Start-Up

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 frequency.

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 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.

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 position and then switch the power tool on again.

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 addresses.

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 electronically.

To restart the tool, set the On/Off switch (3) to the "off" position and then switch the power tool on again.

The Constant Electronic keeps the speed at no load and under load virtually consistent, guaranteeing uniform performance.

You can select the required speed using the speed preselection thumbwheel (4), even during operation. The information in the table below describes the recommended values.

Material

Application

Application tool

Thumbwheel position

Metal

Removing paint

Abrasive disc

2–3

Metal

Brushing, removing rust

Cup brush, abrasive disc

3

Metal, stone

Grinding

Grinding disc

4–6

Metal

Rough grinding

Grinding disc

6

Metal

Cutting

Cutting disc

6

Stone

Cutting

Diamond cutting disc and cutting guide (cutting of stone is permitted only with a cutting guide)

6

  • The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and fly apart.

Level
Speed preselection

GWS 12-125 S
[min-1]

1

2800

2

3900

3

5200

4

6500

5

8100

6

11,000

The values specified for speed levels are guide values.