Manual Bosch GSB 18V-90 C (page 20 of 283) (All languages)

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20 | English

Open the keyless chuck (2) by turning it in the direction of

rotation  until the tool can be inserted. Insert the tool.

Firmly tighten the keyless chuck (2) by turning it by hand in

the direction of rotation . This will automatically lock the

drill chuck.

Dust/Chip Extraction

Dust 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 dust can cause allergic

reactions and/or lead to respiratory infections of the user or

bystanders.

Certain dust, such as oak or beech dust, is considered carci-

nogenic, especially in connection with wood-treatment ad-

ditives (chromate, wood preservative). Materials containing

asbestos may only be worked by specialists.

– 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 ma-

terials to be worked.

uAvoid dust accumulation at the workplace. Dust can

easily ignite.

Operation

Starting Operation

Inserting the battery

Note: The use of batteries unsuitable for your power tool can

lead to malfunctions or damage to the power tool.

Set the rotational direction switch (11) to the middle posi-

tion to avoid unintentionally switching it on. Insert the

charged battery (7) into the handle until you feel it engage

and it is flush with the handle.

Setting the rotational direction (see figure B)

The rotational direction switch (11) is used to change the ro-

tational direction of the power tool. However, this is not pos-

sible while the on/off switch (12) is being pressed.

Rotate clockwise: Slide the rotational direction

switch (11) on both sides until it stops in the posi-

tion.

Rotate anti-clockwise: Slide the rotational direction

switch (11) on both sides until it stops in the posi-

tion.

Setting the operating mode

Drilling

GSR 18V-90 C

Set the torque presetting ring(3) to the

"drilling" symbol.

GSB 18V-90 C

Set the operating mode presetting ring(4) to

the "drilling" symbol.

Screwdriving

GSR 18V-90 C

Set the torque presetting ring(3) to the re-

quired torque.

GSB 18V-90 C

Set the operating mode presetting ring(4) to

the "screwdriving" symbol.

Set the torque presetting ring(3) to the re-

quired torque.

Impact drilling

GSB 18V-90 C

Set the operating mode presetting ring(4) to

the "impact drilling" symbol.

Switching on/off

To start the power tool, press and hold the on/off switch

(12).

The LED (18) lights up when the on/off switch (12) is lightly

or fully pressed, meaning that the work area is illuminated in

poor lighting conditions.

To switch off the power tool, release the on/off switch (12).

Adjusting the speed

You can adjust the speed of the power tool when it is on by

pressing in the on/off switch (12) to varying extents.

A light pressure on the on/off switch (12) results in a low ro-

tational speed. Increased pressure on the switch causes an

increase in speed.

Preselecting torque (applies to screwdriving mode)

When the precision clutch is activated, you can pre-set the

required torque over 20 increments using the torque pre-

setting ring(3). Once the set torque has been reached, the

application tool will be stopped. When the precision clutch is

deactivated, the clutch will be released and the application

tool will not be stopped.

Mechanical gear selection

uOnly operate the gear selector (5) when the power

tool is not in use.

First gear:

Low speed range; for working with a large drilling diameter

or for screwdriving.

Second gear:

High speed range; for working with a small drilling diameter.

Temperature-dependent overload protection

When used as intended, the power tool cannot be over-

loaded. If the power tool is overloaded or not kept within the

permitted operating temperature range, the speed is re-

duced or the power tool is switched off. The power tool will

not run at full speed again until the permitted operating tem-

perature has been reached.

Activation of the temperature-controlled overload protector

is indicated by the LED (15) on the power tool lighting up

red.

– To return to within the permitted operating temperature

range, run the power tool at no load or wait until the

LED(15) lights up green again.

1 609 92A 6GU | (23.06.2022) Bosch Power Tools

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Bosch GSB 18V-90 C Manual

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