Grundfos CRNF 1-17 CRFlex Solar Surface Pump

CRNF 1-17


CRFlex for remote water delivery systems

  • The Grundfos CRFlex in-line multi-stage solar surface pump is designed for renewable energy supply and can operate in remote areas lacking mains electricity. Powered by a solar panel, the system is especially suitable for supplying water in applications such as the watering of livestock, pressure boosting and irrigation.
  • The CRFlex solar surface pump comes with the MGFlex motor. We can deliver a complete solution including solar panels, IO 50 switch box, level switch for the water reservoir, water pipe, non-return valve and optional dry-running switch. This solution offers the benefits of easy installation, maintenance confined to periodic cleaning of the solar panels and a few, simple components.

Suitable for:

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

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



Smart Control

  • The smart internal motor control (Max. Power Point Tracking) adjusts pump speed accordingly to Solar DC power input.

Low Power Consumption

  • A highly efficient motor means less power is required from solar panels to operate the pump

High Quality Materials

  • Wetted components are of high grade stainless steel construction to ensure a long, trouble-free life

Permanently Protected

  • Features electrical and overheating motor protection for added peace of mind

Wide Voltage Range

  • Able to work under widely fluctuating AC/DC voltages.


Pump speed on which pump data are based 3501 rpm
Rated flow 2.2 m³/h
Rated head 116.4 m
Stages 17
Impellers 17
Shaft seal arrangement Single
Code for shaft seal HQQE
Approvals for drinking water WRAS,ACS
Curve tolerance ISO9906:2012 3B
Pump version A
Model A



Pump housing Stainless steel, AISI 316, EN 1.4408
Impeller Stainless steel, DIN W.-Nr. 1.4401, AISI 316
Material code A
Code for rubber E



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
Connect code CA



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



Motor type 90SC
Power input - P1 1.73 kW
Rated power - P2 1.5 kW
Rated voltage ac 1 x 90-240 V
Rated voltage dc 30 - 300 V
Rated current 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
Built-in motor protection ELEC
Motor No 98190192




Grundfos CRNF 1-17 CRFlex Solar Surface Pump Brochure Grundfos CRNF 1-17 CRFlex Solar Surface Pump Brochure

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