Question 1 of 6
Intermediate

Where is domestic groundwater extraction typically relevant?

Question 2 of 6
Intermediate

What happens if the static water level is too low?

Question 3 of 6
Intermediate

How does the integrated dry-running protection work?

Question 4 of 6
Intermediate

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

Question 5 of 6
Intermediate

Why is correct sizing of the submersible pump important?

Question 6 of 6
Intermediate

The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?

Question 6 of 6
Intermediate

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1: Where is domestic groundwater extraction typically relevant?
In big cities.
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1: Where is domestic groundwater extraction typically relevant?
In remote areas where it is too costly to extend the municipal water supply to just a few houses.
1: Where is domestic groundwater extraction typically relevant?
In smaller and medium sized towns.
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2: What happens if the static water level is too low?
The pump overheats
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2: What happens if the static water level is too low?
The water level is brought down below the inlet of the pump
2: What happens if the static water level is too low?
The motor shuts down
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3: How does the integrated dry-running protection work?
It automatically restarts 3 minutes after shut down.
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3: How does the integrated dry-running protection work?
It prevents sand from damaging the pump.
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3: How does the integrated dry-running protection work?
It automatically shuts down the pump if water shortage is detected.
4: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Four times higher
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4: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Six times higher
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4: How many times higher than nominal speed does the motor current reach during the first milliseconds?
Seven times higher
5: Why is correct sizing of the submersible pump important?
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.
5: Why is correct sizing of the submersible pump important?
Because too small a pump will pump the well dry.
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5: Why is correct sizing of the submersible pump important?
Because too big a pump will ruin the taps due to too high pressure.
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6: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In wells with water temperature up to 60° C.
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6: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In installations that require constant pressure.
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6: The 3” SQ pump is obviously ideal for new boreholes but where can it also be used?
In original 4” boreholes where sediments over the years have narrowed the hole.