Bosch GBH 2-23 S Professional Original Instructions Manual page 11

OBJ_BUCH-1281-002.book Page 11 Tuesday, October 12, 2010 3:05 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
With the selector switch for drilling/hammer
drilling 8, the operating mode of the machine is
selected.
Note: Change the operating mode only when the
machine is switched off! Otherwise, the ma-
chine can be damaged.
– To change the operating mode, press the re-
lease button 7 and turn the drilling/hammer
drilling selector switch 8 to the desired posi-
tion until it can be heard to latch.
Position for hammer drilling in
concrete or stone as well as for
chiselling (chiselling only with the
MV 200 accessory)
Position for drilling without impact
in wood, metal, ceramic and plastic
as well as for screwdriving and
thread cutting
Reversing the Rotational Direction
(GBH 2-23 RE)
The rotational direction switch 4 is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch 6 actuated.
Right rotation: Turn the selector switch for
drilling/hammer drilling 4 on both sides to
the stop in the position
Left rotation: Turn the selector switch for
drilling/hammer drilling 4 on both sides to
the stop in the position
Set the direction of rotation for hammer drilling,
drilling and chiselling always to right rotation.
Bosch Power Tools
Switching On and Off
– To start the machine, press the On/Off
switch 6.
– To lock the On/Off switch, keep it pressed
and additionally push the lock-on button 5.
– To switch off the machine, release the
On/Off switch 6. When the On/Off switch 6
is locked, press it first and then release it.
Setting the Speed/Impact Rate
(GBH 2-23 E/RE)
The speed/impact rate of the switched on pow-
er tool can be variably adjusted, depending on
how far the On/Off switch 6 is pressed.
Light pressure on the On/Off switch 6 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.
Working Advice
Before any work on the machine itself, pull
the mains plug.
Chiselling
For chiselling, a MV 200 SDS-plus chiselling at-
tachment (accessory), which is inserted into the
SDS-plus tool holder 1, is required.
Inserting Screwdriver Bits (see figure H)
Apply the power tool to the screw/nut only
.
when it is switched off. Rotating tool inserts
can slip off.
To work with screwdriver bits, a universal bit
.
holder 22 with SDS-plus shank (accessory) is re-
quired.
– Clean the shank end of the adapter shank
and apply a light coat of grease.
English | 11
1 619 P09 069 | (12.10.10)