Bosch GWS Professional 18-125 V-LI Original Instructions Manual page 11

OBJ_BUCH-1112-005.book Page 12 Tuesday, December 1, 2015 3:21 PM
12 | English
max.
[mm] [mm]
D b
d
75 30 M 14
b
D
Rotating the Machine Head
 Before any work on the machine itself (e.g. mainte-
nance, tool change, etc.) as well as during transport
and storage, remove the battery from the power tool.
There is danger of injury when unintentionally actuating
the On/Off switch.
machine head carefully, without removing it from the hous-
ing, 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.
– 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.
Operation
Starting Operation
Inserting the battery
 Use only original Bosch lithium-ion batteries with the
voltage listed on the nameplate of your power tool. Using
other batteries can lead to injuries and pose a fire hazard.
Insert the charged battery 5 from the front into the base of the
power tool until the battery is securely locked.
1 609 92A 1UU | (1.12.15)
Switching On and Off
To start the power tool, push the On/Off switch 3 forwards.
To lock the On/Off switch 3, press the On/Off switch 3 down
-1
d [min ] [m/s]
at the front until it latches.
To switch off the power tool, release the On/Off switch 3 or,
if it is locked, briefly push down the back of the On/Off switch
10000 45
3 and then release it.
 Check grinding tools before using. The grinding tool
Working Advice
 Exercise caution when cutting slots in structural walls;
The machine head can be
rotated with respect to
the machine housing in  Clamp the workpiece if it does not remain stationary
90° steps. In this man-
ner, the On/Off switch
 Do not strain the machine so heavily that it comes to a
can be brought into a
more convenient position
 After heavily straining the power tool, continue to run
for special working situa-
tions, e.g. for left-handed
persons.
 Do not touch grinding and cutting discs before they
Completely unscrew the
four screws. Rotate the
 Do not use the power tool with a cut-off stand.
When the power tool is electrostatically charged, the built-in
electronic control switches it off. To restart the power tool,
press the On/Off switch 3 again.
Rough Grinding
 Never use a cutting disc for roughing.
The best roughing results are achieved when setting the ma-
chine at an angle of 30° to 40°. Move the machine back and
forth with moderate pressure. In this manner, the workpiece
will not become too hot, does not discolour and no grooves
are formed.
Flap Disc
With the flap disc (accessory), curved surfaces and profiles
can be worked.
Flap discs have a considerably higher service life, lower noise
levels and lower sanding temperatures than conventional
sanding sheets.
Cutting Metal
 For cutting with bonded abrasives, always use the pro-
When cutting, work with moderate feed, adapted to the mate-
rial being cut. Do not exert pressure onto the cutting disc, tilt
or oscillate the machine.
Do not reduce the speed of running down cutting discs by
applying sideward pressure.
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 grind-
ing tools. Damaged grinding tools can burst and cause
injuries.
see Section "Information on Structures".
due to its own weight.
standstill.
it at no-load for several minutes to cool down the acces-
sory.
have cooled down. The discs can become very hot while
working.
tection guard for cutting 16.
Bosch Power Tools