10 questions Intermédiaire

Évaluation ECADEMY

37 - Grundfos SQ/SQE

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Question 2 sur 10 Intermédiaire

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

Question 3 sur 10 Intermédiaire

How long did it take to replace the pump with a Grundfos SQ?

Question 4 sur 10 Intermédiaire

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 5 sur 10 Intermédiaire

By how much does the supply voltage decrease before the motor contactor stops the pump?

Question 6 sur 10 Intermédiaire

Which submersible pump was replaced with a Grundfos SQ?

Question 9 sur 10 Intermédiaire

Is the SQE pump able to provide constant pressure?

Question 10 sur 10 Intermédiaire

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

Question 10 sur 10 Intermédiaire

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Correct
Q: How does the integrated dry-running protection work?
A: It automatically shuts down the pump if water shortage is detected.
Correct
Q: What is a key installer benefit of the voltage protection in SQ/SQE?
A: Fewer service visits
Correct
Q: How long did it take to replace the pump with a Grundfos SQ?
A: 60 minutes
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.
Correct
Q: By how much does the supply voltage decrease before the motor contactor stops the pump?
A: More than 10 %
Correct
Q: Which submersible pump was replaced with a Grundfos SQ?
A: A 4” submersible pump 
Correct
Q: What happens if the static water level is too low?
A: The water level is brought down below the inlet of the pump
Correct
Q: Why is correct sizing of the submersible pump important?
A: Because an undersized pump will not be able to deliver the required flow and pressure and an oversized pump reduces energy efficiency, which increases operational costs.
Correct
Q: Is the SQE pump able to provide constant pressure?
A: Yes.
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