Bosch Professional GBR 15 CAG Originalbetriebsanleitung Seite 21

(19) (17)
with pliers. Always use the two-pin spanner (18).
Dust/Chip Extraction
The dust from materials such as lead paint, certain types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– To achieve a high level of dust extraction, use the
GAS 55 M dust extractor for mineral dust together with
this power tool.
– 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
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easily ignite.
External dust extraction
The dust extractor must be approved for extracting stone
dust. Suitable dust extractors are available from Bosch.
Connect an extraction hose (10) (accessory) to the extrac-
tion outlet (8). Connect the dust extraction hose (10) to a
dust extractor (accessory). You will find an overview of how
to connect to a dust extractor at the end of these operating
instructions.
We recommend using anti-static hoses and dust extract-
ors.Whilst it is possible to use standard hoses and dust ex-
tractors, this is not recommended due to a potential static
charge accumulation.
Notes for the use of concrete grinders
Please observe the following notes in order to reduce the
dust emissions occurring while working.
– Only use combinations of diamond cup wheels, concrete
grinders with mounted protective guard and extraction
hood as well as dust category M dust extractors that are
recommended by Bosch. Other combinations may lead to
worse collection and separation of dust.
Bosch Power Tools
Press the spindle lock
button (9) to lock the grind-
ing spindle. To tighten the
quick-clamping nut, firmly
turn the diamond cup wheel
clockwise.
If the quick-clamping nut
has been attached correctly
and is not damaged, you
can loosen it by hand by
turning the knurled ring an-
ticlockwise. Never loosen a
tight quick-clamping nut
– Observe the operating instructions of the for mainten-
ance and cleaning of the dust extractor, including the fil-
ter. Empty dust collection containers immediately once
full. Clean the dust extractor filters regularly and always
insert the filters completely into the dust extractor.
– Only use the extraction hoses intended by Bosch. Do not
manipulate the extraction hose. If pieces of rock are
drawn into the extraction hose, stop working and clean
the extraction hose immediately. Prevent the extraction
hose from being bent or creased.
– Use the concrete grinder only as intended.
– Observe the general requirements for construction site
workplaces.
– Ensure good ventilation.
– Ensure that the working area is free of obstructions. For
longer jobs, the dust extractor must be guided along in
time, without obstructions in the path.
– Wear hearing protection, protective goggles, dust mask
and gloves as required. Use at least an FFP 2 protection
class particle-filtering half mask.
– Use a suitable vacuum cleaner for cleaning the workplace.
Prevent settled dust from being swirled up by sweeping.
Operation
Starting 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.
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.
Switching On and Off
To start the power tool, slide the on/off switch (1) forwards.
To lock the on/off switch (1) in position, press the on/off
switch (1) down at the front until it clicks into place.
To switch off the power tool, release the on/off switch (1)
or, if the switch is locked, briefly press the on/off switch (1)
down at the back and then release it.
Always check abrasive tools before using them. The
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abrasive tool must be fitted properly and be able to
move freely. Carry out a test run for at least one
minute with no load. Do not use abrasive tools that are
damaged, run untrue or vibrate during use. Damaged
abrasive tools can burst apart and cause injuries.
Working Advice
Clamp the workpiece if it is not secure under its own
u
weight.
Do not load the power tool so heavily that it comes to a
u
stop.
Do not touch the diamond cup wheel until it has cooled
u
down. Diamond cup wheels become very hot whilst work-
ing.
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1 609 92A 770 | (30.05.2023)