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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.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– 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.
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Avoid dust accumulation at the workplace.
Dust can
easily ignite.
Operation
Start-up
u
Pay attention to the mains voltage. The voltage of the
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.
u
Products that are only sold in AUS and NZ:
Use a resid-
ual current device (RCD) with a nominal residual current
of 30 mA or less.
When operating the power tool using a mobile generator that
does not have sufficient reserve capacity or an adequate
voltage control system with inrush current boost converter,
loss of performance or atypical behaviour may occur upon
switch-on.
Please check the suitability of the power generator you are
using, particularly with regard to the mains voltage and fre-
quency.
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Hold the tool by the insulated gripping surfaces and
auxiliary handle only.
The application tool could come
into contact with hidden wiring or its own cord.
Con-
tact with live wires may make metal parts of the tool live,
posing a risk of electric shock.
Switching on/off
To
start
the power tool, push the on/off switch
(2)
forward.
To
lock
the on/off switch
(2)
in position, push the on/off
switch
(2)
forward and down until it clicks into place.
To
switch off
the power tool, release the on/off switch
(2)
;
or, if the switch is locked, briefly push the on/off switch
(2)
backward and down and then release it.
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Always check abrasive tools before using them. The
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.
Restart protection
The restart protection feature prevents the power tool from
uncontrolled starting after the power supply to it has been
interrupted.
To
restart
the tool, set the on/off switch
(2)
to the off posi-
tion and then switch the power tool on again.
Speed preselection (GWS 9-115 S | GWS 9-125 S)
You can select the required speed using the speed preselec-
tion thumbwheel
(3)
, even during operation. The informa-
tion in the table below describes the recommended values.
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The rated speed of the accessory must be at least
equal to the maximum speed marked on the power
tool.
Accessories running faster than their rated speed
can break and fly apart.
Material
Application
Application tool
Thumbwheel position
Metal
Removing paint
Abrasive disc
2–3
Metal
Brushing, removing rust
Cup brush, abrasive disc
3
Metal, stone Grinding
Grinding disc
4–6
Metal
Rough grinding
Grinding disc
6
Metal
Cutting
Cutting disc
6
The values specified for speed levels are guide values.
Working Advice
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Pull the plug out of the socket before carrying out any
work on the power tool.
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Exercise caution when cutting slots in structural walls;
see the "Information on structural design" section.
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Clamp the workpiece if it is not secure under its own
weight.
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Do not load the power tool so heavily that it comes to a
stop.
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If the power tool has been subjected to a heavy load,
continue to run it at no-load for several minutes to
cool down the accessory.
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Do not use the power tool with a cut-off stand.
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Do not touch grinding and cutting discs until they have
cooled down.
The discs can become very hot while work-
ing.
Rough grinding
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Never use cutting discs for rough grinding.
Bosch Power Tools
1 609 92A 56A | (12.02.2021)