Bosch GBH 2-23 S Professional Original Instructions Manual page 10

OBJ_BUCH-1281-002.book Page 10 Tuesday, October 12, 2010 3:05 PM
10 | English
Removing Drilling Tools without SDS-plus
– Turn the sleeve of the key type drill chuck 14
with the drill chuck key in anticlockwise di-
rection until the drilling tool can be removed.
Dust Extraction with the Dust Extrac-
tion Attachment (Accessory)
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.
– As far as possible, use a dust extraction
system suitable for the material.
– 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.
Prevent dust accumulation at the work-
place. Dusts can easily ignite.
Mounting the Dust Extraction Attachment
(see figure F)
For dust extraction, the dust extraction attach-
ment (accessory) is required. When drilling, the
dust extraction attachment retracts so that the
attachment head is always close to the surface
at the drill hole.
– Press the button for depth stop adjustment 9
and remove the depth stop 10. Press button
9 again and insert the dust extraction attach-
ment into the auxiliary handle 11 from the
front.
– Connect an extraction hose (diameter
19 mm, accessory) to the extraction sleeve
16 of the dust extraction attachment.
1 619 P09 069 | (12.10.10)
The vacuum cleaner must be suitable for the ma-
terial being worked.
When vacuuming dry dust that is especially det-
rimental to health or carcinogenic, use a special
vacuum cleaner.
Adjusting the Drilling Depth on the Dust Ex-
traction Attachment (see figure G)
The required drilling depth X can also be adjust-
ed when the dust extraction attachment is
mounted.
– Insert the SDS-plus drilling tool to the stop
into the SDS-plus tool holder 1. Otherwise,
the movability of the SDS-plus drilling tool
can lead to incorrect adjustment of the drill-
ing depth.
– Loosen the wing bolt 20 on the dust extrac-
tion attachment.
– Without switching the power tool on, apply it
firmly to the drilling location. The SDS-plus
drilling tool must face against the surface.
– Position the the guide pipe 21 of the dust ex-
traction attachment in its holding fixture in
such a manner that the head of the dust ex-
traction attachment faces against the surface
to be drilled. Do not slide the guide pipe 21
further over the telescopic pipe 19 of the
dust extraction attachment than required, so
that as much as possible of the scale 19 on
the telescopic pipe remains visible.
– Retighten the wing bolt 20 again. Loosen the
clamping screw 17 on the depth stop of the
dust extraction attachment.
– Move the depth stop 18 on the telescopic
pipe 19 in such a manner that the
clearance X shown in the figure corresponds
with the required drilling depth.
– Tighten the clamping screw 17 in this posi-
tion.
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