1
What kind of riser pipe is most likely to keep itself free from scaling?
2
Why is it a good idea to make a well where the groundwater level is as high as possible?
3
What may cause friction loss in the pipes?
4
On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
5
What could be the consequences of using an undersized pump in a well?
6
By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?
7
What should the minimum flow past the motor be to ensure sufficient motor cooling?
8
How is it possible to protect the motor against bad power supply?
Test results
01.
Q: What kind of riser pipe is most likely to keep itself free from scaling?
A: Plastic hoses
01.
Q: What kind of riser pipe is most likely to keep itself free from scaling?
A: Stainless steel pipes
01.
Q: What kind of riser pipe is most likely to keep itself free from scaling?
A: Flex hoses
02.
Q: Why is it a good idea to make a well where the groundwater level is as high as possible?
A: 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
02.
Q: Why is it a good idea to make a well where the groundwater level is as high as possible?
A: The shorter the distance is from the surface to the ground water, the better the water quality is
02.
Q: Why is it a good idea to make a well where the groundwater level is as high as possible?
A: A higher level means lower water temperatures and better motor cooling
03.
Q: What may cause friction loss in the pipes?
A: Scaling
03.
Q: What may cause friction loss in the pipes?
A: Poor water quality
03.
Q: What may cause friction loss in the pipes?
A: High water temperature
04.
Q: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
A: It comes with a built-in motor protection
04.
Q: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
A: It can reduce cavitation
04.
Q: On top of energy-efficient pump operation, how does a frequency drive benefit your installation?
A: It cools the motor
05.
Q: What could be the consequences of using an undersized pump in a well?
A: The pump will give too high pressure
05.
Q: What could be the consequences of using an undersized pump in a well?
A: The risk of cavitation is very high
05.
Q: What could be the consequences of using an undersized pump in a well?
A: The pump may not be able to deliver the required capacity
06.
Q: By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?
A: The by-passed water is wasted and cannot be used again
06.
Q: By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?
A: The motor temperature rises and increases the risk of motor burn-out
06.
Q: By-pass control is an efficient way of performance regulating a pump but what is the downside of the process?
A: Energy is wasted as the pump continues to run at full speed
07.
Q: What should the minimum flow past the motor be to ensure sufficient motor cooling?
A: 0,5 m/s
07.
Q: What should the minimum flow past the motor be to ensure sufficient motor cooling?
A: 0,15 m/s
07.
Q: What should the minimum flow past the motor be to ensure sufficient motor cooling?
A: There are no specific requirements
08.
Q: How is it possible to protect the motor against bad power supply?
A: By means of an electronic motor protection that senses all possible deviations
08.
Q: How is it possible to protect the motor against bad power supply?
A: By means of a UC filter
08.
Q: How is it possible to protect the motor against bad power supply?
A: By using a special water resistant cabling