Check the filter housing or the equipment manual for the specific INTERNORMEN filter element model number. Acquire the correct replacement filter element from INTERNORMEN’s website, authorized distributors, or local suppliers. Ensure the system is turned off, depressurized, and isolated. Wear appropriate personal protective equipment (PPE). Open the filter housing according to the manufacturer’s instructions. Carefully remove the old filter element, noting its orientation and installation method. Dispose of the used filter element in accordance with local regulations.