DOES THE TRAINING OF VARNUH (DEGRADATION PRODUCTS AND FREE RADICALS LIKELY TO CAUSE PROBLEMS SUCH AS L? INCREASE OF WEAR, WITH POTENTIAL MALFUNCTIONS AND UNSCHEDULED CLOSURES), IN LUBRICATED SYSTEMS? A VERY WIDESPREAD PROBLEM IN A NUMBER OF INDUSTRIAL AREAS. DO THE REMOVAL OF THESE INSOLUBLE MATTER (IF ANY) REQUIRES SPECIAL FILTERING TECHNIQUES, WHEREAS IN SOME CASES (ADVANCED STAGE)? FORCED TO COMPLETE REPLACEMENT OF THE OIL, WITH A FURTHER THOROUGH CLEANING OF THE CIRCUIT, IN ORDER TO REMOVE THE SEDIMENTS PRESENT. TO GIVE AN IDEA OF THE COSTS THAT CAN BE SAVED WITH A PRIOR ASSESSMENT OF THE PRESENCE OF ARNUH, CONSIDER THAT IN AN INSTALLATION FOR THE CURRENT GENERATION A CHARGE OF OIL HAS A COST OF AROUND EUR 150, A RESTORATION OF A TURBINE COSTS ABOUT EUR 1 MILLION, WHILE HIS REPLACEMENT COSTS UP TO EUR 10 MILLION? WITHOUT TAKING INTO ACCOUNT THE ABSENCE OF PRODUCTION,