®Instruction ManualOCM Pro CFPage 160 OCM Pro CF - Rev. 07 as of 04.12.201212 Maintenance and CleaningDue to using the measurement system mostly in the waste water field whichmay be contaminated with hazardous germs, please ensure to take respectiveprecautions getting in contact with system, transmitter, cables and sensors.Maintenance extents as well as the according cycles depend on the followingfactors:- measurement principle of the level sensor- material wear- measurement medium and channel hydraulics- general regulations for the operator of this measurement plant- ambient conditionsTo ensure reliable, accurate and error-free function of the measurement system,we recommend annual inspections of the entire measurement system byNIVUS.12.1 TransmitterThe device type OCM Pro CF is designed to be virtually maintenance-free, freeof material wear and does not need to be calibrated. If required clean the trans-mitter enclosure if with a dry, lint-free cloth. For heavy pollution NIVUS recom-mends the use of commercial detergents or surface-active agents. Using abra-sive cleansing agents is not allowed.If you wish to clean the enclosure surface with a damp cloth please disconnectthe unit from mains before.12.2 SensorsYou can find a comprehensive description on sensor maintenance and cleaningin the "Technical Instructions of Correlation Sensors".No hard objects such as wire brushes, rods, scrapers or similar shall be used toclean the sensor. Cleaning by using a water jet is allowed up to a max. pressureof 4 bar (see Chapter 2.3) (e.g. use water hose). Never clean flow velocity sen-sors with pressure measurement cell (type V1D, V1U, V2D, V2U) by using awater jet!Using a high pressure cleaner may damage the sensor, lead to measurementfailures and thus is not allowed.
