Bosch GSR 12 VE-2 Operating Instructions Manual page 19

OBJ_BUCH-199-002.book Page 19 Tuesday, November 21, 2006 2:47 PM
Changing the Tool (see figure B)
Before any work on the machine (e. g., main-
tenance, tool change, etc.) as well as during
transport and storage, set the rotational
direction switch to the centre position. Unin-
tentional actuation of the On/Off switch can lead to
injuries.
The drill spindle is locked when the On/Off switch 11
is not pressed. This makes quick, convenient and easy
changing of the tool in the drill chuck possible.
Open the keyless chuck 1 by turning until the tool can
be inserted. Insert the tool.
Firmly tighten the collar of the keyless chuck 1 by hand
in clockwise direction until the locking action ("click") is
no longer heard. This automatically locks the drill
chuck.
The locking is released again to remove the tool when
the collar is turned in the opposite direction.
Replacing the Drill Chuck
(see figures E–G)
Before any work on the machine (e. g., main-
tenance, tool change, etc.) as well as during
transport and storage, set the rotational
direction switch to the centre position. Unin-
tentional actuation of the On/Off switch can lead to
injuries.
Removing the Drill Chuck (see figures E–F)
The keyless chuck 1 is secured with a securing screw
14 against unintentional loosening from the drill spin-
dle. Completely open the keyless chuck 1 and unscrew
the securing screw 14 in clockwise direction. Please
note that the securing screw has a left-hand
thread.
Clamp the short end of an Allen key 15 into the keyless
chuck 1.
Place the machine on a stable surface (e.g. a work-
bench). Hold the machine firmly and loosen the keyless
chuck 1 by turning the Allen key 15 in anticlockwise
direction. Loosen a tight-seated keyless chuck by giv-
ing the long end of the Allen key 15 a light blow.
Remove the Allen key from the keyless chuck and com-
pletely unscrew the keyless chuck.
Mounting the Drill Chuck (see figure G)
The keyless chuck is mounted in reverse order.
Note: After mounting the keyless chuck, screw the
securing screw 14 in again.
The drill chuck must be tightened with a
tightening torque of approx. 10–25 Nm.
2 609 932 515 • 21.11.06
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 10 to the centre
position in order to avoid unintentional starting. Insert
the charged battery 8 into the handle so that it can be
felt to engage and faces flush against the handle.
Reversing the Rotational Direction (see figure C)
The rotational direction switch 10 is used to reverse the
rotational 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.
Left Rotation: For loosening or unscrewing screws,
push the rotational direction switch 10 right to the stop.
Setting the Torque
With the torque presetting ring 2 the required torque
setting can be preselected in 25 steps. With the cor-
rect setting, the insert tool is stopped as soon as the
screw is screwed flush into the material or when the
adjusted torque is reached. The safety clutch is deacti-
vated in the " " position, e. g. for drilling.
Select a higher setting or switch to the "
when unscrewing screws.
Setting range 1–20:
Lower torque for screwing in screws with small diame-
ter or into soft materials. Fine torque gradients between
the individual setting positions.
Setting range 21–25:
Higher torque for screwing in screws with large diame-
ters or into hard materials. Coarse torque gradients
between the individual setting positions.
Setting the Operating Mode (GSB 12 VE-2 /
GSB 14,4 VE-2 / GSB 18 VE-2) (see figure D)
With the operating mode preselection ring 5, you can
select between drilling/screwdriving and impact drill-
ing.
Drilling and screwdriving
Set the preselection ring 5 to the "Drilling with-
out impact" symbol.
Impact drilling
Set the preselection ring 5 to the "Impact drill-
ing" symbol.
In the "Impact drilling" position, the safety clutch is
deactivated and the maximum power is always effec-
tive.
" symbol
English | 19