The Compressor is protected by an Automatic Low Pressure Cut-off Switch that Shuts Off the Unit once the recovery is complete. This Auto Shut-off Feature eliminates the risk of compressor failure and reduces the user’s need to monitor the entire recovery process. The 69100 also includes an Oil Separator and Filter Dryer to cleanse the refrigerant during the recovery process. The Recovery System offers our newest color-coded gauges with Pressure Readings in PSI, BAR and MPA. The Stainless Steel Ball Valve designed Manifold controls the refrigerant flow smoothly and quickly with only a 1/4 turn.