®Instruction ManualNivuMaster Ultrasonic SensorsPage 12 NivuMaster Ultrasonic Sensors - Rev. 06 as of 29.07.20113.3 Installation of Spare Parts and Parts subject to wear and tearWe herewith particularly emphasize that replacement parts or accessories,which are not supplied by us, are not certified by us, too. Hence, the installationand/or the use of such products may possibly be detrimental to the device’s abil-ity to work.Damages caused by using non-original parts and non-original accessories areleft at user’s risk.3.3.1 List of Spare Parts1. sensor complete2. counter nut3. holder bracket3.4 Turn-off procedureFor maintenance, cleaning and repairs (authorised staff personnel only) thedevice shall be disconnected from mains and shall be prevented from beingturned on again unintentionally.3.5 User’s ResponsibilitiesIn the EEA (European Economic Area) national implementation of the frame-work directive 89/391/EEC and corresponding individual directives, in particularthe directive 89/655/EEC concerning the minimum safety and health require-ments for the use of work equipment by workers at work, as amended, are to beobserved and adhered to.In Germany the Industrial Safety Ordinance must be observed.The customer must (where necessary) obtain any local operating permits re-quired and observe the provisions contained therein.In addition to this, he must observe local laws and regulations on- personnel safety (regulations on safety at work)- safety of work materials and tools (safety equipment and maintenance)- disposal of products (laws on wastes)- disposal of materials (laws on wastes)- cleaning (cleansing agents and disposal)- environmental protectionConnections:Before operating the device the user has to ensure, that the local regulations(e.g. for operation in channels) on installation and initial start-up are taken intoaccount, if this is both carried out by the user.