Question 1 of 8
Intermediate

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

Question 2 of 8
Intermediate

By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?

Question 3 of 8
Intermediate

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

Question 4 of 8
Intermediate

What could be the consequences of using an undersized pump in a well?

Question 5 of 8
Intermediate

What may cause friction loss in the pipes?

Question 6 of 8
Intermediate

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

Question 7 of 8
Intermediate

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

Question 8 of 8
Intermediate

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

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
You can find the answer here >
2: By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?
The by-passed water is wasted and cannot be used again
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2: By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?
The motor temperature rises and increases the risk of motor burn-out
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2: By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?
Energy is wasted as the pump continues to run at full speed
3: What kind of riser pipe is most likely to keep itself free from scaling?
Plastic hoses
3: What kind of riser pipe is most likely to keep itself free from scaling?
Stainless steel pipes
3: What kind of riser pipe is most likely to keep itself free from scaling?
Flex hoses
4: What could be the consequences of using an undersized pump in a well?
The pump will give too high pressure
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4: What could be the consequences of using an undersized pump in a well?
The risk of cavitation is very high
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4: What could be the consequences of using an undersized pump in a well?
The pump may not be able to deliver the required capacity
5: What may cause friction loss in the pipes?
Scaling
5: What may cause friction loss in the pipes?
Poor water quality
5: What may cause friction loss in the pipes?
High water temperature
6: What is the most effective way to stay updated on your pump’s condition?
Manual inspection
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
7: 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
7: 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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7: 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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8: In which areas is there a bigger risk of pumping corrosive groundwater?
In forests with old trees
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8: In which areas is there a bigger risk of pumping corrosive groundwater?
In coastal areas
8: In which areas is there a bigger risk of pumping corrosive groundwater?
In elevations above 1000 m
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