The Harvest Right Premier Vacuum Pump works great with any Harvest Right freeze dryer. This Premier 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 freeze dryer pump with Harvest Right Premier 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. The Premier Pump is especially not affected by warm, ambient conditions. When temperatures rise, it will pull a vacuum. The Premier Pump is just not affected by outside heat. It pulls the same deep vacuum even when it is in a warm environment. The Premier Pump's oil mist filter allows for no oil spray at all and it will last a long time.

• Industrial grade pump for freeze drying machines
• Filter the oil after 20 or 25 batches
• 110V power rating
• Premier pump uses 187 W
• Under hot conditions at ultimate vacuum pressure, this freeze dryer pump only pulls 1.7A
• Lightweight and easy to move around (only weighs 32 lb.)
• Substantially quieter than other freeze dryer pumps, 52 dB versus 64 dB; the industrial pump at 52 dB is about the same as a refrigerator