My Gas Turbine have Air Inlet filter system,that have 4 layer (1 bug screen,2 Coalescer,3 Prefilter and 4 Fine filter)
Now I detect Diff. pressure of coalescer and bug screen is increase. And I clean both (washing by EM and water). And after clean Diff. pressure in this position is decrease (It's right),but diff. pressure of Prefilter and Fine filter is increase!(in attach table)I thing that is wrong!!!!
why Prefilter and Fine filter is increase ? or is right?