Bosch GWS 12-125 S Professional Notice Originale page 13

Avoid dust accumulation at the workplace. Dust can
u
easily ignite.
Operation
Start-Up
Pay attention to the mains voltage. The voltage of the
u
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.
Products that are only sold in AUS and NZ: Use a resid-
u
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.
Switching on/off
To start the power tool, push the on/off switch (3) forward.
To lock the on/off switch (3) in position, push the on/off
switch (3) forward and down until it clicks into place.
To switch off the power tool, release the on/off switch (3);
or, if the switch is locked, briefly push the on/off switch (3)
backward and down and then release it.
Always check abrasive tools before using them. The
u
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
Material Application
Metal Removing paint
Metal Brushing, removing rust
Metal, stone Grinding
Metal Rough grinding
Metal Cutting
Stone Cutting
The rated speed of the accessory must be at least
u
equal to the maximum speed marked on the power
tool. Accessories running faster than their rated speed
can break and fly apart.
Level GWS 12-125 S
-1
Speed [min ]
preselec-
tion
1 2800
Bosch Power Tools
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 (3) to the off posi-
tion and then switch the power tool on again.
Soft start
The electronic soft start limits the torque when the power
tool is switched on and enables a smooth start-up.
Note: If the power tool runs at full speed immediately after
being switched on, this means that the soft start and restart
protection mechanisms have failed. The power tool must be
sent to the after-sales service immediately; see the "After-
Sales Service and Application Service" section for ad-
dresses.
Kickback control
To restart the tool, set the On/Off switch (3) to the "off" po-
sition and then switch the power tool on again.
Constant Electronic control
The Constant Electronic keeps the speed at no load and un-
der load virtually consistent, guaranteeing uniform perform-
ance.
Speed preselection
You can select the required speed using the speed preselec-
tion thumbwheel (4), even during operation. The informa-
tion in the table below describes the recommended values.
Application tool
Abrasive disc
Cup brush, abrasive disc
Grinding disc
Grinding disc
Cutting disc
Diamond cutting disc and cutting
guide (cutting of stone is permit-
ted only with a cutting guide)
Level
Speed
preselec-
tion
2
GWS 12-150 S
-1
3
[min ]
4
5
2800
6
If there is a sudden kickback in the power tool,
e.g. jamming in a separating cut, the power
supply to the motor will be interrupted elec-
tronically.
Thumbwheel position
2–3
3
4–6
6
6
6
GWS 12-125 S GWS 12-150 S
-1 -1
[min ] [min ]
3900 3900
5200 5200
6500 6500
8100 8100
11,000 10,000
1 609 92A 72X | (23.06.2022)
English | 13