Bosch Professional GWS 12-125 CI Manual Original página 29

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.
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.
Starting current limitation
The electronic starting current limitation feature restricts the
power of the power tool when it is switched on and enables
operation using a 16 A fuse.
Note: If the power tool runs at full speed immediately after
being switched on, this means that the starting current limit-
ation and restarting protection mechanisms have failed. The
power tool must be sent to the after-sales service immedi-
ately; see the "After-Sales Service and Application Service"
section for addresses.
Speed preselection
(GWS 13-125 CIE / GWS 15-125 CIE / GWS 15-125 Inox /
GWS 17-125 CIE / GWS 17-125 CIT / GWS 17-125 Inox /
GWS 19-125 CIE)
You can preselect the required speed using the speed
preselection thumbwheel (4), even during operation. The in-
Material Application
Metal Removing paint
Wood, metal Brushing, removing rust
Metal, stone Grinding
Metal Rough grinding
Metal Cutting
Stone Cutting
The values specified for speed levels are guide values.
The rated speed of the accessory must be at least
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equal to the maximum speed marked on the power
tool. Accessories running faster than their rated speed
can break and fly apart.
Working advice
Pull the plug out of the socket before carrying out any
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work on the power tool.
Exercise caution when cutting slots in structural walls;
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see the "Information on structural design" section.
Clamp the workpiece if it is not secure under its own
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weight.
Bosch Power Tools
Kickback stop
(GWS 12-125 CI / GWS 13-125 CI / GWS 13-125 CIE /
GWS 15-125 CIE / GWS 15-125 Inox / GWS 17-125 CI /
GWS17-125 CIE / GWS 17-125 CIT / GWS 17-150 CI /
GWS 17-125 Inox / GWS 19-125 CI / GWS 19-125 CIE /
GWS 19-150 CI / GWS 19-125 CIST)
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.
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
(GWS 12-125 CI / GWS 13-125 CI / GWS 13-125 CIE /
GWS 15-125 CIE / GWS 15-125 Inox / GWS 17-125 CI /
GWS17-125 CIE / GWS 17-125 CIT / GWS 17-150 CI /
GWS 17-125 Inox / GWS 19-125 CI / GWS 19-125 CIE /
GWS 19-150 CI / GWS 19-125 CIST)
The Constant Electronic keeps the speed at no load and un-
der load virtually consistent, guaranteeing uniform perform-
ance.
formation 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)
Do not load the power tool so heavily that it comes to a
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stop.
If the power tool has been subjected to a heavy load,
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continue to run it at no-load for several minutes to
cool down the accessory.
Do not use the power tool with a cut-off stand.
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Do not touch grinding and cutting discs until they have
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cooled down. The discs can become very hot while work-
ing.
Flap Disc
With the flap disc (accessory), curved surfaces and profiles
can be worked. Flap discs have a considerably higher ser-
English | 29
Thumbwheel position
2 − 3
3
4 − 6
6
6
6
1 609 92A 5WS | (06.08.2020)