwise direction.
Pay attention that the clamping band of the
auxiliary handle is positioned in the groove on
the housing as intended for.
Bosch Power Tools
Dr. Eckerhard Strötgen
Head of Product
Certification
Adjusting the Drilling Depth (see figure B)
The required drilling depth X can be set with the
depth stop 11.
Press the button for the depth stop adjustment
10 and insert the depth stop into the auxiliary
handle 12.
The knurled surface of the depth stop 11 must
face downward.
Insert the SDS-plus drilling tool to the stop into
the SDS-plus tool holder 3. Otherwise, the mov-
ability of the SDS-plus drilling tool can lead to
incorrect adjustment of the drilling depth.
Pull out the depth stop until the distance
between the tip of the drill bit and the tip of the
depth stop correspond with the desired drilling
depth X.

Selecting Drill Chucks and Tools

Material
Concrete Ø 4–28
mm
SDS-plus
Brickwork Ø 40–82
mm
SDS-plus
Steel
–
Wood
–
English | 23
Operating Mode
SDS-plus
–
SDS-plus
–
Ø –13
mm
SDS-plus
–
Ø –30
mm
SDS-plus
–
1 619 929 E56 | (7.4.09)