Functional principle

Level and pressure measurement is via a two-position control for each pump. The pumps are individually switched on/off automatically, depending on the fill level or the actual pressure. An optical signal is given upon reaching the dry run or high water level. All pumps are also switched on or off by force. Faults are stored in the fault memory.

The current operating data and operating conditions are shown on the LCD display and indicated by LEDs. Operation and input of operating parameters is carried out using a rotary knob.

The switchgear can operate in three different operating modes:

• Filling
• When the liquid level in one or two tanks drops, the pumps are automatically switched on individually and deactivated again when the level rises.
• Draining
• When the liquid level in one or two wells rises, the pumps are automatically switched on individually and deactivated again when the level falls.
• Pressure control
• The pumps are switched on/off individually and automatically depending on the actual pressure on the output side of the system.