25 SQF-3 SQFlex Solar Pump
Grundfos 25 SQF-3 SQFlex Solar Pump
Whether it's used for livestock watering, a pressure system on a remote cabin, or for irrigation, the SQFlex system can be tailored to meet any requirements. Based on the location, depth to water, and the volume of water required, Grundfos' exclusive sizing program finds the best pump and most efficient energy source for your application. The SQFlex system from Grundfos is not just another solar pump; it's a revolution in remote water supply. Designed for maximum reliability, maintenance-free operation, and the flexibility to adapt to virtually any application, SQFlex provides water wherever necessary and whatever the local conditions. Eleven different pump models cover a wide range of heads and flows to allow pumping at extended depths (820 ft) or at high flow rates (80 gal/min) or anywhere in between, depending on your requirements.
Potential SQ Flex applications include:
Features of the Grundfos 25 SQF-3 SQFlex Solar Pump:
Also Known As:
Also Known As:
|Pump Model||Pump Type||Max Head||Max Flow|
|3 SQF-2||Helical Rotor||395 ft||3 gal/min|
|3 SQF-3||Helical Rotor||655 ft||3 gal/min|
|6 SQF-2||Helical Rotor||395 ft||6 gal/min|
|6 SQF-3||Helical Rotor||820 ft||6 gal/min|
|11 SQF-2||Helical Rotor||395 ft||13 gal/min|
|16 SQF-10||Centrifugal||230 ft||22 gal/min|
|25 SQF-3||Centrifugal||50 ft||40 gal/min|
|25 SQF-6||Centrifugal||90 ft||39 gal/min|
|25 SQF-7||Centrifugal||185 ft||40 gal/min|
|40 SQF-3||Centrifugal||50 ft||70 gal/min|
|40 SQF-5||Centrifugal||100 ft||70 gal/min|
|60 SQF-3||Centrifugal||50 ft||80 gal/min|
|Technical Data||SQF Pump|
|Power supply to pump||30-300 VDC, PE.|
1 x 90-240 V —10%/+6%, 50/60 Hz, PE.
|Run-up time||Depends on the energy 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 a water level electrode
• overvoltage and undervoltage • overload • overtemperature.
|Conductivity||≥70 μs/cm (micro siemens).|
|Sound pressure level||The sound pressure level of the pump is lower than the limiting values stated in the EC Machinery Directive.|
|Radio noise||The SQF complies with the EMC Directive 89/336/EEC. Approved according to the standards EN 61000-6-2 and EN 61000-6-3.|
|Reset function||The SQF can be reset via the CU 200 or by disconnecting the power supply for 1 minute.|
|Power factor||PF = 1.|
|Operation via generator||Voltage: 230 VAC —10%/+6%.|
The generator output must be
• minimum 1000 W (helical rotor pumps)
• minimum 1500 W (centrifugal pumps).
|Earth-leakage circuit breaker||If the pump is connected to an electric installation where an 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||3 SQF, 6 SQF, 11 SQF: Minimum: 3 in.|
16 SQF, 25 SQF, 40 SQF, 60 SQF: Minimum: 4 in.
|Installation depth||Minimum: The pump must be completely submerged in the pumped liquid. Maximum: 500 ft below the static water table (220 psi).|
|Suction strainer||Holes of the suction strainer: 3 SQF, 6 SQF, 11 SQF: ø0.090 in.|
16 SQF, 25 SQF: ø0.10 in.
40 SQF, 60 SQF: 0.16 in x 0.80 in.
|Pumped liquids||pH 5 to 9. Sand content up to 50 ppm.|