Well pump protection system

Details Well pump protection system Well pump protection system

1978-03-07

1979-12-25

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

Having timer or delay means

417 17, 417 25, 417 26, F04B 4902, F04B 4906

Patent

active

041803744

ABSTRACT:
Disclosed herein is a protection system for a well pump in which a normal pressure switch is provided in series between this switch and the submerged motor and pump with a low pressure switch which has connected in parallel thereto a timing device which can in turn transmit directions to the pump, motor, control and starter to assure that a pump is not allowed to continue to run when there is no water in the well thereby causing a burnout. Check valves and a bleeder line are carefully positioned in this series to assure that the reading given by the low pressure switch, the normal pressure switch are real readings and that the pump is not inadvertenantly allowed to run due to incorrect signals derived therefrom.

REFERENCES:
patent: 2990780 (1961-07-01), Kreuter
patent: 3148622 (1964-09-01), Le Van et al.
patent: 3963375 (1976-06-01), Curtis
patent: 4124332 (1978-11-01), Nishijyo

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