Maintenance And Service - Bosch GSB 19-2 REA Professional Originalbetriebsanleitung

Products that are only sold in AUS and NZ: Use a resid-
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ual current device (RCD) with a nominal residual current
of 30 mA or less.
Setting the rotational direction (see figure L - M)
Only operate the rotational direction switch (4) when
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the power tool is not in use.
The rotational direction switch (4) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (7) is being pressed.
Clockwise rotation: To drill and drive in screws, slide the
rotational direction switch (4) downwards on the left-hand
side and upwards on the right-hand side at the same time.
Anti-clockwise rotation: To loosen and unscrew screws and
nuts, slide the rotational direction switch (4) upwards on the
left-hand side and downwards on the right-hand side at the
same time.
Setting the Operating Mode
Drilling and screwdriving
Set the selector switch (3) to the "drilling"
symbol.
Impact drilling
Set the selector switch (3) to the "impact
drilling" symbol.
The selector switch (3) clicks into place and
can also be actuated when the motor is running.
Mechanical Gear Selection
You can press the gear selector switch (2) with the
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power tool running at a low speed. You should not do
this at full load or maximum torque, or when the tool is
not in use, however.
You can preselect two speed ranges with the gear selector
(2).
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.
If the gear selector (2) cannot be swivelled all the way to the
stop, turn the drive spindle slightly with the drill.
Switching on/off
To start the power tool, press and hold the on/off switch
(7).
Press the lock-on button (5) to lock the on/off switch (7) in
this position.
To switch off the power tool, release the on/off switch (7);
or, if the switch is locked with the lock-on button (5), briefly
press the on/off switch (7) and then release it.
Overload clutch
The power tool is equipped with an overload
clutch (anti-rotation) to limit high torque reac-
tions.
Bosch Power Tools
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.
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 (7) to varying ex-
tents.
Applying light pressure to the on/off switch (7) 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/impact rate using the
speed preselection thumbwheel (6), even during operation.
The required speed/impact rate is dependent on the mater-
ial and the work conditions and can be determined by prac-
tical trials.
Practical Advice
Pull the plug out of the socket before carrying out any
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work on the power tool.
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.
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.
To drill into tiles, set the selector switch (3) to the "drilling"
symbol. After drilling through the tile, set the selector switch
to the "impact drilling" symbol and drill with impact.
Use carbide drill bits when working with concrete, stone and
masonry.
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.
Using the drill bit sharpener (accessory), you can effortlessly
sharpen twist drill bits with a diameter of 2.5–10 mm.

Maintenance and Service

Maintenance and Cleaning
Pull the plug out of the socket before carrying out any
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work on the power tool.
To ensure safe and efficient operation, always keep
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the power tool and the ventilation slots clean.
In order to avoid safety hazards, if the power supply cord
needs to be replaced, this must be done by Bosch or by an
after-sales service centre that is authorised to repair Bosch
power tools.
English | 11
1 609 92A 55R | (17.07.2019)