The Harvest Right Premier Pump works great with most Harvest Right freeze dryers. This pump rarely needs to have the oil changed or filtered. The pump has a gas ballast feature that makes it so water does not stay in the oil. Because of this， the oil in the pump will be pristine and clear， even after 30 or more batches. You simply won't need to change the oil until you have run 20 or more batches. You should only replace the oil in this pump with Harvest Right Vacuum Pump oil， or Robinair Premium High Vacuum Pump Oil， or with JB Industries Black Gold Vacuum Pump Oil. Do not use Dairyland vacuum pump oil in the Premier pump.Under cold and hot conditions the Premier Pump will pull a deeper vacuum than the Standard Pump. Under cold conditions the difference is .05 Pascal for the Premier Pump and .08 Pascal for the Standard Pump. Whereas， under warm conditions the difference is much greater: .05 Pascal for the Premier Pump and 2.05 Pascal for the Standard Pump.The Premier Pump is substantially quieter than the Standard Pump， 52 decibels versus 64 decibels. The Industrial Pump at 52 decibels is about the same as a refrigerator. This pump comes with an oil mist filter. The Premier Pump uses less power than the Harvest Right Standard Pump (187 watts versus 218 watts). Under hot conditions at ultimate vacuum pressure the Standard Pump pulls 2.1 amps while the Premier Pump only pulls 1.7 amps.

Filter the oil after every 20 to 25 batches

Industrial grade vacuum pump

Gas ballast feature

For use in hot and cold conditions.

Only pulls 1.7 amps