These kinds of causes result in a variety of troubles. Effect on each device Clogged auto-drain due to rust inside the pipes Corroded regulator Malfunction of valve and actuator caused by grease running Swelling of seal Rusted spool valve Water droplets formed Over processing due to increased humidity Air Preparation System Moisture Oil Carbon Tarry carbon Rust Solenoid valve ・ Malfunction by grease running ・ Stuck valve due to rust ・ Swollen rubber valve ・ Reduced service life ・ Swollen rubber valve ・ Reduced service life Regulator Pneumatic relay ・ Functional decline or failure ・ Reduced service life due to rust ・ Functional decline or failure Pneumatic instrumentation equipment ・ Reduced service life due to rust ・ Malfunction Piping Rust formed inside a pipe Air duster Air motor (Air driver/Air turbine) ・ Decreased revolutions ・ Reduced service life due to rust ・ Decreased revolutions or failure Air blow Water droplets formed Air spray (overall painting) Powder transfer ・ Powder adheres to damp wall surface. ・ Contaminated powder ・ Solidified powder Air micrometer Churning (Related to cement/food) Contamination Failure by seized component Contamination, churning failure Instrumentation error, failure Paint failure Contaminated powder Effect Stuck valve Stuck valve 1 drain drain drain drain drain Air leakage caused by seal damage Malfunction caused by clogged valve 0 % 5/1 10 20 30 40 50 HYGROMETER 60 70 80 90 100 Solidification or adhesion caused by moisture Churning matter Problems due to moisture and oil Water droplet Rust generation contamination of air blow Problem with rust and debris in pipes Solidification of powder Weather and season related problems Debris Air cylinder Rotary actuator ・ Malfunction by grease running ・ Stuck valve due to rust ・ Seized component ・ Reduced service life ・ Reduced service life ・ Poor sealing performance in piston rod ・ Reduced service life ・ Poor sealing performance in piston rod ・ Reduced service life ・ Stuck piston rod Contamination Contamination Malfunction