Bosch PSR 12 Manual Original página 16

OBJ_BUCH-149-003.book Page 16 Monday, November 5, 2007 10:04 AM
16 | English
Changing the Tool (see figure A)
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.
Hold the rear sleeve 3 of the keyless chuck 1 tight
and turn the front sleeve 2 in rotation direction
, until the tool can be inserted. Insert the tool.
Hold the rear sleeve 3 of the keyless chuck 1 tight
and firmly tighten the front sleeve 2 by hand in
rotation direction , until the locking action
(click) is heard. The drill chuck is locked auto-
matically.
The locking is released again to remove the tool
when the front sleeve 2 is turned in the opposite
direction.
Replacing the Drill Chuck
For machines without spindle lock, the drill
chuck must be replaced through an authorized
after-sales service agent for Bosch power tools.
The drill chuck must be tightened with a
tightening torque of approx. 30–35 Nm.
Dust/Chip Extraction
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 con-
nection with wood-treatment additives (chro-
mate, wood preservative). Materials contain-
ing asbestos may only be worked by
specialists.
– Use dust extraction whenever possible.
– Provide for good ventilation of the working
place.
– It is recommended to wear a P2 filter-class
respirator.
Observe the relevant regulations in your coun-
try for the materials to be worked.
1 609 929 M89 | (5.11.07)
Operation
Starting Operation
Inserting the Battery
Use only original Bosch O-pack batteries
with the voltage given on the type plate of
your machine. The use of other batteries can
lead to injuries and danger of fire.
Set the rotational direction switch 12 to the cen-
tre position in order to avoid unintentional start-
ing. Insert the charged battery 10 into the handle
so that it can be felt to engage and faces flush
against the handle.
Reversing the Rotational Direction
(see figure B)
The rotational direction switch 12 is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch 13 actuated.
Right Rotation: For drilling and driving in screws,
push the rotational direction switch 12 left to the
stop.
The indicator for right rotation 5 lights up
when the On/Off switch 13 is actuated.
Left Rotation: For loosening or unscrewing
screws, push the rotational direction switch 12
right to the stop.
The indicator for left rotation 6 lights up
when the On/Off switch 13 is actuated.
Setting the Torque
The required torque can be preselected in 10
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".
Drilling
The safety clutch is deactivated in the "Drilling"
position.
Bosch Power Tools