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Water Pumps
Water Pumps
WINDPOWER
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SQFlex
The Grundfos SQ Flex pumping systems are a giant leap forward for solar water pumping. Grundfos, the worlds
largest pump manufacturer, has reduced the cost of the pumps along with reducing the power needs. The result
is a Grundfos centrifugal or helical rotor quality system for about the cost of a diaphragm pump. The Grundfos SQ
Flex pumping system can also be powered by a wind generator if you have the right site. The Whisper WHI-200
Waterpumper on page 53 is the required generator.
Features:
Up to 390 foot head applications 30-300 Vdc, or 90-240 Vac single-phase AC input.
Permanent magnet high efficiency motor Overload protection Over temperature protection Dry running protection
Maximum Power Point Tracking to optimize pump operation according to DC Power available.
Power line communication with the CU200 (optional) to display operational conditions
Grundfos
SQFlexPerformanceRange
SQFlexPumps
Model
TDH Range Ft.
Nominal GPM
Length in.
NPT Output Size in.
MSRP
3 SQF-2
120 - 390
3
47
1
$1,849.00
6 SQF-2
120 - 390
6
48
1
$1,849.00
11 SQF-2
40 - 300
11
49
1 1/4
$1,849.00
25 SQF-3
0 - 40
25
33
1 1/2
$1,849.00
25 SQF-6
0 - 60
25
35
1 1/2
$1,849.00
40 SQF-3
0 - 20
40
37
2
$1,849.00
75 SQF-3
0 - 40
75
39
2
$1,849.00
Accessories
MSRP
IO 100 Simple On/Off switch box for Grundfos SQFlex solar electric system. No float switch terminals.

*Use CU200 pump controller for the Grundfos SQ Flex if a float switch is needed.
$139.00
IO 101 Generator Interface Box for Grundfos SQFlex. Includes On/Off switch (replaces IO 100) and allows for operation of

SQFlex pump for either solar or manual-start generator. No float switch terminals. *Add a CU200 pump controller for the

Grundfos SQFlex if a float switch is needed.
$399.00
IO 102 Wind Generator Breaker Box. This box includes a rectifier for the wind generator and a stop switch, and allows the

Grundfos SQFlex pump to operate from either the H80 wind generator or a combination of wind and solar. *Add a CU200

pump controller for the Grundfos SQFlex if a float switch is needed.

$365.00
CU 200 SQFlex Control Box. This controller and system monitor can be used with solar alone or in combination with the IO101 (for

manual generator backup) and/or the IO102 ( for wind generator ). The CU200 will allow you to add a float switch to shut off

the pump when the storage tank is full. The system monitor display on the CU200 shows the following: Pump operation

Full Tank Input Power ( Watts ) Alarm Indicator for dry running, overvoltage, overload and overtemperature.
$315.00
Water Level Switch Mechanical float switch
$19.00 WINDPOWER
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Water Pumps
Grundfos
continued
SQFlexSolarApplicationExample
System Spotlight
Grundfos SQ Flex water pumping system
in Southern Wyoming
LOCATION:
Wyoming
APPLICATION:
Water pumping for livestock
SYSTEM:
1440 Watt Grundfos
water pumping system