Question 1 of 4
Intermediate

Which of the following is not a common cause of insufficient water pressure in rainwater harvesting system pumps?

Question 2 of 4
Intermediate

Which Grundfos solutions come with dry run protection features?

Question 3 of 4
Intermediate

Why do some rainwater harvesting pumps make lots of noise?

Question 4 of 4
Intermediate

How much more energy can older, outdated pumps consume when compared to newer, energy efficeint models?

Question 4 of 4
Intermediate

Happy with your answers?

Submit your current answers and get the final test result.

Test results

Congratulations. You have passed the test and completed the 56 - Solving common pump issues in rainwater harvesting systems
Sorry. You did not pass the 56 - Solving common pump issues in rainwater harvesting systems test this time
Achieved badges:
How would you rate this course?
1: Which of the following is not a common cause of insufficient water pressure in rainwater harvesting system pumps?
Incorrect pipe dimensioning
You can find the answer here >
1: Which of the following is not a common cause of insufficient water pressure in rainwater harvesting system pumps?
Poor pump control
You can find the answer here >
1: Which of the following is not a common cause of insufficient water pressure in rainwater harvesting system pumps?
Oversized pump
2: Which Grundfos solutions come with dry run protection features?
SCALA1 and SCALA1 systems
You can find the answer here >
2: Which Grundfos solutions come with dry run protection features?
SCALA2 and SB/A pumps
You can find the answer here >
2: Which Grundfos solutions come with dry run protection features?
All of the above
3: Why do some rainwater harvesting pumps make lots of noise?
They are built to amplify sound
You can find the answer here >
3: Why do some rainwater harvesting pumps make lots of noise?
They lack soundproofing
You can find the answer here >
3: Why do some rainwater harvesting pumps make lots of noise?
Older, outdated technology can cause vibrations in the water piping system.
4: How much more energy can older, outdated pumps consume when compared to newer, energy efficeint models?
10-35%
You can find the answer here >
4: How much more energy can older, outdated pumps consume when compared to newer, energy efficeint models?
40-70%
4: How much more energy can older, outdated pumps consume when compared to newer, energy efficeint models?
75-95%
You can find the answer here >