Grundfos SQFlex Pumping Systems
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Grundfos has an exciting new line of submersible pumps
called SQFlex that can deliver more water each day per watt of input
power than any other pump on the market. The "flex" in SQFlex
is for flexibility since these pumps can be powered by solar modules, a
wind turbine, an AC generator, or a combination of these power sources.
You can use any brand of solar module to power a SQFlex pump, but you
must use a specially designed high-voltage Whisper H80 wind turbine if
you want to power them from the wind. There are 10 pumps in the SQFlex
line, 4 featuring a 3" diameter positive-displacement helical rotor
pump head best suited for deep well low-volume requirements, and
6 featuring a 4" centrifugal pump head best suited for low-head high- volume requirements. The maximum lift with the helical rotor
pumps is 600’, while the maximum flow rate with the centrifugal pumps is
85 gpm. All 10 pumps use the same super efficient
3" diameter MFS 3 motor/power converter assembly that will accept a
wide range of input voltages (30-300VDC or 90-240VAC). This motor
provides high torque yet a "soft-start," non-surging
capability. The power converter protects the motor from over/under
voltage, overload, over temperature, blocked outlet conditions, and from
running dry via a water level electrode that is attached to the 6' motor
cable. These pumps are so durable and reliable that they don't need to
be pulled for servicing every 2-3 years like some diaphragm pumps; just
set it and forget it. This can save a lot of time, money, and hassle
over the life of the system and might keep your livestock from going
thirsty while your pump is being pulled and repaired. |
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Grundfos offers three separate pump controllers to be used with the SQFlex pumps based on your power source and whether or not you plan to
use a float switch. The simplest controller is the IO-100 which is
basically a wiring connection box with an ON/OFF switch and it is
designed for solar direct systems. The IO-101 controller is also
designed for solar direct systems, but it allows you to connect a 120VAC
generator as an auxiliary power source. For example; if your solar
powered SQFlex pumping system is not producing enough water due to
extended heavy overcast conditions, you can manually start your
generator and it will power the pump. When the generator stops running
(manually shut off or if it runs out of gas), the IO-101 controller
automatically switches back to the solar array and the pump will run if
there is sufficient sunlight. The most sophisticated controller is the
CU-200 which can be used for solar or wind powered systems. The CU-200
is a combined status, control and communication unit which allows the
connection of a float switch in your tank that will allow the controller
to automatically turn the pump on/off based on water level. It
communicates with the pump via the power supply wires and is able to
provide alarm indications for dry running, lost connection to pump, over
voltage, over temperature and overload. |
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To make sizing a SQFlex pumping system easy, Grundfos created a
simple Windows based sizing program called WinCAPS which takes the
guesswork out of sizing a pumping system. WinCAPS takes into account
your location (city/state or lat/long), daily volume requirement, month
of peak demand, total dynamic head, power source (solar module and/or
Whisper H80 wind turbine), type of solar module mount structure (fixed
or tracking) and prints out which SQFlex pump and power source will best
meet your needs along with a daily system performance chart for each
month of the year. Sizing, purchasing, installing and operating a solar
or wind powered water pumping system couldn't be any easier than with
the Grundfos SQFlex pumps and controllers. You can see the prices of the
Grundfos SQFlex pumps and controllers below, but give us a call or send
us an e-mail with the particulars of your pumping application (fill out
our Water Pumping Questionnaire by
clicking here) and we can quickly
prepare an accurate system design and quote for you. |
Due to a new Grundfos policy, we are not able to
list any of their pumping equipment costs.
Please call us at
1-406-777-4321 for your pricing.
| Pump Model |
Pump Type |
Max Head |
Max Flow |
3 SQF-2
6 SQF-2
11 SQF-2 |
helical rotor |
525 ft.
400 ft.
325 ft. |
3 gal/min.
6 gal/min.
11 gal/min. |
25 SQF-3
25 SQF-6
40 SQF-3
75 SQF-3 |
Centrifugal |
50 ft.
100 ft.
50 ft.
50 ft. |
25 gal/min.
25 gal/min.
40 gal/min
75 gal/min. |
Other Components:
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IO-100 solar control box with on/off switch
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IO-101 solar/generator control box
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IO-102 wind turbine controller
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CU-200 solar controller & status indicator (for use
with float switch)
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Float switch
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