Pressure Reduction

Metering enable is cancelled on entering PRESSURE REDUCTION mode.

This status reduces the pressure in the delivery module, metering line and the metering module after PRESSURE CONTROL mode. For this purpose, the reversing valve is opened and the pump actuated at a certain value, the metering valve is closed.

PRESSURE REDUCTION mode ends when the pressure drops below a certain value. The system assumes NO PRESSURE CONTROL mode if the pressure threshold is reached (undershot) within a defined time.

The system signals a fault if the pressure does not drop below the threshold after a defined time has elapsed. In this case or also in the case of another fault, the system assumes NO PRESSURE CONTROL mode. NO PRESSURE CONTROL mode is also assumed when terminal 15 is switched on.