Operation Manual / TPS44-F.. - TPS61-F..Start-up 3Oil supply 3.1 Page 35© Copyright 2016 ABB. All rights reserved.September 2016HZTL2412_ENRevision FStart-upOil supply3.1A carefully designed and installed oil supply, which functions in all possi-ble operational conditions, is an important prerequisite for trouble-free tur-bocharger operation.The turbocharger is normally lubricated with oil from the engine oil circuit.If a separate lubricating system is used, then emergency lubrication is al-so to be provided. Heed the instructions of the engine builder when selecting the lubricat-ing oil and oil-change intervals.Oil filtrationCAUTIONDepending on the turbine specifications and bearings used, varyingamounts of contaminants have to be filtered out of the lubricating oil toavoid dangerous wear of the bearing parts.The standard oil filter specification for the turbocharger is 34 μm. Thismeans that contaminants larger than 0.034 mm must be filtered out of theoil with a separation efficiency > 99%. Fit an accessory filter if engine oil filter is not efficient enough. If the engine is started cold and the flow resistance rises to above 0.5bar due to deposits of dirt in the accessory filter, a bypass must openwhich ensures that oil flows to the turbocharger by circumventing thefilter. Check that oil filters are clean before commissioning.NOTICEAlso follow the enginebuilder's instructions regarding filter mesh andseparation efficiency.33.1