Check the filter housing or the equipment manual to find the exact model number of the HYDAC filter element you need to replace. Acquire the correct replacement filter element. You can do this through HYDAC’s website, authorized distributors, or local suppliers. Before starting, ensure the system is shut down, depressurized, and isolated. Wear appropriate personal protective equipment (PPE).Open the filter housing according to the manufacturer’s instructions.Carefully take out the old filter element, noting its orientation and how it was installed.