Grundfos 6 SQF-2 SQFlex Submersible Solar Pump

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Item Number: 95027334

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Grundfos is one of the world's largest manufacturers of pumps, providing water for homes, farms, commercial buildings, and industrial uses. Featuring unique stainless steel construction and the latest in electronics, Grundfos pumps are recognized for reliability and value throughout world-wide -- wherever water moves. Grundfos maintains an extensive network of manufacturer representatives, distributors, and dealers to serve customers nationwide. SQFlex pumps The complete SQFlex pump range consists of 7 different pump sizes: 4 centrifugal and 3 helical rotor pumps. All pumps are fitted with the same size motor which, together with the new sizing tools, makes system sizing simple. The SQFlex system is a reliable water supply system especially suitable for remote locations not connected to the electricity
supply grid. 

Grundfos 6 SQF-2 Submersible Pump

  • Type: Helical Rotor
  • Max Head: 395 ft
  • Max Flow: 6 gal/min
  • 30-300 VDC and 90-240 VAC, can be used to run the pump (either DC or AC voltage supply)
  • 50hz or 60hz (both)
  • SQFlex 3SQF through 11SQF pumps will fit into a 3" well.
  • Can deliver from 82 gpm at 6 feet of head to 4 gpm at 800 feet with a 1.6 kilowatt solar array or less.
  • Helical rotor pumps (models 3, 6 and 11) for high head applications
  • Centrifugal pumps (models 16, 25, 40, and 60) for low head applications assure a pump that is efficient for any use. 

Supply to pump 1 x 90 - 240 V –10%/+6%, 50/60 Hz. 30 - 300 VDC.
Run-up time Depending on power source.
Start/stop No limitation to the number of starts/stops per hour.
Enclosure class IP 68
Motor protection Built into the pump. Protection against: - Dry running by means of an external water level electrode. - Overvoltage and undervoltage. - Overload. - Overtemperature.
Sound pressure level The sound pressure level is lower than the limiting values stated in the EEC Machinery Directive.
Radio noise SQF comply with EMC Directive 89/336/EEC. Approved according to EN 50081-1 and 50082-2.
Reset function SQF can be reset via CU 200 or by disconnecting the power from the power supply in 1 minute.
Power factor PF = 1.

Operation via generator

Voltage: 230 VAC, –10%/+6.;

It is recommended that the generator output must be equal to the motor input power P1 [kW] plus 50%. Minimum: P1 [kW] plus 50%.

If the pump is connected to an electrical installation where an earth-leakage circuit breaker

Earth leakage circuit breaker (ELCB) is used as an additional protection, this circuit breaker must trip out when earth fault  currents with DC content (pulsating DC) occur.
Borehole diameter SQF 0.6, SQ 1.2, SQF 2.5: Minimum: 76 mm. SQF 5A, SQF 8A, SQF 14A: Minimum: 104 mm.
Installation depth Min.: The pump must be totally submerged in the pumped liquid. Max.: 150 m below the static water table (15 bar).
Strainer Holes of the strainer:

SQF 0.6, SQF 1.2, SQF 2.5: ø2.3 mm. SQF 5A: ø2.5 mm.  SQF 8A, SQF 14A: 4 mm x 20 mm.

Pumped liquids pH 5 to 9. Sand content up to 50 g/m³.
Marking CE
2 year Manufacturers Warranty from the date of purchase

Wiring diagram for pump


Connection of the MSF motor to the power supply must  be done according to the wiring diagram shown below. As the intelligent motor electronics can handle both connection possibilities, it makes no difference how the wires "+" and "–" or "N" and L" are connected


                 30 - 300 VDC                                 1 x 90 - 240 V


Performance Curve for 6 SQF - 2 Grundfos Pump


Grundfos Sqflex Helical Rotor Pump, 6 Gpm, 6-Sqf-2

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