Bosch GBH Professional 2-24 DS Manual Original página 22

22 | English
Dust Extraction with the Dust
Extraction Attachment (Accessory)
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 reac-
tions 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 con-
nection with wood-treatment additives (chro-
mate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– As far as possible, use a dust extraction sys-
tem suitable for the material.
– 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 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 8
and remove the depth stop 9. Press button 8
again and insert the dust extraction attach-
ment into the auxiliary handle 10 from the
front.
– Connect an extraction hose (diameter
19 mm, accessory) to the extraction sleeve
16 of the dust extraction attachment.
The vacuum cleaner must be suitable for the
material being worked.
When vacuuming dry dust that is especially det-
rimental to health or carcinogenic, use a special
vacuum cleaner.
1 609 929 V31 | (20/10/10)
Adjusting the Drilling Depth on the Dust
Extraction 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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