Question 1 of 6
Intermediate

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

Question 2 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

What happens if the static water level is too low?

Question 5 of 6
Intermediate

What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?

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: 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.
2: Why is correct sizing of the submersible pump important?
Because too small a pump will pump the well dry.
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2: 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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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: What happens if the static water level is too low?
The pump overheats
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4: What happens if the static water level is too low?
The water level is brought down below the inlet of the pump
4: What happens if the static water level is too low?
The motor shuts down
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5: 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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5: 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
5: 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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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