Switching On/Off; Practical Advice - Bosch GBH 2-23 REA Professional Notice Originale

18 | English
Adapting the Dust Extraction System to the Tool Length
(see figure J)
To make working with short application tools more conveni-
ent, the length of the dust extraction system (15) can be ad-
apted.
– Press and hold the button (14) and slide the telescopic
guide (16) into the dust extraction system (15) until the
dust collector is close to the tip of the application tool.
– To extend the telescopic guide back out, press the
button (14) again.
Dust Collector for Drill Bits (see figure K)
– To change the dust collector (18), push the release
button (30) and pull the dust collector out of the dust ex-
traction system.
– To insert the dust collector (18), push it from above into
the dust extraction system (15) until you hear it click into
place.
Dust Collector for Hollow Core Bits (see figure L)
To drill with hollow core bits, the dust collector for drills (18)
must be replaced with a special dust collector (31) (access-
ory). When using the dust collector for hollow core bits, the
adapter box (26) (accessory), not the dust box (10), must
be used with external dust extraction for the dust extraction
system.
– If required, remove the dust collector for drill bits (18).
– To insert the dust collector for hollow core bits (31), push
it from above into the dust extraction system until you
hear it click into place.
– To remove the dust collector (31), press the catch (32)
outwards and pull the dust collector off upwards.
Operation
Products that are only sold in AUS and NZ: Use a resid-
u
ual current device (RCD) with a nominal residual current
of 30 mA or less.
Start-up
Pay attention to the mains voltage. The voltage of the
u
power source must match the voltage specified on the
rating plate of the power tool. Power tools marked
with 230 V can also be operated with 220 V.
Setting the Operating Mode
Use the "drilling/hammer drilling" selector switch (5) to se-
lect the power tool's operating mode.
– To change the operating mode, press the release
button (6) and turn the "drilling/hammer drilling" selector
switch (5) until it clicks into the required position.
Note: Only change the operating mode when the power tool
is switched off. Otherwise, the power tool may become dam-
aged.
1 609 92A 77Y | (24.01.2022)
Position for hammer drilling into concrete
or stone and for chiselling (chisel only with
accessory MV 200)
Position for drilling without impact in wood,
metal, ceramic and plastic and for screw-
driving
Setting the Rotational Direction
The rotational direction switch (7) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (9) is being pressed.
Only operate the rotational direction switch (7) when
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the power tool is not in use.
Always set the rotational direction to clockwise rotation for
hammer drilling, drilling and chiselling.
– Rotate clockwise: Turn the rotational direction
switch (7) on both sides until it stops in the
– Rotate anticlockwise: Turn the rotational direction
switch (7) on both sides until it stops in the

Switching On/Off

– To switch on the power tool, press the on/off switch (9).
– To lock the on/off switch (9), press and hold it while also
pushing the lock-on button (8).
– To switch off the power tool, release the on/off switch
(9). If the on/off switch (9) is locked, press the switch
first and then release it.
Adjusting the Speed/Impact Rate
You can adjust the speed/impact rate of the power tool when
it is on by pressing in the on/off switch (9) to varying ex-
tents.
Applying light pressure to the on/off switch (9) results in a
low rotational speed/impact rate. Applying increasing pres-
sure to the switch increases the speed/impact rate.

Practical Advice

Only apply the power tool to the screw/nut when the
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tool is switched off. Rotating tool inserts can slip off.
Overload clutch
If the application tool jams or snags, the power trans-
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mission to the drill spindle will be interrupted. Always
hold the power tool firmly with both hands to with-
stand the forces this may create and adopt a position
with stable footing.
Switch the power tool off immediately and remove the
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application tool if the power tool becomes blocked.
Switching on when the drilling tool is blocked may
cause high torque reactions.
Chiselling
For chiselling, you will need an SDS plus chisel MV 200 at-
tachment (accessory), which inserts into the SDS plus tool
holder (2).
position.
position.
Bosch Power Tools