Water is by far the most common liquid contamination in lubricating oils, hydraulic and special fluids. The same applies to the entry of air. Both phenomena in practice often are under- or sometimes over-estimated. Both lead to unnecessary maintenance actions and therefor cause increased costs. Applications, machinery and oil types react differently to an air or water entry. Because of this a general discussion of the topic is not helpful.

This recorded training series with three 1-hour modules systematically deals with application-specific causes and consequences of increased water or air entry and gives practical tips to detect and correct these as early as possible. The real case studies, that are integrated into each module, complete the training series and provide a high practical relevance.

You get access to three 1-hour video-trainings by and with Dipl.-Ing. Rüdiger Krethe and the presentations for download.

Module 1: Water in Oil: Normal phenomenon or „public enemy no. 1“

• Causes of humidity and water in oil
• Dissolved and free water
• Consequences of an increased water content
• Test methods
• Limits - application and oil type related
• Case studies

Module 2: Air in oil: No bubbles, no problem?

• Reasons for air entry in oil
• Dissolved and free air
• Consequences of an increased air entry
• Air release
• Test methods
• Interpretation
• Limits - application and oil type related
• Other gaseous contamination
• Case studies

Module 3: Foaming: A question of purity?

• Causes and magnitudes of influence on foaming characteristics
• (Surface) foaming and Oil-Air-dispersion
• Consequences of increased foam formation
• Test methods
• Interpretation
• Limits - application and oil type related
• Other gaseous contamination
• Case studies