Vacuum Pumps The installation of a Variable Acceleration Drive (VSD), sometimes called a variable frequency drive, usually saves between 50 and 65% in electricity costs with the same or better regulation of vacuum. The number of energy savings could be from 30 to 80 percent. They could be adapted to blower or in some cases rotary vane type vacuum pumps. They function by changing the swiftness of the vacuum pump based on the reading from a pressure sensor that’s mounted on the vacuum line near the receiver jar. The VSD is basically a dedicated computer with many adjustments therefore it may be possible to improve vacuum regulation over the typical 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 not be an economical option for little dairies because of less milking Energy-Conserving Vacuum Pump china period and therefore shorter vacuum pump operate times but there are several other choices to save lots of energy costs.