Condensate return systems on low pressure steam applications where the condensate temperatures do not exceed 190ºF. As condensate flows into the receiver tank of the pump package from the steam system, the tank fills with water. The float on the switch assembly then rises, where it energizes the motor on the pump. Once started, the pump will continue to run until the water level drops below the bottom position of the float switch. There it will de-energize the motor to shut the pump off. This cycle repeats as condensate continues to fill the receiver tank.