Bosch PSR 12-2 Originele handleiding - Pagina 10

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OBJ_BUCH-596-001.book Page 10 Wednesday, November 14, 2007 8:11 AM

10 | English

Reversing the Rotational Direction

(see figure E)

The rotational direction switch 9 is used to re-

verse the rotational direction of the machine.

However, this is not possible with the On/Off

switch 10 actuated.

Right Rotation: For drilling and driving in screws,

push the rotational direction switch 9 left to the

stop.

Left Rotation: For loosening or unscrewing

screws, push the rotational direction switch 9

right to the stop.

Setting the Torque

The required torque can be preselected in 25

steps with the torque preselection ring 4. With

the correct setting, the insert tool is stopped as

soon as the screw is screwed flush into the ma-

terial or when the set torque is reached.

Select a higher setting when driving out screws,

or set to the symbol "Drilling".

Gear Selection, Mechanical

Actuate the gear selector 5 only when the

machine is at a standstill.

Two speed ranges can be preselected with the

gear selector 5.

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 5 cannot be pushed through

to the stop, lightly turn the drill chuck with drill.

Switching On and Off

To start the machine, press the On/Off switch 10

and keep it depressed.

To switch off the machine, release the On/Off

switch 10.

1 609 929 M88 | (14.11.07)

Adjusting the Speed

The speed of the switched on power tool can be

variably adjusted, depending on how far the

On/Off switch 10 is pressed.

Light pressure on the On/Off switch 10 results in

a low rotational speed. Further pressure on the

switch results in an increase in speed.

Run-on Brake

When the On/Off switch 10 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 re-

lease the On/Off switch 10. By doing so, the head

of the screw does not penetrate into the material.

Working Advice

Apply the power tool to the screw only when

it is switched off. Rotating tool inserts can

slip off.

Tips

After longer periods of working at low speed, al-

low the machine to cool down by running it for

approx. 3 minutes at maximum speed with no

load.

For drilling in metal, use only perfectly sharp-

ened HSS drill bits (HSS=high-speed steel). The

appropriate quality is guaranteed 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.

Bosch Power Tools