Bosch GBH 2600 Professional Original Instructions Manual page 23

OBJ_BUCH-1032-001.book Page 23 Monday, June 8, 2009 3:44 PM
Operation
Starting Operation
Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Setting the Operating Mode
The operating mode of the power tool is select-
ed with the mode selector switch 11.
– To change the operating mode, push the re-
lease button 10 and turn the mode selector
switch 11 to the requested position until it
can be heard to latch.
Note: Change the operating mode only when the
machine is switched off! Otherwise, the ma-
chine can be damaged.
Position for hammer drilling in
concrete or stone
Position for drilling without im-
pact in wood, metal, ceramic and
plastic as well as for screwdriving
Vario-Lock position for adjust-
ment of the chiselling position
The mode selector switch 11 does
not latch in this position.
Position for chiselling
Bosch Power Tools
Reversing the Rotational Direction
The rotational direction switch 7 is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch 9 actuated.
Right rotation: Turn the selector switch for
drilling/hammer drilling 7 on both sides to
the stop in the position
Left rotation: Turn the selector switch for
drilling/hammer drilling 7 on both sides to
the stop in the position
Set the direction of rotation for hammer drilling,
drilling and chiselling always to right rotation.
Switching On and Off
– To start the machine, press the On/Off
switch 9.
– To lock the On/Off switch, keep it pressed
and additionally push the lock-on button 8.
– To switch off the machine, release the
On/Off switch 9. When the On/Off switch 9
is locked, press it first and then release it.
Setting the Speed/Impact Rate
The speed/impact rate of the switched on pow-
er tool can be variably adjusted, depending on
how far the On/Off switch 9 is pressed.
Light pressure on the On/Off switch 9 results in
low speed/impact rate. Further pressure on the
switch increases the speed/impact rate.
Safety Clutch
If the tool insert becomes caught or
jammed, the drive to the drill spindle is in-
terrupted. Because of the forces that occur,
always hold the power tool firmly with both
hands and provide for a secure stance.
If the power tool jams, switch the machine
off and loosen the tool insert. When switch-
ing the machine on with the drilling tool
jammed, high reaction torques can occur.
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