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Auto-klean filters, Coalescing action filters & Streamline lubricating oil filters for marine use

Auto-klean filter

This filter can be cleaned while in operation. The filter is cleaned by rotating the centre square spindle which rotates the disc stack and the stationary cleaning blades scrape off filtered solids which settle to the bottom of the sludge well of the filter.

Periodically, the flow of oil is disrupted and the sludge well is cleaned out. To facilitate this, the filters are generally fitted in pairs. The size of particle an auto-klean filter can filter out is in order of 75 microns, but a more recent type can filter out down to 25 microns. Pressure gauges are fitted to auto-klean filters before and after the filter to determine the state of the filter, ie dirty or not.

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Sketch of an auto klean filter

Streamline lubricating oil filter

Fig: Streamline lubricating oil filter

Coalescing action filters

Lubricating oil coalescer filter

1. Lubrication Schedule and Orders
The lubrication system of an engine provides a supply of lubricating oil to the various moving parts in the engine. Its main function is to enable the formation of a film of oil between the moving parts, which reduces friction and wear. The lubricating oil is also used as a cleaner and in some engines as a coolant.....


2. Function of Lubricating oil filters
Lubricating oil filters can be found both on the suction and discharge sides of the lubricating oil pump dependent on the installation and type of engine or engines. Their maintenance is absolutely critical to the life expectancy of the crankshaft and its bearings, which depends entirely on an uninterrupted supply of clean and correctly filtered oil.....


3. Lubricating oil treatment
lubricating oils require treatment before passing to the engine. This will involve storage and heating to allow separation of water present, coarse and fine filtering to remove solid particles and also centrifuging......


4. Lubricating oil centrifuging
Lubricating oil in its passage through a diesel engine will become contaminated by wear particles, combustion products and water. The centrifuge, arranged as a purifier, is used to continuously remove these impurities....


5. Cylinder lubrication & maintaining sump level
The sump level is to be according to manufacturers/shipbuilders instructions . The ‘Sump Quantity’ is always maintained at the same safe operating level and is given in litres. It is essential that the figures are mathematically steady and correct from month-to-month, taking into account consumption, losses and refills and reported .....