How long did it take to replace the pump with a Grundfos SQ?
How many times higher than nominal speed does the motor current reach during the first milliseconds?
What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
What happens if the static water level is too low?
Why must the pump unit be installed below the dynamic water table?
Why is it important to protect the pump from over- and under voltage?
Test results
Q: How long did it take to replace the pump with a Grundfos SQ?
A: 30 minutes
Q: How long did it take to replace the pump with a Grundfos SQ?
A: 60 minutes
Q: How long did it take to replace the pump with a Grundfos SQ?
A: 90 minutes
Q: How many times higher than nominal speed does the motor current reach during the first milliseconds?
A: Four times higher
Q: How many times higher than nominal speed does the motor current reach during the first milliseconds?
A: Six times higher
Q: How many times higher than nominal speed does the motor current reach during the first milliseconds?
A: Seven times higher
Q: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
A: Between 100 V and 250 V
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
Q: What must the supply voltage lie between in order for the SQ/SQE pump to deliver a flow of water?
A: Between 230 V and 400 V
Q: What happens if the static water level is too low?
A: The pump overheats
Q: What happens if the static water level is too low?
A: The water level is brought down below the inlet of the pump
Q: What happens if the static water level is too low?
A: The motor shuts down
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 it important to protect the pump from over- and under voltage?
A: Because large variations in power supply will damage the motor over time.
Q: Why is it important to protect the pump from over- and under voltage?
A: To avoid burning the house fuses.
Q: Why is it important to protect the pump from over- and under voltage?
A: To minimise the power consumption.