Question 1 of 8
Intermediate

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

Question 2 of 8
Intermediate

What may cause friction loss in the pipes?

Question 3 of 8
Intermediate

What is well development?

Question 4 of 8
Intermediate

What kind of riser pipe is most likely to keep itself free from scaling?

Question 5 of 8
Intermediate

Why is it a good idea to make a well where the groundwater level is as high as possible?

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 should the minimum flow past the motor be to ensure sufficient motor cooling?
0,5 m/s
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1: What should the minimum flow past the motor be to ensure sufficient motor cooling?
0,15 m/s
1: What should the minimum flow past the motor be to ensure sufficient motor cooling?
There are no specific requirements
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2: What may cause friction loss in the pipes?
Scaling
2: What may cause friction loss in the pipes?
Poor water quality
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2: What may cause friction loss in the pipes?
High water temperature
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3: What is well development?
The drilling of a hole in the ground to find groundwater
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3: What is well development?
The installation of the well casing in the centre of the borehole
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3: What is well development?
A process that ensures that the well’s sand filter has been improved so the well produces clean, sand-free water
4: What kind of riser pipe is most likely to keep itself free from scaling?
Plastic hoses
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4: What kind of riser pipe is most likely to keep itself free from scaling?
Stainless steel pipes
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4: What kind of riser pipe is most likely to keep itself free from scaling?
Flex hoses
5: Why is it a good idea to make a well where the groundwater level is as high as possible?
The shorter the distance is to the water the less expensive it is to make the borehole and subsequently to pump the water to the surface
5: Why is it a good idea to make a well where the groundwater level is as high as possible?
The shorter the distance is from the surface to the ground water, the better the water quality is
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5: Why is it a good idea to make a well where the groundwater level is as high as possible?
A higher level means lower water temperatures and better motor cooling
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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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