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Grundfos SQ Spec

Grundfos SQ series 120V well pumps 

A submersible deep well pump of 1/3 or 1/2 horsepower with 120 volt motor can pump a 300 foot well and be powered by a 2500 watt or larger inverter  

SQ, SQE pumps offer the following features:

  • Dry-Run protection
  • High efficiency pump and motor
  • Protection against up-thrust
  • Soft-start
  • Over-voltage and under-voltage protection
  • Overload protection
  • Over-temperature protection
  • High starting torque

 

The SQ and SQE pump models incorporate a totally new motor design. With the use of permanent-magnet technology within the motor, the SQ/SQE pumps deliver unmatched performance. By combining permanent-magnet motors and Grundfos’ own micro frequency converter, Grundfos are now able to control and communicate with the pump in ways never before possible.  A few of the features that come out of this combination are Constant Pressure Control, Soft-Start, and integrated Dry-Run protection.

Grundfos SQ pumps have a soft start electronic control built into the motor. Start up is gentle and extended over 2 seconds, reducing the surge of electricity required to start most other pumps.   For deeper wells, the soft start feature reduces start-up wear, twist and strain.

The Grundfos SQ series pumps are able run off of much smaller inverters and generators.  Generators  should be 2500 watt or larger.  Inverters should be 2000 watt or larger, modified sine or full sine wave form makes no difference. 

½ HP Grundfos 5SQ5A 180

 

PSI

20

40

60

80

100

120

140

160

180

200

240

260

 

0

 

 

7.9

7.5

7.1

6.7

6.2

5.6

5.1

4.4

3.6

2.6

 

20

7.8

7.4

7

6.5

6.1

5.5

4.9

4.2

3.3

2.3

0.8

 

 

30

7.3

6.9

6.5

5.9

5.4

4.8

4.1

3.2

2

0.2

 

 

 

40

6.9

6.5

5.9

5.4

4.7

4

3.1

2

0.1

 

 

 

 

50

6.3

5.8

5.3

4.6

3.8

2.9

1.6

 

 

 

 

 

 

60

5.7

5.1

4.4

3.6

2.6

1.2

 

 

 

 

 

 

Shut-off PSI

110

102

93

84

76

67

58

50

41

33

24

15

7

½ HP Grundfos 10SQ5A 160

 

PSI

20

40

60

80

100

120

140

160

180

200

 

0

14.8

14.0

13.0

12.0

11.0

10.0

8.0

5.0

 

 

 

20

14.6

13.8

13.0

12.0

11.0

9.5

7.5

4.0

 

 

 

30

13.5

12.8

11.8

10.5

9.0

7.0

2.0

 

 

 

 

40

12.8

11.8

10.5

9.0

7.0

2.0

 

 

 

 

 

50

11.5

10.2

8.5

6.0

 

 

 

 

 

 

 

60

10.0

8.0

5.0

 

 

 

 

 

 

 

Shut-off PSI

84

76

67

58

50

41

32

24

15

6

 

Remember to reduce maximum lift by 92 feet if you are using the pump with a pressure tank to 40 PSI.

Grundfos SQ series pumps do not tolerate sandy water, or excessive grit found in newly drilled wells.  Cycle new wells with an impeller or diaphragm pump to wash girt off the well walls. Grit and sand wear damage is not covered by warranty.

 Link to Grundfos web site

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Contact Us: Telephone:  toll free at 1-888-810-4709 Parry Sound,Northern Ontario,Muskoka and Georgian Bay
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Last modified: June 29, 2017