Vacuum Pumps Installing a Variable Quickness Drive (VSD), sometimes called a adjustable 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 can be adapted to blower or in some Energy-Conserving Vacuum Pump instances 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 collection near the receiver jar. The VSD is actually a dedicated computer with many adjustments so it could be possible to improve vacuum regulation over the typical pneumatic vacuum regulator that only has a vacuum level adjustment. A VSD for vacuum pressure pump is usually cost-effective for a dairy that milks a total of 8 hours or more each day. Typically a VSD will not be a cost-effective option for small dairies because of less milking time and thus shorter vacuum pump run times but there are several other choices to save energy costs.