... simple operation with superior accuracy.itrecovers,recycles,evacuates,leak tests,and recharge refrigerant quicklyand accurately.Closed ... is fully automatic function lets you recover, vacuum,leak test, charge, and then walk away.The features ... and functions asfollow:Vacuum Leak TestAutomatic Refrigerant RefillAutomatic Air PurgeAutomatic Oil DrainRefrigerant ChargingRefrigerant ...