Switching On/Off; Practical Advice - Bosch PSR 18 LI-2 Ergonomic Originalbetriebsanleitung

Setting the rotational direction (see figure B)
The rotational direction switch (6) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (5) is being pressed.
Clockwise: To drill and to drive in screws, press the rota-
tional direction switch (6) all the way to the front.
Anti-clockwise: To loosen or unscrew screws, press the ro-
tational direction switch (6) all the way to the back.
Preselecting the Torque
The torque presetting ring (2) can be used to preselect the
required torque in 20 stages. When the correct setting is
used, the application tool will be stopped as soon as the
screw is driven flush into the material or as soon as the set
torque has been reached. In position
is deactivated, e.g. for drilling or driving in very large screws.
When unscrewing screws, it may be advisable to select a
higher setting or the symbol.
Setting the operating mode (PSB 18 LI-2 Ergonomic)
(see figure C)
The operating mode presetting ring (3) can be used to
choose between screwdriving, drilling and impact drilling.
In the "impact drilling" position the overload clutch is deac-
tivated and it is constantly at maximum power.
Mechanical gear selection
You can press the gear selector switch (4) with the
u
power tool off or on. You should not do this at full load
or maximum torque, however.
You can preselect two speed ranges with the gear selector
(4).
If the gear selector switch (4) cannot be pushed all the way,
turn the drill chuck slightly with the drill.
First gear:
Low speed range; for working with a large drilling diameter
or for screwdriving.
Second gear:
High speed range; for working with a small drilling diameter.

Switching on/off

To start the power tool, press and hold the on/off switch
(5).
To switch off the power tool, release the on/off switch (5).
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 (5) to varying ex-
tents.
Applying light pressure to the on/off switch (5) results in a
low rotational speed/impact rate. Applying increasing pres-
sure to the switch increases the speed/impact rate.
Emergency switch-off (KickBack Control)
The emergency switch-off function (KickBack Con-
u
trol) gives the user greater control over the power
tool and offers them better protection than power
tools that do not have KickBack Control. The power
Bosch Power Tools
tool will switch off if it suddenly and unforeseeably ro-
tates around the drilling axis.
Emergency switch-off is indicated by the LED on the power
tool flashing.
To switch the tool back on, release the on/off switch and
then press it again.
If the KickBack Control function is defective, it will no
u
longer be possible to switch the power tool on. Have
the power tool serviced by a qualified repair person
using only original replacement parts.
Fully automatic spindle lock (Auto-Lock)
The drill spindle, and therefore the tool holder, are locked
when the on/off switch (5) is not pressed.
the overload clutch
This allows screws to be driven in even when the battery is
discharged and enables the power tool to be used as a
screwdriver.
Run-out brake
Upon releasing the on/off switch (5), the drill chuck is
slowed down, which prevents the application tool from con-
tinuing to rotate.
When driving in screws, you should therefore only release
the on/off switch (5) once the screw has been inserted flush
into the workpiece. This way, the head of screw will not pen-
etrate the workpiece.
Temperature-dependent overload protection
In normal conditions of use, the power tool cannot be over-
loaded. If the power tool is overloaded or the permitted bat-
tery temperature is exceeded, the electronics of the power
tool will switch off until the temperature returns to within the
optimum operating temperature range.

Practical advice

Only apply the power tool to the screw when the tool
u
is switched off. Rotating application tools can slip off.
If the power tool becomes electrostatically charged, the
built-in electronics will switch the power tool off. Press the
on/off switch (5) again to restart the power tool.
Under certain conditions, strong electromagnetic fields can
negatively affect or stop the power tool. After switching the
power tool off, press the on/off switch (5) again to restart
the power tool.
Tips
The ergonomically shaped handle allows for dynamic and fa-
tigue-free handling of the power tool (see figure D).
After working at a low speed for an extended period, you
should operate the power tool at the maximum speed for ap-
proximately three minutes without load to cool it down.
When drilling into metal, only use sharpened HSS drills (HSS
= high-speed steel) which are in perfect condition. The
Bosch accessory range guarantees appropriate quality.
Before screwing larger, longer screws into hard materials, it
is advisable to pre-drill a pilot hole with the core diameter of
the thread to approx. 2/3 of the screw length.
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1 609 92A 4YA | (13.05.2019)