Question 1 of 6
Intermediate

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

Question 2 of 6
Intermediate

What happens if the water level in the well drops below the inlet?

Question 3 of 6
Intermediate

By how much does the supply voltage decrease before the motor contactor stops the pump?

Question 4 of 6
Intermediate

What is the benefit of a slow increase in speed?

Question 5 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 6 of 6
Intermediate

How does the integrated dry-running protection work?

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 happens if the water level in the well drops below the inlet?
The motor power consumption drops
2: What happens if the water level in the well drops below the inlet?
The motor power consumption stays the same
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2: What happens if the water level in the well drops below the inlet?
The motor power consumption increases
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3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 10 %
3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 15 %
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3: By how much does the supply voltage decrease before the motor contactor stops the pump?
More than 20 %
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4: What is the benefit of a slow increase in speed?
It keeps the motor current low
4: What is the benefit of a slow increase in speed?
It keeps pump movements at a minimum
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4: What is the benefit of a slow increase in speed?
It removes the need for motor contactors
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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 does the integrated dry-running protection work?
It automatically restarts 3 minutes after shut down.
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6: How does the integrated dry-running protection work?
It prevents sand from damaging the pump.
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6: How does the integrated dry-running protection work?
It automatically shuts down the pump if water shortage is detected.