13bASIC SAFETY INSTRUCTIONS1.8 MaintenanceIn case of malfunction, unusual noises or smells inform a person in charge!DANGER Unauthorized exchange, repair and modifications!Unpredictable malfunctions!► The function of the drive converter is dependent on its parameteri-zation. Never replace without knowledge of the application.► Modification or repair is permitted only by KEB Automation KG au-thorized personnel.► Only use original manufacturer parts.► Infringement will annul the liability for resulting consequences.In case of failure, please contact the machine manufacturer. Only the machine man-ufacturer knows the parameterisation of the used drive converter and can provide anappropriate replacement or induce the maintenance.1.9 DisposalDrive converters of the KEB Automation KG are professional, electronic devices exclu-sively for further industrial processing (so-called B2B devices). Thus the marking doesnot occur with the symbol of the crossed-out wheeled bin, but by the word mark and thedate of manufacture.Unlike devices mainly used in private households, these devices may not be disposedat the collection centres of public sector disposal organisations. They must be disposedafter the end of use in accordance with national applicable law to environmentally cor-rect disposal of electrical and electronic equipment.Drive converters with safety function (see 2.2) are limited to a service life of 20 years.Then the devices must be replaced.