In the TRAC TRONIC and ECO versions, the detergent flow can be controlled via the multifunctional display on the control panel. The amount of detergent to be dispensed onto the floor can be adjusted by pressing the "+" or "-" buttons.
When 5 LEDs are activated, the impressive maximum flow rate of 5.3 l/min is achieved.
In other versions of this scrubber-dryer, the detergent flow is mechanically controlled via a lever that acts as a regulating valve.
