Changing The Tool; Dust Extraction - Bosch GBH 2-23 REA Professional Originalbetriebsanleitung

OBJ_BUCH-351-002.book Page 23 Thursday, March 12, 2009 10:41 AM

Changing the Tool

The dust protection cap 2 largely prevents the
entry of drilling dust into the tool holder during
operation. When inserting the tool, take care
that the dust protection cap 2 is not damaged.
A damaged dust protection cap should be
changed immediately. We recommend hav-
ing this carried out by an after-sales service.
Inserting SDS-plus Drilling Tools (see figure D)
The SDS-plus drill chuck allows for simple and
convenient changing of drilling tools without the
use of additional tools.
Clean and lightly grease the shank end of the tool.
Insert the tool in a twisting manner into the tool
holder until it latches itself.
Check the latching by pulling the tool.
As a requirement of the system, the SDS-plus
drilling tool can move freely. This causes a cer-
tain radial run-out at no-load, which has no ef-
fect on the accuracy of the drill hole, as the drill
bit centres itself upon drilling.
Removing SDS-plus Drilling Tools
(see figure E)
Push back the locking sleeve 3 and remove the
tool.
Inserting Drilling Tools without SDS-plus
Note: Do not use tools without SDS-plus for
hammer drilling or chiselling! Tools without
SDS-plus and their drill chucks are damaged by
hammer drilling or chiselling.
Insert a key type drill chuck 19 (see "Changing
the Key Type Drill Chuck", page 22).
Open the key type drill chuck 19 by turning until
the tool can be inserted. Insert the tool.
Insert the chuck key into the corresponding
holes of the key type drill chuck 19 and clamp
the tool uniformly.
Set the selector switch 4 to the "Drilling" sym-
bol.
Bosch Power Tools
Removing Drilling Tools without SDS-plus
Turn the sleeve of the key type drill chuck 19
with the drill chuck key in anticlockwise direc-
tion until the drilling tool can be removed.

Dust 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.
– Use dust extraction whenever possible.
– 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.
Warning! Danger of fire! Do not work metal
or wooden materials with the dust extrac-
tion mounted. Hot metal chips can self-ignite
or ignite parts of the dust extraction.
Note: Do not use the dust extraction 14 when
chiselling or screwdriving.
The dust extraction 14 retracts while working,
so that the dust collector is always kept close to
structural surface being drilled. The dust extrac-
tion automatically switches on and off with the
power tool.
1 619 P07 078 | (12.3.09)
English | 23