Which submersible pump was replaced with a Grundfos SQ?
What is the most commonly used starting method for motors in 4” conventional pumps?
Why must the pump unit be installed below the dynamic water table?
Why is correct sizing of the submersible pump important?
Where is domestic groundwater extraction typically relevant?
Which protection features does the SQE have?
Test results
Q: Which submersible pump was replaced with a Grundfos SQ?
A: A 4” submersible pump
Q: Which submersible pump was replaced with a Grundfos SQ?
A: A 3” submersible pump
Q: Which submersible pump was replaced with a Grundfos SQ?
A: A 5” submersible pump
Q: What is the most commonly used starting method for motors in 4” conventional pumps?
A: Direct on line
Q: What is the most commonly used starting method for motors in 4” conventional pumps?
A: Star delta starters
Q: What is the most commonly used starting method for motors in 4” conventional pumps?
A: Auto transformer
Q: Why must the pump unit be installed below the dynamic water table?
A: So you are sure to minimise your power bill.
Q: Why must the pump unit be installed below the dynamic water table?
A: To avoid the risk of dry-running during operation.
Q: Why must the pump unit be installed below the dynamic water table?
A: To maintain a stable pressure in the system.
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.
Q: Why is correct sizing of the submersible pump important?
A: Because too small a pump will pump the well dry.
Q: Why is correct sizing of the submersible pump important?
A: Because too big a pump will ruin the taps due to too high pressure.
Q: Where is domestic groundwater extraction typically relevant?
A: In big cities.
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.
Q: Where is domestic groundwater extraction typically relevant?
A: In smaller and medium sized towns.
Q: Which protection features does the SQE have?
A: Voltage handling, soft start, dry-running protection and overload protection.
Q: Which protection features does the SQE have?
A: Protection against the well running dry.
Q: Which protection features does the SQE have?
A: The SQE does not have any protection features.