Starting operation
- Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the rating plate of the power tool.
- Seek advice from the responsible structural engineer, architect or construction supervisor regarding planned drill holes before starting work. Do not penetrate any reinforcements unless you have authorisation from a structural engineer.
- When drilling holes that penetrate walls or ceilings, always check the area concerned for obstacles. Close off the work site and prevent the drill core from falling by means of formwork.
Before starting work, always check that the portable residual current device (PRCD) (16) is functioning correctly:
- Press the TEST button on the residual current device (PRCD). The red indicator light will switch off.
- Press the RESET button. It must now be possible to switch the power tool on.
If the red indicator light does not switch off when you press the TEST button or it switches off repeatedly when the power tool is switched on, you must have the power tool checked by an authorised Bosch after-sales service centre.
- The power tool must not be used if the portable residual current device (PRCD) is defective.
Release the on/off switch (1). If the on/off switch is locked, press the switch first and then release it.
Wet drilling: Close the water cutoff valve (10). Once work is complete, disconnect the valve adapter (11) from the water supply line. Open the water cutoff valve (10) and drain off the residual water.
The restart protection feature prevents the power tool from uncontrolled starting after the power supply to it has been interrupted.
To restart the tool, press the RESET button on the portable residual current device (PRCD) (16). Set the on/off switch (1) to the off position and then switch the power tool on again.