Vacuum Pumps The installation of a Variable Speed 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 range of energy savings can be from 30 to 80 percent. They may be adapted to blower or in some instances rotary vane type vacuum pumps. They work by changing the acceleration of the vacuum pump predicated on the reading from a pressure sensor that’s mounted on the vacuum collection near the receiver jar. The VSD is basically a dedicated pc with many adjustments therefore it could be possible to improve vacuum regulation over the typical pneumatic vacuum regulator that only includes a vacuum level adjustment. A VSD for a vacuum pump is usually Energy-Conserving Vacuum Pump china economical for a dairy that milks a total of 8 hours or more per day. Typically a VSD will not be a cost-effective option for little dairies due to less milking period and therefore shorter vacuum pump run times but there are several other options to save lots of energy costs.