Dust/Chip Extraction; Starting Operation - Bosch GEX 12V-125 Professional Originalbetriebsanleitung

LED
Continuous lighting 3 x green
Continuous lighting 2 x green
Continuous lighting 1 x green
Slowly flashing light 1 x green
The three LEDs in the battery charge indicator flash
quickly when the temperature of the battery is outside
the operating temperature range of -30 to +70 °C and/or
the overload protection has been triggered.
Changing the Sanding Sheet (see figure B)
To remove the sanding sheet (9), lift it from the side and pull
it from the sanding pad (7).
Remove dirt and dust from the sanding pad (7), e.g. with a
paintbrush, before attaching a new sanding sheet.
The surface of the sanding pad (7) is fitted with a hook-and-
loop fastening, allowing sanding sheets with a hook-and-loop
backing to be secured quickly and easily.
Press the sanding sheet (9) firmly onto the underside of the
sanding pad (7).
To ensure optimum dust extraction, make sure that the
punched holes in the sanding sheet (9) are aligned with the
drilled holes in the sanding pad (7).
To increase the sanding pad's service life, in particular when
using net abrasives (e.g. Bosch M480), apply the Pad Saver
(accessory) between the sanding pad and abrasive.
Selection of the Sanding Plate
The power tool can be fitted with sanding discs of various
hardnesses, depending on the application:
– Soft sanding disc: Suitable for sensitive sanding even on
curved surfaces
– Medium-hard sanding disc: Suitable for all sanding work,
universal application
– Hard sanding disc: Suitable for heavy sanding on flat sur-
faces
Changing the sanding pad (see figure C)
Note: Replace damaged sanding pads (7) immediately.
Pull off the sanding sheet. Unscrew the 4 screws (10) com-
pletely (using a T20 screwdriver) and remove the sanding
pad (7). Attach the new sanding pad (7) and retighten the
screws.
Note: When attaching the sanding pad, make sure that the
teeth of the catch mate with the recesses in the sanding pad.
Note: Damaged sanding disc holders (11) must only be re-
placed by an after-sales service centre authorised to work
with Bosch power tools.

Dust/Chip Extraction

The dust from materials such as lead paint, certain types of
wood and minerals can be harmful to human health. Touch-
ing or breathing in this dust can trigger allergic reactions
and/or cause respiratory illnesses in the user or in people in
the near vicinity.
Bosch Power Tools
Certain dusts, such as oak or beech dust, are classified as
Capacity
carcinogenic, especially in conjunction with wood treatment
60–100%
additives (chromate, wood preservative). Materials contain-
30–60%
ing asbestos may only be machined by specialists.
10–30%
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
0–10%
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
u
easily ignite.
Self-generated dust extraction with dust bag (see figures
D–F)
Place and move the complete dust bag (2) onto the extrac-
tion outlet (12) until it lines up precisely with the power tool.
To empty the dust bag(13), pull the complete dust bag (2)
away from the extraction outlet (12). Unscrew the adapter
(14) from the dust bag (13)
Note: Empty the dust bag (13) in good time to ensure op-
timum dust extraction.
When working vertical surfaces, hold the power tool in such
a manner that the dust bag (2) faces downward.
External dust extraction (see figure G)
Fit a dust extraction hose (15) onto the extraction outlet
(12).
Connect the dust extraction hose (15) to an extractor. You
will find an overview of connecting to various dust extractors
at the end of these operating instructions.
The dust extractor must be suitable for the material being
worked.
When extracting dry dust that is especially detrimental to
health or carcinogenic, use a special dust extractor.
When working on vertical surfaces, hold the power tool with
the dust extraction hose facing downwards.
Operation

Starting Operation

Switching On/Off
Make sure that you are able to press the On/Off switch
u
without releasing the handle.
To switch on the power tool, press the on/off switch (1).
To switch off the power tool, press the on/off switch (1)
again.
Preselecting the orbital stroke rate
You can even preselect the orbital stroke rate during opera-
tion using the necessary orbital stroke rate preselection
thumbwheel (6).
1–2 Low orbital stroke rate
3–4 Medium orbital stroke rate
5–6 High orbital stroke rate
English | 15
and empty the dust bag.
1 609 92A 5NU | (10.11.2020)