Grundfos CRNF 5-6 CRFlex Solar Surface Pump

CRNF 5-6


Vertical multistage pumps with Renewable MGFlex motor for solar, wind and AC powersource. Runs on both AC and DC voltage

Suitable for:

  • Controls & Digital Groundwater Management
  • Solar water solutions
  • Solar Controls & Digital Water Management
  • Solar Water Treatment Fertigation & Dosing
  • Community water supply


CRIF, CRNF is a vertical, centrifugal multi-stage pump. This inline (non-self-priming) pump is suitable for in-pipe systems and designed for mounting on a foundation.

The MGF motor of the pump is suitable for both DC and AC supply. As the motor electronics incorporate motor protection, no further motor protection is required. The Maximum Power Point Tracking (MPPT) software allows the motor to operate efficiently connected to a solar panel.

Motor P1 is 1250 W, and maximum speed is 3350 rpm

An external sensor can be connected in order to control the pump operation.



Pumped liquid: Water
Liquid temperature range: -20 .. 120 °C
Selected liquid temperature: 20 °C
Density: 998.2 kg/m³



Pump housing Stainless steel, AISI 316, EN 1.440
Impeller Stainless steel, DIN W.-Nr. 1.4401, AISI 316



Max ambient temperature: 50 °C
Maximum operating pressure: 25 bar
Max pressure at stated temp: 25 bar / 120 °C, 25 bar / -20 °C
Type of connection: FlexiClamp
Size of connection: DN 32
Flange size for motor FT115



Motor type: 90SC
Power input - P1: 1.73 kW
Rated power - P2: 1.5 kW
Rated voltage ac: 1.5 kW
Rated voltage dc: 30 - 300 V
Rated voltage dc: 8.9 A
Cos phi - power factor: 0.99
Rated speed: 500-3600 rpm
Enclosure class (IEC 34-5 IP55
Insulation class (IEC 85): F
Motor No: 98190192



Grundfos CRNF 5-6 CRFlex Solar Surface Pump Brochure Grundfos CRNF 5-6 CRFlex Solar Surface Pump Brochure

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