ALFRA ROTABEST RB 35 SP Mode D'emploi page 18

The M E
OTOR
Risk of injury.
The user bears sole responsibility for the proper, safe handling of the core drilling machine.
After completion of the drilling process, turn off the motor as usual. The machine is now back in normal mode with
its sensor safety function.
Motor LED on the Operating Panel
The LED on the operating panel signals the state of the motor along with its temperature and the state of the
carbon brushes.
LED off
LED green
LED green
LED green
Carbon Brush Wear Control
The core drilling machine has an integrated carbon brush wear control feature, so that the motor LED flashes red
as soon as the carbon brushes have been worn down to a certain level by mechanical abrasion. Replace the
carbon brushes as soon as possible and always both at the same time.
In order to replace the carbon brushes, remove the black plastic cap on the top of the motor. Insert two new
brushes, clamp in the groove with the spring and connect the supply cables.
Always replace both carbon brushes.
Poor maintenance leads to a defective motor.
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S function is also deactivated.
MERGENCY TOP
Motor off
Motor on
Carbon brushes are worn and must be replaced
Motor overheated due to excess load
The motor can be activated again after it has cooled off