Using this Vax filter pack is easy. First, turn off your Vax vacuum cleaner and unplug it. Then, locate the filter compartment in your VZ - 702 or VZ702 model. Remove the old filter and replace it with the new foam and cage filter from this pack. Make sure it fits snugly. When it comes to maintenance, the foam filter is washable. You can take it out every few uses, rinse it under lukewarm water until the water runs clear, and let it dry completely before putting it back in. As for the cage filter, check it regularly for any signs of damage. If it gets too dirty and can't be cleaned, it might be time to replace it. Always remember to turn off and unplug your vacuum before doing any filter work to stay safe.