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Hoot and flush5/28/2023 ![]() Generally, this procedure is employed when making a wholesale lubricant change during a conversion or displacing detergents or cleaners used during varnish mitigation. The steps include draining the system, refilling the reservoir to the minimum circulation level and using system pumps circulating in the normal flow path. This process is utilized when filling the system with a neutral fluid or new charge of oil. A third-party laboratory or field kits can be used to verify the particle count and determine completion. Do not use this process if the outage includes pipe breaks or opening of the bearing housings. This process is appropriate when performing annual maintenance that is limited in scope and time, i.e., reservoir cleaning, filter/lubricant changing (if same type), etc. Many maintenance personnel call this an oil flush due to achieving a cleanliness level below the normal or manufacturer's operating specifications. It typically involves external filtration circulating on the reservoir. This process can take place when the system is in production and running the system pumps in their normal flow pattern. This article breaks down oil flushing into four distinct categories and includes when each action is appropriate. Whether you are discussing oil flushing with contractors, equipment manufacturers or maintenance personnel, it is important to use the same terminology to prevent confusion. ![]() ![]() ![]() There are many ways to define what constitutes an oil flush. ![]()
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