Question 1 of 6
Intermediate

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

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

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

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

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

Question 6 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 6 of 6
Intermediate

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1: 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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1: Why must the pump unit be installed below the dynamic water table?
To avoid the risk of dry-running during operation.
1: Why must the pump unit be installed below the dynamic water table?
To maintain a stable pressure in the system.
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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: 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: 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: Which of these isn’t a key dry-run protection benefit for the installer?
The installer can avoid costly callbacks
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5: 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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5: Which of these isn’t a key dry-run protection benefit for the installer?
The installer doesn’t have to worry about water bursts
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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