Bosch PBH 2800 RE Original Instructions Manual page 19

OBJ_BUCH-318-005.book Page 19 Wednesday, December 19, 2012 1:09 PM
– Tightly hold the rear sleeve of the keyless chuck 23 and
firmly turn the front sleeve clockwise by hand until the
locking action is no longer heard. This automatically locks
the drill chuck.
– Check the tight seating by pulling the tool.
Note: If the tool holder was opened to the stop, then a latch-
ing noise possibly may be heard while closing the tool holder
and the tool holder will not close.
In this case, turn the front sleeve 25 once in anticlockwise di-
rection. Afterwards, the tool holder can be closed (tight-
ened).
– Turn the mode selector switch 12 to the "drilling" position.
Removing Drilling Tools without SDS-plus from the Key-
less Chuck (PBH 2900 FRE/PBH 3000 FRE Set/
PBH 3000-2 FRE) (see figure J)
– Firmly hold the rear sleeve 26 of the keyless chuck and
turn the front sleeve 25 of the keyless chuck in anticlock-
wise direction until the drilling tool can be removed.
Dust Extraction with the Dust Extraction Attach-
ment (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 reactions 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 connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suita-
ble 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 workplace. Dusts can
easily ignite.
Mounting the Dust Extraction Attachment (see figure K)
For dust extraction, the dust extraction attachment (accesso-
ry) 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 15 and remove
the depth stop 18. Press button 15 again and insert the
dust extraction attachment into the auxiliary handle 17
from the front.
– Connect an extraction hose (diameter 19 mm, accessory)
to the extraction sleeve 27 of the dust extraction attach-
ment.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
Bosch Power Tools
Adjusting the Drilling Depth on the Dust Extraction At-
tachment (see figure L)
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 3. Otherwise, the movability of the SDS-
plus drilling tool can lead to incorrect adjustment of the
drilling depth.
– Loosen the wing bolt 31 on the dust extraction attach-
ment.
– 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 32 of the dust extraction at-
tachment in its holding fixture in such a manner that the
head of the dust extraction attachment faces against the
surface to be drilled. Do not slide the guide pipe 32 further
over the telescopic pipe 30 of the dust extraction attach-
ment than required, so that as much as possible of the
scale 30 on the telescopic pipe remains visible.
– Retighten the wing bolt 31 again. Loosen the clamping
screw 28 on the depth stop of the dust extraction attach-
ment.
– Move the depth stop 29 on the telescopic pipe 30 in such
a manner that the clearance X shown in the figure corre-
sponds with the required drilling depth.
– Tighten the clamping screw 28 in this position.
Operation
Starting Operation
 Observe correct mains voltage! The voltage of the pow-
er 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
The operating mode of the power tool is selected with the
mode selector switch 12.
Note: Change the operating mode only when the machine is
switched off! Otherwise, the machine can be damaged.
– To change the operating mode, push the release button 11
and turn the mode selector switch 12 to the requested po-
sition until it can be heard to latch.
PBH 2800 RE/PBH 2900 RE/PBH 2900 FRE/
PBH 3000 FRE Set
Position for drilling without impact in
wood, metal, ceramic and plastic as well as
for screwdriving and thread cutting
Position for hammer drilling in concrete or
stone
English | 19
1 609 92A 04D | (19.12.12)