# Starting operation

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To start the power tool, push the unlocking lever (6) forwards and then push the on/off switch (7) up.

To switch off the power tool, release the on/off switch (7).

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You can preselect the required speed using the two buttons for speed preselection (3), even during operation. The required speed depends on the material and the working conditions; it can be ascertained through practical tests.

LEDs | [min-1]
--- | ---
1 x continuous white light | 5000
2 x continuous white light | 7500
3 x continuous white light | 10,000
4 x continuous white light | 12500
5 x continuous white light | 15000

- 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.

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The following table explains the possible LED displays (2).

Paint | State | Meaning/cause | Solution
--- | --- | --- | ---
White | Continuous light (1 x to 5 x) | Speed preselection | see Speed preselection (see figure B)
Green | Continuous light (2 x to 5 x) | Battery charged | see Battery charge indicator
Yellow | Continuous light (1 x) | Battery almost empty see Battery charge indicator | Replace or charge battery soon
Flashing light (5 x) | Critical temperature has been reached (motor, electronics, battery) | Run the power tool at no load and allow it to cool down
Red | Continuous light (1 x) | Battery empty see Battery charge indicator | Replace or charge battery
Flashing light (5 x) | Power tool is overheated and will switch off | Leave the power tool to cool down and switch it on again
Power tool is jammed and will switch off | Rectify the blockage and switch the power tool on again
The spindle lock is activated and the power tool will switch off | Deactivate the spindle lock and switch the power tool on again

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