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Starting Operation - Bosch GBH 2-24 RE Professional Originalbetriebsanleitung

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OBJ_BUCH-2460-001.book Page 17 Thursday, May 7, 2015 10:48 AM
– GBH 2-24 RE: Set the selector switch 16 to the "Drilling"
symbol.
– GBH 2-24 DRE: Turn the mode selector switch 11 to the
"drilling" position.
Removing Drilling Tools without SDS-plus
(GBH 2-24 RE/DRE)
– Turn the sleeve of the key type drill chuck 19 with the drill
chuck key in anticlockwise direction until the drilling tool
can be removed.
Inserting Drilling Tools without SDS-plus (GBH 2-24 DFR)
(see figure H)
Note: Do not use tools without SDS-plus for hammer drilling
or chiselling! Tools without SDS-plus and their drill chucks are
damaged by hammer drilling or chiselling.
– Insert the quick change keyless chuck 1.
– Firmly hold the retaining ring 23 of the quick change
chuck. Open the tool holder by turning the front sleeve 22
until the tool can be inserted. Tightly hold the retaining ring
23 and firmly turn the front sleeve 22 in the direction of the
arrow until a distinct latching noise can be heard.
– Check the tight seating by pulling the tool.
Note: If the tool holder was opened to the stop, then the 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 22 once in the opposite di-
rection of the arrow. Afterwards, the tool holder can be
closed (tightened) again.
– Turn the mode selector switch 11 to the "drilling" position.
Removing Drilling Tools without SDS-plus
(GBH 2-24 DFR) (see figure I)
– Firmly hold the retaining ring 23 of the quick change
chuck. Open the tool holder by turning the front sleeve 22
in the direction of the arrow until the 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 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 mate-
rials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Bosch Power Tools
Mounting the Dust Extraction Attachment (see figure J)
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 12 and remove
the depth stop 13. Press button 12 again and insert the
dust extraction attachment into the auxiliary handle 14
from the front.
– Connect an extraction hose (diameter 19 mm, accessory)
to the extraction sleeve 24 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.
Adjusting the Drilling Depth on the Dust Extraction At-
tachment (see figure K)
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 28 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 29 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 29 further
over the telescopic pipe 27 of the dust extraction attach-
ment than required, so that as much as possible of the
scale 27 on the telescopic pipe remains visible.
– Retighten the wing bolt 28 again. Loosen the clamping
screw 25 on the depth stop of the dust extraction attach-
ment.
– Move the depth stop 26 on the telescopic pipe 27 in such
a manner that the clearance X shown in the figure corre-
sponds with the required drilling depth.
– Tighten the clamping screw 25 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
GBH 2-24 RE:
With the selector switch for drilling/hammer drilling 16, the
operating mode of the machine is selected.
– To change the operating mode, press the release button
15 and turn the drilling/hammer drilling selector switch 16
to the desired position until it can be heard to latch.
English | 17
1 609 92A 170 | (7.5.15)

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