Starting Operation; Working Advice; Maintenance And Service; Maintenance And Cleaning - Bosch GBH 2-23 REA Professional Originalbetriebsanleitung

OBJ_BUCH-351-006.book Page 17 Tuesday, June 14, 2016 11:09 AM
Operation

Starting Operation

 Observe correct mains voltage! The voltage of the pow-
er 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 4, the op-
erating mode of the machine is selected.
Note: Change the operating mode only when the machine is
switched off! Otherwise, the machine can be damaged.
– To change the operating mode, press the release button 5
and turn the drilling/hammer drilling selector switch 4 to
the desired position 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 screw-
driving
Reversing the rotational direction
The rotational direction switch 6 is used to reverse the rota-
tional 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/ham-
mer drilling 6 on both sides to the stop in the position
.
Left rotation: Turn the selector switch for drilling/ham-
mer 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 save energy, only switch the power tool on when using it.
– 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 power 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/im-
pact rate. Further pressure on the switch increases the
speed/impact rate.
Bosch Power Tools
Overload Clutch
 If the tool insert becomes caught or jammed, the drive
to the drill spindle is interrupted. 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 loos-
en the tool insert. When switching the machine on with
the drilling tool jammed, high reaction torques can oc-
cur.

Working Advice

 Before any work on the machine itself, pull the mains
plug.
 Apply the power tool to the screw/nut only when it is
switched off. Rotating tool inserts can slip off.
 Hold the tool by the insulated gripping surfaces when
performing operations where the application tool or
the screw could contact hidden wiring or its own power
cord. Contact with a "live" wire will also make exposed
metal parts of the power tool "live" and shock the operator.
Chiselling
For chiselling, a MV 200 SDS-plus chiselling attachment (ac-
cessory), 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 required.
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 automatically locks.
– Check the locking effect by pulling the universal 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.

Maintenance and Service

Maintenance and Cleaning

 Before any work on the machine itself, pull the mains
plug.
 For safe and proper working, always keep the machine
and ventilation slots clean.
 A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by
an after-sales service.
If the replacement of the supply cord is necessary, this has to
be done by Bosch or an authorized Bosch service agent in or-
der to avoid a safety hazard.
– Clean the tool holder 1 each time after using.
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1 609 92A 24G | (14.6.16)