Question 1 of 6
Intermediate

Which of these isn’t a key dry-run protection benefit for the installer?

Question 2 of 6
Intermediate

Which submersible pump was replaced with a Grundfos SQ?

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

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

Question 5 of 6
Intermediate

What is the benefit of a slow increase in speed?

Question 6 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 6 of 6
Intermediate

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1: Which of these isn’t a key dry-run protection benefit for the installer?
The installer can avoid costly callbacks
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1: Which of these isn’t a key dry-run protection benefit for the installer?
The installer doesn’t have to worry about additional components
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1: Which of these isn’t a key dry-run protection benefit for the installer?
The installer doesn’t have to worry about water bursts
2: Which submersible pump was replaced with a Grundfos SQ?
A 4” submersible pump 
2: Which submersible pump was replaced with a Grundfos SQ?
A 3” submersible pump
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2: Which submersible pump was replaced with a Grundfos SQ?
A 5” submersible pump 
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3: How long did it take to replace the pump with a Grundfos SQ?
30 minutes
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3: How long did it take to replace the pump with a Grundfos SQ?
60 minutes
3: How long did it take to replace the pump with a Grundfos SQ?
90 minutes
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4: 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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4: 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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4: 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.
5: What is the benefit of a slow increase in speed?
It keeps the motor current low
5: What is the benefit of a slow increase in speed?
It keeps pump movements at a minimum
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5: What is the benefit of a slow increase in speed?
It removes the need for motor contactors
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6: 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.
6: Why is correct sizing of the submersible pump important?
Because too small a pump will pump the well dry.
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6: 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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