Question 1 of 6
Intermediate

Where is domestic groundwater extraction typically relevant?

Question 2 of 6
Intermediate

What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?

Question 3 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 4 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 5 of 6
Intermediate

How long did it take to replace the pump with a Grundfos SQ?

Question 6 of 6
Intermediate

Which submersible pump was replaced with a Grundfos SQ?

Question 6 of 6
Intermediate

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1: Where is domestic groundwater extraction typically relevant?
In big cities.
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1: Where is domestic groundwater extraction typically relevant?
In remote areas where it is too costly to extend the municipal water supply to just a few houses.
1: Where is domestic groundwater extraction typically relevant?
In smaller and medium sized towns.
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2: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
Between 100 V and 250 V
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2: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
Between 150 V and 315 V
2: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
Between 230 V and 400 V
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3: Why is correct sizing of the submersible pump important?
Because an undersized pump will not be able to deliver the required flow and pressure and an oversized pump reduces energy efficiency, which increases operational costs.
3: Why is correct sizing of the submersible pump important?
Because too small a pump will pump the well dry.
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3: Why is correct sizing of the submersible pump important?
Because too big a pump will ruin the taps due to too high pressure.
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4: 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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4: 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.
4: 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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5: How long did it take to replace the pump with a Grundfos SQ?
30 minutes
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5: How long did it take to replace the pump with a Grundfos SQ?
60 minutes
5: How long did it take to replace the pump with a Grundfos SQ?
90 minutes
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6: Which submersible pump was replaced with a Grundfos SQ?
A 4” submersible pump 
6: Which submersible pump was replaced with a Grundfos SQ?
A 3” submersible pump
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6: Which submersible pump was replaced with a Grundfos SQ?
A 5” submersible pump 
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