The CRNE pumps are based on the CRN pumps. CRNE pumps belong to the so-called E-pump family and are referred to as E-pumps. CRNE pumps are fitted with an E-motor, i.e. a motor with built-in variable frequency drive. The E-pump motor is a Grundfos MLE motor. The built-in frequency converter enables continuously variable control of the motor speed. This means that the pump can be set to operate at any duty point. The purpose of continuously variable speed control of the motor speed is to adjust the performance to a given requirement. CRNE pumps are available with a pressure sensor enabling the control of the pressure on the outlet side of the pump. The purpose of supplying the E-pumps with a pressure sensor is to make the installation and commissioning simple and quick. All other E-pumps are supplied without sensor.