8
Switching on and off
Short-Time Operation
Switching-on: press the on/off switch
Switching-off: release the on/off switch
Permanent Operation
Switching-on: press the on/off switch and, keeping it pressed, engage the
lock-on button
Switching-off: press the on/off switch and release it again
!
Attention!
In case of every stop of the machine or a power cut, the
lock-on button has to be released immediately by pressing
the ON/OFF switch. So you can avoid an unintentional
restart of the machine (physical hazard).
Overload Protection
To protect operator, machine and tool the concrete grinder is equipped with
an electronic overload protection:
To warn the user against an overload of the machine due to too high
grinding pressure, a LED is attached to the motor housing. It does not light
during idle run or at normal load. When the unit is overloaded the LED
lights red, in this case, the unit must be stress-relieved. You can continue
working after having stress-relieved and switching OFF and ON the power
tool again.
Changing the Diamond Grinding Wheel
Attention!
The grinding wheel might heat up enormously during operation. You
could burn your hands or get cut or ripped by the segments.
Therefore, always use protective gloves when changing the grinding
wheel.
Before any work on the tool, disconnect the plug from the mains!
