Using this Volta cyclone cone filter is easy. First, make sure your appliance is turned off and unplugged. Then, open the cyclone dust catcher and place the cone assembly inside. It's a perfect fit for U4005S, U4015, and U4015F models. When emptying the dust, be careful not to throw out the filter by mistake. For maintenance, check the filter regularly. If it gets dirty, you can gently clean it with a soft brush. This will keep your appliance working well and ensure efficient dust collection.