22
| English
2 609 003 378 | (4.6.09)
Bosch Power Tools
Assembly
f
Before any work on the machine itself, pull
the mains plug.
Dust extraction
(PSB 850-2 RA/PSB 1000-2 RCA)
(see figures A
–
F)
f
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.
f
Use the dust/chip extraction only when
working concrete, brick and brickwork.
Wood or plastic chips can easily lead to clog-
ging.
f
WARNING Fire hazard! Do not work metal-
lic materials with the extraction device
mounted.
Hot metal chips can ignite parts of
the extraction device.
To achieve optimum extraction results, please
observe the following notes:
– Pay attention that the extraction device faces
flush against the workpiece or the wall. This
also makes drilling at a right angle easier.
– When using the extraction device, always
work with the maximum speed.
– After reaching the desired drilling depth, pull
the drill bit out of the drill hole first and then
switch off the impact drill.
– Use the extraction device only with the filter
element
18
mounted, as otherwise
dust/chips could access the interior of the
power tool and cause damage.
– Check the condition of the filter element
18
regularly. Replace a damaged filter element
immediately.
– The dust protection ring
20
can wear, espe-
cially when working with large drill-bit diam-
eters. Replace the dust protection ring when
worn/damaged.
Mounting the Extraction Device (see figure A)
Guide the extraction device
14
from the front to-
ward the bottom side of the impact drill. Pay at-
tention that the extraction device
14
faces flush
against the casing and that it is locked.
Cleaning the Extraction Device
(see figures B–D)
The dust collector
15
is sufficient for approx.
20 drillings with a drilling diameter of 10 mm.
When the extraction force diminishes the dust
collector
15
must be emptied. For this, press on
the riffled surface of the release button
17
and
take off the dust collector
15
.
Empty and clean the dust collector
15
. Clean the
filter element
18
by gently striking or tapping
against it.
Check the filter element
18
for damage and re-
place it as required.
Press on the holder of the filter element
18
and
pull it out. Replace the filter element
18
includ-
ing the holder. When placing on the holder
again, make sure that the rubber gasket
19
is in-
serted.
Reattach the dust collector
15
again and lock it
by pressing against the smooth surface of the
release button
17
.
OBJ_BUCH-875-001.book Page 22 Thursday, June 4, 2009 10:51 AM