Bosch GBH Professional 2-18 E Manual Original página 21

OBJ_BUCH-427-002.book Page 21 Tuesday, March 17, 2009 6:40 PM
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.
Mounting the Dust Extraction Attachment
(see figure G)
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 11. Press button 8
again and insert the dust extraction attachment
into the auxiliary handle 10 from the front.
Connect an extraction hose (diameter 19 mm,
accessory) to the extraction sleeve 15 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.
Adjusting the Drilling Depth on the Dust Ex-
traction Attachment (see figure H)
The required drilling depth X can also be adjusted
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 mov-
ability of the SDS-plus drilling tool can lead to
incorrect adjustment of the drilling depth.
Loosen the wing bolt 19 on the dust extraction
attachment.
Without switching the power tool on, apply it
firmly to the drilling location. The SDS-plus drill-
ing tool must face against the surface.
Bosch Power Tools
Position the the guide pipe 20 of the dust ex-
traction attachment in its holding fixture in such
a manner that the head of the dust extraction at-
tachment faces against the surface to be drilled.
Do not slide the guide pipe 20 further over the
telescopic pipe 18 of the dust extraction attach-
ment than required, so that as much as possible
of the scale 18 on the telescopic pipe remains
visible.
Retighten the wing bolt 19 again. Loosen the
clamping screw 16 on the depth stop of the dust
extraction attachment.
Move the depth stop 17 on the telescopic pipe
18 in such a manner that the clearance X shown
in the figure corresponds with the required drill-
ing depth.
Tighten the clamping screw 16 in this position.
Operation
Starting Operation
Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Setting the Operating Mode
With the selector switch for drilling/hammer
drilling 7, the operating mode of the machine
is selected.
Note: Change the operating mode only when the
machine is switched off! Otherwise, the ma-
chine can be damaged.
To change the operating mode, turn the selector
switch for "drilling/hammer drilling" 7 to the re-
quested position.
Position for hammer drilling in con-
crete or stone
Position for drilling without impact
in wood, metal, ceramic and plastic
as well as for screwdriving
1 619 P07 179 | (17.3.09)
English | 21