Energy-Conserving Vacuum Pump china Vacuum Pumps Installing a Variable Acceleration 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 range of energy savings could be from 30 to 80 percent. They may be adapted to blower or in some cases rotary vane type vacuum pumps. They function by changing the quickness 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 basically a dedicated computer with 
many adjustments so it may be possible to improve vacuum regulation over the normal pneumatic vacuum regulator that only has a vacuum level adjustment. A VSD for vacuum pressure pump is usually economical 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 little dairies because of less milking time and therefore shorter vacuum pump operate times but there are some other choices to save lots of energy costs.
