Question 1 of 6
Intermediate

What is the benefit of a slow increase in speed?

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

Where is domestic groundwater extraction typically relevant?

Question 4 of 6
Intermediate

By how much does the supply voltage decrease before the motor contactor stops the pump?

Question 5 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 6 of 6
Intermediate

Which submersible pump was replaced with a Grundfos SQ?

Question 6 of 6
Intermediate

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1: What is the benefit of a slow increase in speed?
It keeps the motor current low
1: What is the benefit of a slow increase in speed?
It keeps pump movements at a minimum
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1: What is the benefit of a slow increase in speed?
It removes the need for motor contactors
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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: Where is domestic groundwater extraction typically relevant?
In big cities.
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3: 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.
3: Where is domestic groundwater extraction typically relevant?
In smaller and medium sized towns.
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4: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 10 %
4: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 15 %
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4: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 20 %
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5: 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.
5: Why is correct sizing of the submersible pump important?
Because too small a pump will pump the well dry.
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5: 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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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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