Bosch GBH 2-23 REA Professional Original Instructions Manual page 11

OBJ_BUCH-404-002.book Page 11 Friday, March 13, 2009 3:51 PM
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" symbol.
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 in-
fections 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.
Bosch Power Tools
To achieve optimum extraction results, please
observe the following notes:
– The drilling tool being used may not project
over the dust collector 17 or 29 (Example for
an SDS-plus drill bit: Max. total length approx.
160 mm, working length approx. 100 mm).
– Pay attention that the dust collector faces
flush against the workpiece or the wall. At
the same time, this makes working at a right
angle easier.
– After reaching the requested drilling depth,
first pull the drill bit out of the drill hole and
then switch the machine off.
– Check the condition of the filter element 23
regularly. Replace a damaged filter element
immediately.
Mounting/Removing the Dust Extraction
(see figure F)
To remove the dust extraction, push the release
button 10 and pull off the dust extraction to-
ward the front.
If required, pivot the auxiliary handle 12 to the
side.
To mount the dust extraction 14, slide it via the
guide grooves 21 onto the support guide of the
machine until it can be heard to engage.
Integrated Dust Extraction with Dust Box
(see figure G)
The filling level of the dust box 9 can easily be
checked through the transparent flap 22.
Empty the dust collector in good time, other-
wise the suction performance will be impaired.
For removal of the dust box 9, push the two un-
locking buttons 11 and pull the dust box down-
ward out of the dust extraction 14.
Before opening the dust box 9, gently strike or
tap it against a firm surface to loosen the dust
from the filter element 23.
Open the dust box flap 22 on the bottom side
and empty the dust box.
Check the filter element 23 for damage. Replace
it immediately when damaged.
Shut the dust box flap 22 and reinsert the dust
box from below into the dust extraction 14 until
it can be heard to engage.
1 619 P07 080 | (13.3.09)
English | 11