Switching On/Off; Practical Advice - Bosch PBH 3000-2 FRE Manual Original

Only operate the rotational direction switch (10)
u
when the power tool is not in use.
Always set the rotational direction to clockwise rotation for
hammer drilling, drilling and chiselling.
– Clockwise rotation: To drill and to drive in screws, press
the rotational direction switch (10) all the way to the
right.
– Anticlockwise rotation: To loosen or unscrew screws
and nuts, press the rotational direction switch (10) all the
way to the left.

Switching On/Off

– To switch on the power tool, press the on/off switch (8).
– To lock the on/off switch (8), press and hold it while also
pushing the lock-on button (7).
– To switch off the power tool, release the on/off switch
(8). If the on/off switch (8) 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 (8) to varying ex-
tents.
Applying light pressure to the on/off switch (8) results in a
low rotational speed/impact rate. Applying increasing pres-
sure to the switch increases the speed/impact rate.
Preselecting the speed/impact rate
You can preselect the required speed using the speed
preselection thumbwheel (9), even during operation.
Due to the limitation, the on/off switch (8) can only be
pushed in as far as the preselected limit.
Changing the chiselling position (Vario-Lock)
You can lock the chisel in 36 different positions, so you can
select the optimum working position for each task.
– Insert the chisel into the tool holder.
– Turn the impact/mode selector switch (12) to the "Vario-
Lock" position.
– Turn the application tool to the required chisel position.
– Turn the impact/mode selector switch (12) to the "chis-
elling" position. With this, the tool holder is locked.
– Set the rotational direction for chiselling to clockwise.
Mechanical gear selection
You can preselect two speed ranges with the gear selector
switch (13).
First gear: Low speed range, for hammer drilling, chiselling,
drilling with a large drilling diameter, screwdriving and
thread cutting.
Second gear: High speed range, for drilling with a small
drilling diameter.
– To change the gear, press the release button (11) on the
impact/mode selector switch (12) and turn the impact/
mode selector switch to the "drilling" position. Then press
the release button (14) on the gear selector switch (13)
and turn the gear selector switch to second gear.
Bosch Power Tools
Note: The impact/mode selector switch (12) must only be
turned when the power tool is switched off. The power tool
must also be switched off when the gear selector switch
(13) is being turned.
Hammer drilling and chiselling are only possible in first gear.
The special shape of the gear selector switch (13) and im-
pact/mode selector switch (12) prevents switching to
second gear in these operating modes.
Before changing the operating mode from drilling to hammer
drilling, Vario-Lock or chiselling, the gear selector switch
(13) must be switched back to first gear.

Practical Advice

Setting the drilling depth (see figure J)
You can use the depth stop (18) to set the required drilling
depth X.
– Press the button for depth stop adjustment (15) and in-
sert the depth stop into the auxiliary handle (17).
The fluting on the depth stop (18) must face downwards.
– Insert the SDS-plus application tool into the SDS-plus tool
holder (3) to the stop. Otherwise, the movability of the
SDS-plus drilling tool can lead to incorrect adjustment of
the drilling depth.
– Pull the depth stop far enough out that the distance
between the drill bit tip and the edge of the depth stop
corresponds to the required drilling depth X.
Overload clutch
If the application tool jams or snags, the power trans-
u
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
u
application tool if the power tool becomes blocked.
Switching on when the drilling tool is blocked may
cause high torque reactions.
Inserting screwdriver bits (see figure K)
Only apply the power tool to the screw/nut when the
u
tool is switched off. Rotating tool inserts can slip off.
A universal holder (25) with SDS-plus shank (accessory) is
required to work with screwdriver bits.
– Clean and lightly grease the insertion end of the shank.
– Insert the universal holder into the tool holder while turn-
ing it until it locks automatically.
– Check that it is locked by pulling the universal holder.
– Insert a screwdriver bit in the universal holder. Only use
screwdriver bits that fit the screw head.
– To remove the universal holder, slide the locking sleeve
(5) backwards and remove the universal holder (25)
from the tool holder.
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1 609 92A 6JK | (25.03.2022)