Distribution device, liquid distribution actuator, cleaning device, vehicle and method of operating a cleaning device

A cleaning device for a vehicle for cleaning a multiplicity of cleaning locations on the vehicle, the cleaning device further comprising at least one liquid-distributing actuator, the at least one liquid-distributing actuator further comprising:

• a distributing device, further comprising:
• a housing;
• a distributor arranged and drivable within the housing;
• a feed connector;
• a plurality of discharge connectors;
• a plurality of individual positions into which the distributor is selectively adjustable relative to the housing, the plurality of individual positions further comprising:
• individual distributing positions, in which the distributor fluidically connects the feed connector, which is subjected to liquid pressure, to one of the plurality of discharge connectors;
• a bypass position, in which the distributor forms a bypass for preventing a discharge of the liquid to one of the cleaning locations and for returning the liquid to a tank;
• or a shut-off position, which prevents both the discharge and the return;
• and
• an electric motor for driving the distributor;
• wherein the cleaning device is configure to
• a defined hydraulic pressure state in the cleaning device by adjusting the distributor into the bypass position or into the shut-off position, such that in the respective position liquid is conveyed into the distributing device by a conveying pump at a settable pump reference rotational speed;
• generate a first, minimum pressure level being in the cleaning device when the distributor is in the bypass position;
• generate a second, maximum pressure level in the cleaning device when the distributor is in the shut-off position;
• detect and store the minimum pressure level and the maximum pressure level for diagnostic purposes as reference values in a memory of a control unit.