Your valves work mechanically in reaction to water pressure. To test your pump, open the Flood Control cover and run a hose into the small pit at the bottom where the pump is. The water should reach nearly the top of the pit and then activate the pump. If the water rises over the pit and into the round overflow, please call our office. In addition, we strongly recommend that the Flood Control be “Cleaned and Checked” annually by one of our Techs.