The Sirio KE inverter uses frequency converter technology, which regulates the speed of the electric motor of the deep well pump based on the current water consumption, resulting in considerable energy savings. The inverter technology ensures that you have constant pressure in your water pipe at all times. The pump is stopped immediately by the inverter if there is no water in the well; this dry-running protection prevents damage to the motor due to overheating. The dry-running protection is supplemented by an automatic reset function, which restarts the pump briefly at preset intervals in the event of a stop due to a water shortage in order to check completely automatically whether water is available again. In the event of malfunctions, such as the pump running dry, you will receive an error message on the digital display with a precise description of the error.,

Properties of the inverter

• Constant pressure thanks to speed control of the electric pump
• Energy saving thanks to lower power consumption of the pump
• Smooth start-up and run-down of the pump to reduce pressure surges
• Dry-running protection in the event of a water shortage
• Automatic reset in the event of a shutdown due to dry running, so that the fault is reset automatically
• Effective leakage control up to 3 l/min to protect the pump from constant restarts
• Blockage protection
• Intelligent heat management for a longer service life of the inverter
• Digital pressure, current, voltage and frequency indication on the display
• Indication of the various operating modes/errors via LEDs and messages on the display
• Auxiliary contacts for remote control, dual pump operation and second set pressure
• Soft start selectable if required for soft start of the pump
• Operation with and without flow monitor (for ferrous water or water that is not one hundred percent pure)
• Must not be installed in damp environments or in areas with high humidity

Protective functions

• Dry running
• Overpressure
• Undervoltage
• Overvoltage
• Short circuit
• Current monitoring at the motor output
• Overheating of the inverter
• Protection against major leaks with constant restarts of the pump