Question 1 of 6
Intermediate

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

Question 2 of 6
Intermediate

Which submersible pump was replaced with a Grundfos SQ?

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

Is the SQE pump able to provide constant pressure?

Question 5 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 6 of 6
Intermediate

How many times higher than nominal speed does the motor current reach during the first milliseconds?

Question 6 of 6
Intermediate

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1: How long did it take to replace the pump with a Grundfos SQ?
30 minutes
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1: How long did it take to replace the pump with a Grundfos SQ?
60 minutes
1: How long did it take to replace the pump with a Grundfos SQ?
90 minutes
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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: 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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3: Why must the pump unit be installed below the dynamic water table?
To avoid the risk of dry-running during operation.
3: Why must the pump unit be installed below the dynamic water table?
To maintain a stable pressure in the system.
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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 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: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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6: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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6: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher