Machinery Lubrication Technician Practice Test

The primary function of a demulsifier in lubrication systems is to separate water from oil. In many industrial settings, lubricants can become contaminated with water due to various factors, such as condensation, leaks, or other environmental conditions. This contamination can lead to the formation of emulsions, which are mixtures of oil and water that can adversely affect the performance of the lubricant.

Demulsifiers are specialized additives that help break these emulsions, allowing for the easy separation of water from the lubricating oil. By effectively removing water, demulsifiers help maintain the lubricating properties of the oil, reduce the risk of corrosion and oxidation, and improve the overall efficiency of the lubrication system. This function is crucial, as water in the lubrication system can lead to increased wear and tear on machinery, reduced lubrication effectiveness, and ultimately, equipment failure if not properly managed.