Bosch GBH 2-23 REA Professional Original Instructions Manual page 25

OBJ_BUCH-351-003.book Page 25 Wednesday, October 20, 2010 1:39 PM
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
Reversing the Rotational Direction
The rotational direction switch 6 is used to re-
verse the rotational direction of the machine.
Actuate the rotational direction switch 6
only when the machine is at a standstill.
Right rotation: Turn the selector switch for
drilling/hammer drilling 6 on both sides to
the stop in the position
Left rotation: Turn the selector switch for
drilling/hammer drilling 6 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 8.
– To lock the On/Off switch, keep it pressed
and additionally push the lock-on button 7.
– To switch off the machine, release the
On/Off switch 8. When the On/Off switch 8
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 8 is pressed.
Light pressure on the On/Off switch 8 results in
low speed/impact rate. Further pressure on the
switch increases the speed/impact rate.
Bosch Power Tools
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.
The dust extraction 14 may not be mounted for
.
chiselling.
Inserting Screwdriver Bits (see figure M)
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 32 with SDS-plus shank (accessory) is re-
quired.
The dust extraction 14 may not be mounted for
screwdriving.
– Clean the shank end of the adapter shank
and apply a light coat of grease.
– Insert the universal bit holder with a turning
motion into the tool holder until it automati-
cally locks.
– Check the locking effect by pulling the uni-
versal bit holder.
– Insert a screwdriver bit into the universal bit
holder. Use only screwdriver bits that match
the screw head.
– To remove the universal bit holder, pull the
locking sleeve 3 toward the rear and remove
the universal bit holder 32 out of the tool
holder.
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1 619 P07 078 | (20.10.10)