Direction control – Use the direction control button and indicators to set the appliance to move forwards or move backwards. The appliance is default set in forward mode. Press the button, the backward indicator will light and the unit will move backward. Press the button again, the forward indicator will light and the unit will move forward.

Brush speed control – The brush rotation speed can be set in 2 settings: slow mode of 800 rpm (for smooth surfaces) and fast mode of 1000 rpm (for rough surfaces). The appliance is default set in fast mode. Press the speed control button, the slow mode indicator will light and the appliance will run in slow mode. Press the speed control button again to change to fast speed.

Error indicator – The error indicator will flash in red to indicate overcurrent, and the appliance will automatically shut down.