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Starting Operation; Dust/Chip Extraction; Working Advice - Bosch GWS Professional 20-180 H Originalbetriebsanleitung

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OBJ_BUCH-1797-003.book Page 21 Thursday, September 19, 2013 2:38 PM
max.
[mm]
[mm]
D
b
d
180
8
D
230
8
b
D
180
230
d
100
30
M 14
b
D
Rotating the Machine Head
 Before any work on the machine itself, pull the mains
plug.
guide with dust extraction protection guard 24 or for left-
handed persons.
Completely unscrew the four screws. Rotate the machine
head carefully, without removing it from the housing, to the
new position. Screw in and tighten the four screws again.

Dust/Chip Extraction

 Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suita-
ble for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Bosch Power Tools
Operation

Starting Operation

-1
d
[min
]
[m/s]
 Observe correct mains voltage! The voltage of the pow-
22.2
8500
80
22.2
6500
80
When operating the machine with power from mobile genera-
tors that do not have sufficient reserve capacity or are not
8500
80
equipped with suitable voltage control with starting current
6500
80
amplification, loss of performance or untypical behavior can
occur upon switching on.
Please observe the suitability of the power generator being
used, particularly with regard to the mains voltage and fre-
8500
45
quency.
Switching On and Off
To start the power tool, press the On/Off switch 2 forward
and then down.
To lock-on the pressed On/Off switch 2, push the On/Off
switch 2 further forward.
The machine head can be
rotated with respect to
To switch off the power tool, release the On/Off switch 2, or
the machine housing in
when it is locked, briefly press the On/Off switch 2 and then
90° steps. In this man-
release it.
ner, the On/Off switch
To save energy, only switch the power tool on when using it.
can be brought into a
Switch Version without Lock-on (country-specific):
more convenient position
To start the power tool, press the On/Off switch 2 forward
for special working situa-
and then down.
tions, e. g., for cutting op-
erations using the cutting
To switch off the machine, release the On/Off switch 2.
 Check grinding tools before using. The grinding tool

Working Advice

 Exercise caution when cutting slots in structural walls;
 Clamp the workpiece if it does not remain stationary
 Do not strain the machine so heavily that it comes to a
 After heavily straining the power tool, continue to run it at
 Do not touch grinding and cutting discs before they
 Do not use the power tool with a cut-off stand.
 Hold the power tool only by the insulated gripping sur-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
must be mounted properly and be able to move freely.
Carry out a test run for at least one minute with no load.
Do not use damaged, out-of-centre or vibrating grinding
tools. Damaged grinding tools can burst and cause injuries.
see Section "Information on Structures".
due to its own weight.
standstill.
no-load for several minutes to cool down the accessory.
have cooled down. The discs can become very hot while
working.
faces 26 and the auxiliary handle 3 when performing
operations where the application tool could contact
hidden wiring or its own power cord. Contact with a
"live" wire will also make exposed metal parts of the power
tool "live" and shock the operator.
English | 21
1 619 P11 591 | (19.9.13)

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