The OPS (Oil Purification System) works by filtering and removing contaminants such as water, solid particles, and dissolved gases from oil used in industrial machinery or transformers. The system typically involves heating the oil to lower its viscosity, followed by vacuum dehydration to extract moisture and dissolved gases. The oil is then passed through filters to remove solid impurities. Once purified, the oil is recirculated back into the equipment, ensuring it retains its dielectric and cooling properties.