10 questions Intermediate

ECADEMY test

37 - Grundfos SQ/SQE

This course test contains 10 questions and can be retaken at any time.

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Question 3 of 10 Intermediate

What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?

Question 6 of 10 Intermediate

What is a key installer benefit of the voltage protection in SQ/SQE?

Question 8 of 10 Intermediate

Which submersible pump was replaced with a Grundfos SQ?

Question 9 of 10 Intermediate

Is the SQE pump able to provide constant pressure?

Question 10 of 10 Intermediate

In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?

Question 10 of 10 Intermediate

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Correct
Q: Where is domestic groundwater extraction typically relevant?
A: In remote areas where it is too costly to extend the municipal water supply to just a few houses.
Correct
Q: What is the benefit of a slow increase in speed?
A: It keeps the motor current low
Correct
Q: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
A: Between 150 V and 315 V
Correct
Q: Why must the pump unit be installed below the dynamic water table?
A: To avoid the risk of dry-running during operation.
Correct
Q: Why is it important to protect the pump from over- and under voltage?
A: Because large variations in power supply will damage the motor over time.
Correct
Q: What is a key installer benefit of the voltage protection in SQ/SQE?
A: Fewer service visits
Correct
Q: How does the integrated dry-running protection work?
A: It automatically shuts down the pump if water shortage is detected.
Correct
Q: Which submersible pump was replaced with a Grundfos SQ?
A: A 4” submersible pump 
Correct
Q: Is the SQE pump able to provide constant pressure?
A: Yes.
Correct
Q: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
A: It reduces the occurrence of water hammer in the pipes and minimises wear during start-up.