Bosch GWS 20-230 H Professional Original Instructions Manual page 15

The main handle (31) can be rotated 90° to the left or right
relative to the motor housing. This enables the on/off switch
to be brought into a more convenient position for particular
working situations, such as cutting operations using the ex-
traction guard for cutting with a guide block (21) or for left-
handed persons.
Pull back the handle release (32) in the direction of the ar-
row while simultaneously turning the main handle (31) until
it clicks into the required position.
Rotating the machine head
(GWS 20-230 H / GWS 22-180 H /
GWS 22-230 H/JH / GWS 24-180 H /
GWS 24-230 H/JH / GWS 26-180 H /
GWS 26-230 B/H)
Pull the plug out of the socket before carrying out any
u
work on the power tool.
The machine head can be ro-
tated in 90° increments. This
enables the on/off switch to
be brought into a more con-
venient position for particular
working situations, such as
cutting operations using the
extraction guard for cutting
with a guide block (21) or for
left-handed persons.
Completely unscrew the four screws. Rotate the machine
head carefully, without removing it from the housing, into
the new position. Screw in and retighten the four screws.
Dust/chip extraction
The dust from materials such as lead paint, some 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.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
Bosch Power Tools
– 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.
(31)
Avoid dust accumulation at the workplace. Dust can
u
(32)
easily ignite.
Operation
Start-up
Pay attention to the mains voltage. The voltage of the
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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.
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.
Switching on/off
To start the power tool, push the on/off switch (2) forward
and then press it down.
To lock the on/off switch (2) in position, push the on/off
switch (2) further forward.
To switch off the power tool, release the on/off switch (2);
or, if the switch is locked, briefly press the on/off switch (2)
and then release it.
Switch without locking mechanism (country-specific):
To start the power tool, push the on/off switch (2) forward
and then press it down.
To switch off the power tool, release the on/off switch (2).
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.
Run-out brake
(GWS 24-230 JVX)
The power tool is fitted with the Bosch Brake
System, a patented electromechanical run-out
brake. When the power supply is switched off
or interrupted, the abrasive tool is brought to a
complete stop within a few seconds. This
means that the run-out time is 70% shorter than for angle
grinders without a run-out brake and enables the power tool
to be set down sooner.
Note: If the braking effect deteriorates noticeably, the run-
out brake has failed. The power tool must be sent to the
after-sales service immediately; see the "After-Sales Service
and Application Service" section for addresses.
English | 15
1 609 92A 434 | (23.11.2018)