Abstract
The use of lubricating oil free from detrimental contaminants enhances reliable operation of prime-movers. Flushing oil may be of the same grade as the normal lube oil. Temporary fine mesh screens are installed to ensure successful oil flushing. Flushing oil flow must be turbulent. Circulation of flushing oil is continuous with stopping from time to time for inspection and cleaning of temporary strainers. Oil lines are pounded during oil flushing to initiate vibration and thermal shock, facilitating dislodge of debris, rust, weld beads, and other loose materials inside piping. Duration of oil flushing may range from 12h to as much as several days to reach the desired level of cleanliness. Clean oil conforms to the NAS Class 8 (ISO 4406 19/17/14) specification with moisture content of 100mgkg−1.
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