How long did it take to replace the pump with a Grundfos SQ?
In addition to limiting the current draw from the mains during start-up of the pump, how does the soft-start functionality benefit operation?
Where is domestic groundwater extraction typically relevant?
What happens if the static water level is too low?
By how much does the supply voltage decrease before the motor contactor stops the pump?
What happens if the water level in the well drops below the inlet?
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: 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: Soft start reduces over-pressure in your piping.
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.
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: Soft start prevents the motor from getting warm.
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: 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: By how much does the supply voltage decrease before the motor contactor stops the pump?
A: More than 10 %
Q: By how much does the supply voltage decrease before the motor contactor stops the pump?
A: More than 15 %
Q: By how much does the supply voltage decrease before the motor contactor stops the pump?
A: More than 20 %
Q: What happens if the water level in the well drops below the inlet?
A: The motor power consumption drops
Q: What happens if the water level in the well drops below the inlet?
A: The motor power consumption stays the same
Q: What happens if the water level in the well drops below the inlet?
A: The motor power consumption increases