Using your Robinhood RIE3CL9SS rangehood carbon filter set is easy. First, make sure your rangehood is turned off and unplugged for safety. Then, locate the filter slots in your rangehood. Slide the filters gently into the slots until they fit snugly. Once in place, you can turn on your rangehood and enjoy cleaner air in your kitchen. When it comes to maintenance, it's a good idea to check the filters regularly. If you notice a decrease in the rangehood's performance or a build - up of grease and dirt on the filters, it's time to replace them. These filters are disposable, so simply remove the old ones and insert new ones from the set. Remember to always keep your rangehood and filters clean to ensure optimal performance and a longer lifespan for your appliance.