The purpose of this article is to point out the key performance indicators (KPI’s) that can assist in maintaining the performance and troubleshooting of compressed air dryers.

Moisture is a known contaminant in a wide variety of applications and processes, but the presence of moisture in industrial use oil can be particularly detrimental. Affecting the quality and performance of the oil, water is known to increase viscosity and cavitation. It also degrades additives and film strength and presents the opportunity for biological contamination and corrosion.