English |
13
Bosch Power Tools
1 609 92A 3ZY | (14.12.17)
Restarting Protection
The restarting protection feature prevents uncontrolled re-
starting of the machine after an interruption in the power sup-
ply.
To
restart the operation
, switch the On/Off switch
4
to the
Off position and start the machine again.
Reduced starting current
The electronic reduced starting current limits the power con-
sumption when switching the tool on and enables operation
from a 13 ampere fuse.
Note:
When the machine runs with full speed after switching
on, the reduced starting current, the restarting protection
and the kickback stop features have failed. The power tool
must promptly be sent to an after-sales service agent for
maintenance. For addresses, see Section „After-sales Service
and Application Service“.
Constant Electronic Control
Constant electronic control holds the speed constant at no-
load and under load, and ensures uniform working perfor-
mance.
Speed preselection (GWS 18-125 SL/GWS 18-125 SPL)
The required speed can be preselected with the thumbwheel
3
(also while running).
The data in the following table are recommended values.
The values specified for speed levels are guide values.
The rated speed of the accessory must be at least equal
to the maximum speed marked on the power tool.
Ac-
cessories running faster than their rated speed can break
and fly apart.
Working Advice
Exercise caution when cutting slots in structural walls;
see Section “Information on Structures”.
Clamp the workpiece if it does not remain stationary
due to its own weight.
Do not strain the machine so heavily that it comes to a
standstill.
After heavily straining the power tool, continue to run
it at no-load for several minutes to cool down the acces-
sory.
Do not touch grinding and cutting discs before they
have cooled down.
The discs can become very hot while
working.
Do not use the power tool with a cut-off stand.
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-
tection guard for cutting 14.
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 ap-
plying sideward pressure.
Material
Application
Accessory
Thumbwheel 3
Metal
Removing paint
Sanding disc
2 – 3
Wood, metal
Brushing, rust removal
Cup brush, sanding disc
3
Metal, masonry
Grinding
Grinding disc
4 – 6
Metal
Rough grinding
Grinding disc
6
Masonry, stone
Cutting
Cutting disc and cutting guide
(Cutting masonry/stone is permitted only with use of
the cutting guide)
6
Metal
Cutting
Cutting disc
6
Speed prese-
lection level
GWS 18-125 ...
[min
-1
]
GWS 18-150 ...
[min
-1
]
1
2800
2800
2
4500
4100
3
6300
5400
4
8200
6700
5
9800
8000
6
12000
10000
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