Experimental research planning in existing production conditions with the aim of setting up a dust extraction system

The article lists the main reasons for reducing the dust extraction systems' efficiency. The general principle of experiment planning is described. The use of a mixed fractional factorial plan with four factors at two levels and with two factors at three levels of variation is justified when using the shutters available in the dust extraction system. The condition that there is no need to exclude the insignificant factors (from the point of view of technical experiments), is established.