Manual Bosch PSR14-4LI2 (page 15 of 82) (English, German, Dutch, Danish, French, Italian, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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English | 15

Bosch Power Tools 2 609 003 396 | (30.9.11)

Reversing the Rotational Direction (see figure C)

The rotational direction switch 10 is used to reverse the rota-

tional direction of the machine. However, this is not possible

with the On/Off switch 11 actuated.

Right Rotation: For drilling and driving in screws, push the

rotational direction switch 10 left to the stop.

The indicator for right rotation 5 lights up when the

On/Off switch 11 is actuated and the motor is run-

ning.

Left Rotation: For loosening or unscrewing screws, push the

rotational direction switch 10 right to the stop.

The indicator for left rotation 6 lights up when the

On/Off switch 11 is actuated and the motor is run-

ning.

Setting the Torque

The required torque can be preselected in 25 steps with the

torque preselection ring 3. With the correct setting, the insert

tool is stopped as soon as the screw is screwed flush into the

material or when the set torque is reached.

Select a higher setting when driving out screws, or set to the

symbol “Drilling”.

Drilling

The safety clutch is deactivated in the “Drilling” position.

Gear Selection, Mechanical

f Actuate the gear selector 4 only when the machine is at

a standstill.

Two speed ranges can be preselected with the gear selector

Gear I:

Low speed range; for screwdriving or working

with large drilling diameter.

Gear II:

High speed range; for working with small drilling

diameter.

If the gear selector 4 cannot be fully engaged, lightly rotate

the drive spindle with the drill bit by twisting the drill chuck.

Switching On and Off

To start the machine, press the On/Off switch 11 and keep it

pressed.

The power light 8 lights up when the On/Off switch 11 is

slightly or completely pressed, and allows the work area to be

illuminated when lighting conditions are insufficient.

To switch off the machine, release the On/Off switch 11.

Adjusting the Speed

The speed of the switched on power tool can be variably ad-

justed, depending on how far the On/Off switch 11 is

pressed.

Light pressure on the On/Off switch 11 results in a low rota-

tional speed. Further pressure on the switch results in an in-

crease in speed.

Fully automatic spindle locking (Auto-lock)

When the On/Off switch 11 is not pressed, the drill spindle

and thus the tool holder are locked.

This enables screws to be screwed in, even when the battery

is empty and allows for the machine to be used as a screwdriv-

er.

Run-on Brake

When the On/Off switch 11 is released, the chuck brakes to a

stop, thus preventing the run-on of the tool.

When driving in screws, wait until the screw is screwed in

flush with the material and then release the On/Off switch 11.

By doing so, the head of the screw does not penetrate into the

material.

Battery Charge-control Indication

The battery charge-control indicator 9 consists of three green

LEDs, and indicates the charge condition of the battery for a

few seconds when the On/Off switch 11 is pressed halfway or

fully.

The 3 LEDs of the battery charge-control indicator 9 and the

Power Light 8 flash rapidly when the battery temperature is

not within the operating temperature range of –10 to +70°C.

Temperature Dependent Overload Protection

When using as intended for, the power tool cannot be subject

to overload. When the load is too high or the allowable battery

temperature of 70 °C is exceeded, the electronic control

switches off the power tool until the temperature is in the op-

timum temperature range again.

The 3 LEDs of the battery charge-control indicator 9 and the

“Power light” 8 flash rapidly when the battery temperature is

not within the operating temperature range of –10 to +70°C

and/or when the overload protection has actuated.

Protection Against Deep Discharging

The lithium-ion battery is protected against deep discharging

by the “Electronic Cell Protection (ECP)”. When the battery is

empty, the machine is switched off by means of a protective

circuit: The inserted tool no longer rotates.

Working Advice

f Apply the power tool to the screw only when it is

switched off. Rotating tool inserts can slip off.

After longer periods of working at low speed, allow the ma-

chine to cool down by running it for approx. 3 minutes at max-

imum speed with no load.

For drilling in metal, use only perfectly sharpened HSS drill

bits (HSS=high-speed steel). The appropriate quality is guar-

anteed by the Bosch accessories program.

Before screwing larger, longer screws into hard materials, it is

advisable to predrill a pilot hole with the core diameter of the

thread to approx.

of the screw length.

LED Capacity

Continuous lighting 3 x green ≥ 71%

Continuous lighting 2 x green 35—70%

Continuous lighting 1 x green 11—34%

Slow flashing 1 x green ≤ 10%

OBJ_BUCH-900-002.book Page 15 Friday, September 30, 2011 10:38 AM

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Bosch PSR14-4LI2 Manual

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