Water Sensor standard on all units to show percent saturation. Removes 100% of free and over 90% of dissolved water, as well as 100% of free and over 90% of dissolved gases. Maintenance, operating, troubleshooting instructions are in HMI (touchscreen). Automatic mode enables user-defined system shutdowns. Use of a low maintenance, dry running claw vacuum pump helps to avoid any dangerous, chemically reactive by-products.