A oil expeller machine is easy to operate when used correctly. First, clean and dry the oil seeds, such as peanuts, sesame, mustard, or sunflower seeds, to remove dust and moisture. Switch on the machine and allow it to preheat if required. Gradually feed the seeds into the hopper, where the screw press crushes and presses them to extract the oil. The extracted oil flows through the oil outlet, while the leftover oil cake is discharged separately. After extraction, filter the oil to remove any impurities before storing it in a clean container. Once the process is complete, turn off the machine and clean all parts thoroughly to maintain performance and extend the machine's lifespan.