Question 1 of 6
Intermediate

Which submersible pump was replaced with a Grundfos SQ?

Question 2 of 6
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 3 of 6
Intermediate

How many times higher than nominal speed does the motor current reach during the first milliseconds?

Question 4 of 6
Intermediate

What is the most commonly used starting method for motors in 4” conventional pumps?

Question 5 of 6
Intermediate

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

Question 6 of 6
Intermediate

How does the integrated dry-running protection work?

Question 6 of 6
Intermediate

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1: Which submersible pump was replaced with a Grundfos SQ?
A 4” submersible pump 
1: Which submersible pump was replaced with a Grundfos SQ?
A 3” submersible pump
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1: Which submersible pump was replaced with a Grundfos SQ?
A 5” submersible pump 
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2: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
Soft start reduces over-pressure in your piping.
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2: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
It reduces the occurrence of water hammer in the pipes and minimises wear during start-up.
2: In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
Soft start prevents the motor from getting warm.
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3: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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3: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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3: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher
4: What is the most commonly used starting method for motors in 4” conventional pumps?
Direct on line
4: What is the most commonly used starting method for motors in 4” conventional pumps?
Star delta starters
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4: What is the most commonly used starting method for motors in 4” conventional pumps?
Auto transformer
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5: How long did it take to replace the pump with a Grundfos SQ?
30 minutes
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5: How long did it take to replace the pump with a Grundfos SQ?
60 minutes
5: How long did it take to replace the pump with a Grundfos SQ?
90 minutes
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6: How does the integrated dry-running protection work?
It automatically restarts 3 minutes after shut down.
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6: How does the integrated dry-running protection work?
It prevents sand from damaging the pump.
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6: How does the integrated dry-running protection work?
It automatically shuts down the pump if water shortage is detected.