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Grundfos SQFlex

Grundfos SQFlex

Grundfos SQFlex

This Grundfos SQFLex is an industry-leading submersible pump for water lifts of up to 800'. With the proper controller, SQFlex pumps can be directly powered by solar or wind or can be run on an inverter, a generator, a battery, the utility grid, or any combination of these sources. Virtually any source of power, 30 to 300 VDC and 90 to 240 VAC, can be used to run this pump. It can operate on a series string of PV modules with a total peak power voltage of at least 30 VDC, but its efficiency will be highest at voltages over 100 VDC (10% less efficient at 60 VDC, and 20% less efficient at 35 VDC). Its motor is designed to draw a maximum of 8.4 A, which means that many types of PV modules can be used with this pump efficiently, including common 60 cell modules. SQFlex models 3SQF through 11SQF will fit into a 3" well and models 16SQF-10 through 60SQF3 will fit into a 4" well.

The 11 different pump models available can deliver from 82 gpm at 6' of head to 4 gpm at 800' with a 1.6 kW or smaller solar array. Use the helical rotor pumps (models 3, 6 and 11) for high head applications and centrifugal pumps (models 16, 25, 40, and 60) for low head applications for best efficiency. The SQFlex has built-in protection from dry-running, overloading, and overheating.

The Whisper 200-120 V wind generator can be connected directly to a SQFlex pump. Use the Grundfos IO-102 Wind interface in place of the Whisper 200 Controller.

SQFlex pumps have a 2-year warranty from the date of purchase. A 5-year extended warranty is available.

Grundfos SQFlex Optional Controls


SQFlex controls can be combined if you need more features than one control can provide. The CU200 interface box communicates with the pump and monitors operating conditions. Built-in diagnostics indicate faults and dry-running, as well as display operating status, power consumption and water level switch input. The Water Level Switch interfaces with the CU200 control to turn off the pump when the tank is full. Since the CU200 control circuit uses only 15 mA, the water level switch can be located in a tank as far away as 1,640' from the pump, using a minimum #18 AWG 2-conductor wire. (see Wire and Cable.) The CU200 is covered by a standard 2-year warranty.

The IO50 control box includes cable terminations and a manual on/off switch that interfaces between a solar array and the pump to allow you to turn off the high voltage array when servicing the pump or plumbing.

The IO101 AC interface box is for using AC backup on a solar pump. An automatic transfer switch disconnects the solar array when AC power from a generator (120 VAC only), utility connection, or inverter is present. When AC power stops, it automatically reconnects the array to let the sun continue pumping. The SQFlex pumps will not function with a GFCI in the supply circuit, and should not be used where a GFCI is required.

The IO102 interface unit is used for systems powered exclusively by a wind turbine or by a combination of wind and PV.

Use the table below to choose a pump. The left column shows total head in feet and meters. The top row shows array wattage/number and suggested type of modules. Boxes show seasonal pump performance and maximum flow.

Select the row with the head (total lift) that most closely matches your application. Move across the row to the column that contains the desired daily volume or peak flow rate. Note the pump model in that block and wattage of the PV array in that column.

  60 SQF-3    

= Pump model

 

24,885

   

= Estimated daily summer volume (GPD)

 

19,944

   

= Estimated daily winter volume (GPD)

 

44

   

= Peak flow rate (gpm)

NOTE: Daily volume and flow calculations are calculated with Fresno, CA data at a 36° tilt in July, at 7.8 kWH/m2. Winter calculations are calculated with Fresno, CA data at a 36° tilt in February, at 4.7 kWH/m2. Most solar pumping systems will give significantly more output in the summer than in the winter. Also, up to 40% more water can be pumped in the summer if the array is on a tracking mount (these estimates are for non-tracking array mounting). The output can vary with different locations and years, and is not guaranteed. Contact an AEE technical person for sizing your specific system.

 

 

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GRUNDFOS, SQFLEX, 11 SQF-2, HELICAL ROTO
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, o..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 16 SQF-10, CENTRIFUGAL
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, o..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 25 SQF-3, CENTRIFUGAL
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, o..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 25 SQF-7, CENTRIFUGAL
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, or ge..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 3 SQF-2, HELICAL ROTOR
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, or ge..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 3 SQF-3, HELICAL ROTOR
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, or ge..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 40 SQF-3, CENTRIFUGAL
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, or ge..
$2,400.56
Ex Tax: $2,400.56
GRUNDFOS, SQFLEX, 40 SQF-5, CENTRIFUGAL
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, or ge..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 6 SQF-2, HELICAL ROTOR
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, or ge..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 6 SQF-3, HELICAL ROTOR
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, or ge..
$2,525.94
Ex Tax: $2,525.94
GRUNDFOS, SQFLEX, 60 SQF-3, CENTRIFUGAL
Submersible water pump can be powered directly from solar, or from battery, inverter, grid, or ge..
$2,400.56
Ex Tax: $2,400.56
GRUNDFOS, SQFLEX, IO-102, WIND TURBINE I
Wind turbine interface for SQFlex pumps.   Features Brand ..
$370.13
Ex Tax: $370.13
GRUNDFOS, SQFLEX, SQF CU200 SMART BOX SO
The CU200 communicates with the SQFlex pump to give it commands and read data. It can b..
$472.50
Ex Tax: $472.50
GRUNDFOS, SQFLEX, SQF FLOAT SWITCH, FOR
Reverse-action float switch. Openens circuit when the water storage tank is full. ..
$28.35
Ex Tax: $28.35
GRUNDFOS, SQFLEX, SQF IO-101-115V, PV/11
The IO101 allows the use of a backup AC generator with SQFlex pumps. Connection to the ..
$570.94
Ex Tax: $570.94
GRUNDFOS, SQFLEX, SQF IO-50, DISCONNECT
SQFlex on-off switch box.Used in place of a CU200 if a float or pressure switch is not needed..
$82.69
Ex Tax: $82.69
PRESSURE SWITCH REVERSE ACTION FOR GRUND
Reverse-action pressure switch. Use with CU200 for SQFlex pumps or directly with CRFlex..
$122.06
Ex Tax: $122.06
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