Using this filter kit for your Volta T7 Bagless U7440 vacuum cleaner is easy. First, turn off and unplug the vacuum. Locate the filter compartment and open it. Take out the old filters and replace them with the new ones from this kit. Make sure they fit snugly. When using the vacuum, keep in mind that these filters are designed to trap dust and debris efficiently, but you should still avoid vacuuming large sharp objects that could damage the filters. For maintenance, check the filters regularly. If they look dirty, you can gently tap them to remove loose dust. When they become too dirty to clean, it's time to replace them with a new kit. This will ensure your vacuum cleaner continues to work at its best.