Keep guideway and bearing surfaces clean of debris and excessive dust. Avoid contaminations with oil, coolant or other fluids. If needed, clean porous media and guide surfaces with 60 psi (0.41MPa) air pressure applied. Never clean with the air pressure off! Clean using only 70% isopropanol (isopropyl alcohol). Do not clean bearings or guide surfaces with ketones. Clean by applying 70% Isopropanol to a clean, dry cloth and wiping guide surfaces or bearing surfaces. After cleaning allow the Isopropanol to evaporate completely. Also allow guide surfaces to dry completely before passing bearings over the cleansed areas.