Due to the volume of calls we have received about SD75, this issue will answer several of the most frequently asked questions we have fielded. To begin, SubDrive75 is a variable speed system that provides constant water pressure and a host of other benefits to the homeowner. The entire system consists of a pump/motor assembly, the SubDrive75 controller, a pressure switch unique to SD75, and a pressure tank. The SD75 system uses a standard ¾ Hp pump mounted to a standard 1½ Hp Franklin motor (3-phase, 230V), allowing flexibility in component selection. Following are answers to some of the most frequently asked questions about this system. Continue reading →