Question 1 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 2 of 6
Intermediate

What is the benefit of a slow increase in speed?

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

Is the SQE pump able to provide constant pressure?

Question 5 of 6
Intermediate

Why is it important to protect the pump from over- and under voltage?

Question 6 of 6
Intermediate

Which submersible pump was replaced with a Grundfos SQ?

Question 6 of 6
Intermediate

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1: 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.
1: Why is correct sizing of the submersible pump important?
Because too small a pump will pump the well dry.
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1: 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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2: What is the benefit of a slow increase in speed?
It keeps the motor current low
2: What is the benefit of a slow increase in speed?
It keeps pump movements at a minimum
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2: What is the benefit of a slow increase in speed?
It removes the need for motor contactors
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3: 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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3: 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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3: 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.
4: Is the SQE pump able to provide constant pressure?
No.
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4: Is the SQE pump able to provide constant pressure?
Yes.
5: Why is it important to protect the pump from over- and under voltage?
Because large variations in power supply will damage the motor over time.
5: Why is it important to protect the pump from over- and under voltage?
To avoid burning the house fuses.
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5: Why is it important to protect the pump from over- and under voltage?
To minimise the power consumption.
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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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