Bedienungsanleitung Bosch gsb 21 2 rct (Seite 23 von 155) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Türkisch, Schwedisch, Norwegisch, Finnisch)

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Bosch Power Tools 2 609 932 659 | (4.2.09)

Mounting the Drill Chuck (see figure F)

The keyless chuck/key type drill chuck is mount-

ed in reverse order.

f Remove the steel pin from the drill hole on

the spindle neck after mounting is complet-

ed.

The drill chuck must be tightened with

a tightening torque of approx.

40–45 Nm.

Dust/Chip Extraction

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.

– 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.

Operation

Starting Operation

f 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.

Reversing the Rotational Direction

(see figures G–H)

f Actuate the rotational direction switch 5

only when the machine is at a standstill.

The rotational direction switch 5 is used to re-

verse the rotational direction of the machine.

However, this is not possible with the On/Off

switch 8 actuated.

Right rotation: For drilling and driving in

screws, push the rotational direction switch 5

downward on the left side and at the same time

upward on the right side.

Left rotation: For loosening and unscrewing

screws and nuts, push the rotational direction

switch 5 upward on the left side and at the same

time downward on the right side.

Setting the Operating Mode

Drilling and Screwdriving

Set the selector switch 2 to the

“Drilling” symbol.

Impact Drilling

Set the selector switch 2 to the “Im-

pact drilling” symbol.

The selector switch 2 engages no-

ticeably and can also be actuated with the ma-

chine running.

Gear Selection, Mechanical

f The gear selector 10 can be actuated on ma-

chines running at low speed. However, this

should not be done when the machine is

stopped, at full load or running at maximum

speed.

Two speed ranges can be preselected with the

gear selector 10.

Gear I:

Low speed range; for working with

large drilling diameter or for driv-

ing in screws.

Gear II:

High speed range; for working with

small drilling diameter.

If the gear selector 10 cannot be fully engaged,

lightly rotate the drive spindle with the drill bit

by twisting the drill chuck.

OBJ_BUCH-909-001.book Page 23 Wednesday, February 4, 2009 7:50 AM

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