Using this Volta Hepa exhaust filter is easy. Just remove the old filter from your Volta Gemini U4502, Campus U4700, or the compatible models like Tornado and Electrolux. Then, place the new EF32 filter in its place. Make sure it fits snugly. As for maintenance, check the filter regularly. If it looks dirty or clogged, it's time to replace it. When handling the filter, be gentle to avoid damaging it. Keep it in a dry place when not in use. This will help your appliance work efficiently and last longer.