Vacuum Pumps The installation of a Variable Acceleration Drive (VSD), sometimes called a adjustable frequency drive, usually saves between 50 and 65% in electrical power costs with the same or better regulation of vacuum. The range of energy savings could be from 30 to 80 percent. They can be adapted to blower or in some cases rotary vane type vacuum pumps. They function by changing the rate of the vacuum pump Energy-Conserving Vacuum Pump predicated on the reading from a pressure sensor that’s mounted on the vacuum range close to the receiver energy conserving vacuum pump201909161511297784979jar. The VSD is actually a dedicated computer with many adjustments therefore it may be possible to improve vacuum regulation over the normal pneumatic vacuum regulator that just has a vacuum level adjustment. A VSD for vacuum pressure pump is usually economical for a dairy that milks a complete of 8 hours or more per day. Typically a VSD will never be an economical option for little dairies because of less milking period and therefore shorter vacuum pump operate times but there are several other choices to save energy costs.