Working Advice; Maintenance And Service; Maintenance And Cleaning - Bosch PSR 12 Originalbetriebsanleitung

OBJ_BUCH-149-003.book Page 17 Monday, November 5, 2007 10:04 AM
Switching On and Off
To start the machine, press the On/Off switch 13
and keep it depressed.
The power light 11 lights up when the On/Off
switch 13 is halfway or fully depressed, and ena-
bles illumination of the screwing location in unfa-
vourable light conditions.
To switch off the machine, release the On/Off
switch 13.
Adjusting the Speed
The speed of the switched on power tool can be
variably adjusted, depending on how far the
On/Off switch 13 is pressed.
Light pressure on the On/Off switch 13 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 13 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 13. By doing so, the head
of the screw does not penetrate into the materi-
al.

Working Advice

Apply the power tool to the screw only when
it is switched off. Rotating tool inserts can
slip off.
Soft Grip
The gripping surface (soft grip) 7 reduces the
danger of slipping and thereby improves the grip
on the machine and the handling.
At the same time, the rubber coating achieves a
vibration-reducing effect.
Bosch Power Tools
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.
2
/ of the screw length.
3

Maintenance and Service

Maintenance and Cleaning

Before any work on the machine (e. g., main-
tenance, tool change, etc.) as well as during
transport and storage, set the rotational di-
rection switch to the centre position. Unin-
tentional actuation of the On/Off switch can
lead to injuries.
For safe and proper working, always keep
the machine and ventilation slots clean.
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts order,
please always include the 10-digit article number
given on the type plate of the machine.
English | 17
1 609 929 M89 | (5.11.07)