Using this Bosch dishwasher drain filter set is easy. First, turn off your dishwasher and unplug it for safety. Then, open the dishwasher door and locate the old drain filter. Remove it carefully. Take out the new filter set from the package. Start by installing the inner coarse filter, followed by the middle microfilter, outer fine microfilter, and finally the main mesh filter. Make sure they fit snugly. Plug the dishwasher back in and turn it on to test. As for maintenance, it's a good idea to clean the filters regularly. You can do this by rinsing them under warm water to remove any debris. If you notice any signs of damage, such as cracks or tears, it's time to replace the filter. And always double - check the compatibility of the filter with your dishwasher model before buying.