Will a leak cause the SubDrive to run the pump continuously?
The size of the leak and the capacity of the tank used will determine the run time of the pump. If we use the smallest tank possible, it would require a leak of approximately 1 cup per minute to drive the pump continuously. Larger diameter tanks would require a higher rate to cause continuous pumping. This, however, is not specific to the SubDrive alone. All variable speed drive systems would react similarly. Additionally, power consumption in this case would be very low due to the fact that the pump is turning at minimum revolutions. Also, since the SubDrive has a soft start (no in-rush current), the motor is not stressed during starting as much as it is in a conventional system.