CMS/User Guide - Filterteknik

Appendix Efluids which are cleaner than those stated will increase life. However, the diversityof hydraulic systems in terms of pressure, duty cycles, environments,lubrication required, contaminant types, etc, makes it almost impossible topredict the components service life over and above that which can be reasonablyexpected. Furthermore, without the benefits of significant researchmaterial and the existence of standard contaminant sensitivity tests, manufacturerswho publish recommendations that are cleaner than competitors maybe viewed as having a more sensitive product.Hence there may be a possible source of conflicting information when comparingcleanliness levels recommended from different sources.The table gives a selection of maximum contamination levels that are typicallyissued by component manufacturers. These relate to the use of thecorrect viscosity mineral fluid. An even cleaner level may be needed if theoperation is severe, such as high frequency fluctuations in loading, high temperatureor high failure risk.70 Recommendations