Using the Jet 708724 filter is simple. First, turn off your JET AFS - 2000 unit. Then, open the filter compartment and remove the old filter. Place the new Jet 708724 filter in its place and close the compartment. When it comes to maintenance, since it's a washable electrostatic filter, you can gently wash it with water every few months. Make sure it's completely dry before reinstalling it. As for precautions, always ensure the unit is off before handling the filter to avoid any electrical hazards. Also, don't use harsh chemicals to clean the filter as it may damage the electrostatic properties.