Question 1 of 8
Intermediate

What can be done to the well if sand continues to enter a well after the well development has been carried out?

Question 2 of 8
Intermediate

What should the minimum flow past the motor be to ensure sufficient motor cooling?

Question 3 of 8
Intermediate

On top of energy-efficient pump operation, how does a frequency drive benefit your installation?

Question 4 of 8
Intermediate

What may cause friction loss in the pipes?

Question 5 of 8
Intermediate

Why is it important to know the water drawdown?

Question 6 of 8
Intermediate

What is the most effective way to stay updated on your pump’s condition?

Question 7 of 8
Intermediate

In which areas is there a bigger risk of pumping corrosive groundwater?

Question 8 of 8
Intermediate

How does over- and under voltage, phase unbalance and phase loss impact the pump motor?

Question 8 of 8
Intermediate

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1: What can be done to the well if sand continues to enter a well after the well development has been carried out?
The well driller can try to run the pump at its maximum capacity in short periods of time over a couple of days
1: What can be done to the well if sand continues to enter a well after the well development has been carried out?
The well driller can replace the casing with a new one with smaller slots
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1: What can be done to the well if sand continues to enter a well after the well development has been carried out?
An additional filter can be installed inside the casing
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2: What should the minimum flow past the motor be to ensure sufficient motor cooling?
0,5 m/s
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2: What should the minimum flow past the motor be to ensure sufficient motor cooling?
0,15 m/s
2: What should the minimum flow past the motor be to ensure sufficient motor cooling?
There are no specific requirements
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3: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
It comes with a built-in motor protection
3: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
It can reduce cavitation
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3: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
It cools the motor
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4: What may cause friction loss in the pipes?
Scaling
4: What may cause friction loss in the pipes?
Poor water quality
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4: What may cause friction loss in the pipes?
High water temperature
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5: Why is it important to know the water drawdown?
The more the drawdown increases during pump operation, the more pressure is required to lift the groundwater to the surface
5: Why is it important to know the water drawdown?
Increased drawdown leads to poor water quality
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5: Why is it important to know the water drawdown?
Steel casings may not be used if the drawdown is too big
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6: What is the most effective way to stay updated on your pump’s condition?
Manual inspection
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6: What is the most effective way to stay updated on your pump’s condition?
Remote online monitoring
6: What is the most effective way to stay updated on your pump’s condition?
Regular maintenance
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7: In which areas is there a bigger risk of pumping corrosive groundwater?
In forests with old trees
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7: In which areas is there a bigger risk of pumping corrosive groundwater?
In coastal areas
7: In which areas is there a bigger risk of pumping corrosive groundwater?
In elevations above 1000 m
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8: How does over- and under voltage, phase unbalance and phase loss impact the pump motor?
It increases speed and thereby the performance of the pump
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8: How does over- and under voltage, phase unbalance and phase loss impact the pump motor?
It raises the motor temperature, reducing the lifetime
8: How does over- and under voltage, phase unbalance and phase loss impact the pump motor?
It reduces flow and pressure
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