Test and monitoring system for a sump pump installation having a self-protecting valve assembly for admitting water to the sump container
View Patent ↗A self-protecting valve assembly for use in conjunction with a sump pump test and monitoring system having a test control module which generates a valve control signal for opening the valve to initiate a test cycle. The valve assembly includes an electrically-actuated valve which is responsive only to a valve-actuating signal and not to the valve control signal. A conversion circuit in the valve assembly converts the valve control signal to a valve actuating signal to actuate the valve. This protects the valve from receiving a false actuating signal in the event of a failure in the test control module.
1. In a test and monitoring system for a sump pump installation of the type having a sump container and an electrically-powered sump pump which operates in response to a rising liquid level in the container to pump liquid from the container, and wherein the system includes a test control module for generating a valve control signal for initiating a test of the pump and for indicating a successful test in response to the pump pumping liquid from the container, a self-protecting valve assembly responsive to a control signal generated by the control module for admitting liquid from an external source to cause the pump to operate, comprising:
an electrically-actuated valve responsive to an actuating signal and non-responsive to the control signal, which, when actuated, establishes a fluid conduit between the external source and the pump container; and
a valve actuating circuit providing, upon the receipt and verification of the control signal generated by the test control module, an actuating signal to actuate the valve.
2. A self-protecting valve assembly as defined in claim 1 wherein the valve is responsive to a DC signal, the control signal is an AC signal and the valve actuating circuit upon receipt of the DC control signal generates a DC-actuating signal for application to the valve.
3. A self-protecting valve assembly as defined in claim 2 wherein the control signal is a square-wave signal and the valve actuating signal generated by the valve actuating circuit is a DC-actuating signal.
4. A self-protecting valve assembly as defined in claim it wherein the test control module includes a microprocessor for generating the valve control signal.