Question 1 of 6
Intermediate

How does the integrated dry-running protection work?

Question 2 of 6
Intermediate

Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?

Question 3 of 6
Intermediate

In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?

Question 4 of 6
Intermediate

Why must the pump unit be installed below the dynamic water table?

Question 5 of 6
Intermediate

How many times higher than nominal speed does the motor current reach during the first milliseconds?

Question 6 of 6
Intermediate

The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?

Question 6 of 6
Intermediate

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1: How does the integrated dry-running protection work?
It automatically restarts 3 minutes after shut down.
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1: How does the integrated dry-running protection work?
It prevents sand from damaging the pump.
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1: How does the integrated dry-running protection work?
It automatically shuts down the pump if water shortage is detected.
2: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
Groundwater lowering & Irrigation
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2: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
Domestic water supply & Groundwater lowering
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2: Which are the two most common applications in which a Grundfos SQ/SQE submersible pump is used?
Domestic water supply & Irrigation
3: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
Soft start reduces over-pressure in your piping.
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3: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
It reduces the occurrence of water hammer in the pipes and minimises wear during start-up.
3: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
Soft start prevents the motor from getting warm.
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4: Why must the pump unit be installed below the dynamic water table?
So you are sure to minimise your power bill.
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4: Why must the pump unit be installed below the dynamic water table?
To avoid the risk of dry-running during operation.
4: Why must the pump unit be installed below the dynamic water table?
To maintain a stable pressure in the system.
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5: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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5: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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5: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher
6: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In wells with water temperature up to 60° C.
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6: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In installations that require constant pressure.
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6: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In original 4” boreholes where sediments over the years have narrowed the hole.