Interval: After each operation.
Clean the SK Segment holder and bottom metal housing and any surface that was in contact with aqua regia.
Make sure that the FAN holes are not blocked and verify if the exhaust works.
Check if the Metal shaft that turns the pressure screw in to the rotor segment is not damaged.
Always use safety glasses, gloves and lab coat. After working with aqua regia, all residues must be washed and dried.