Vacuum Pumps Installing a Variable Acceleration Drive (VSD), sometimes called a variable frequency drive, usually saves between 50 and 65% in electrical power 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 instances rotary vane type vacuum pumps. They function by changing the acceleration of the vacuum pump based on the reading from a pressure sensor that’s mounted on the vacuum line close to the receiver jar. The VSD is basically a dedicated pc with many Energy-Conserving Vacuum Pump china adjustments so it might be possible to improve vacuum regulation over the normal pneumatic vacuum regulator that just includes a vacuum level adjustment. A VSD for a vacuum pump is usually cost-effective for a dairy that milks a total of 8 hours or even more per day. Typically a VSD will not be an economical option for small dairies because of less milking period and thus shorter vacuum pump run times but there are some other choices to save lots of energy costs.