11. Lubricant Specification
The informtion contained in this leaflet preset the recommendations of our shop regarding the caracteristics of lubricants suitable for use in the operation of the unit.
Quality
The oil shall be a refined mineral oil of highest quality and uniformity. It shall contain no grit, inorganic acid, alkali, soap asphaltum,pitch, resinous, or any other substance which will interface with the lubricating properties of the oil, or that will be detrimental to the oil or to the metals with which it will come in contact in service.
The oil shall be capable of preventing the formation of rust on steel parts bathed with oil, should small quantities of water enter the oil during service.
Flash Point
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175˚ C (350˚ F) min.
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Say bolt viscosity
|
|
Second at 38˚ C (100˚ F)
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230 ~ 360
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Second at 100˚ C (210˚ F)
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46 ~ 60
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Carbon Residue
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1.00% max.
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Neutralization No.
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0.10 max
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Sulphur Content
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|
Corrosion Resistance
Test
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Shall pass
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Corrosion in Lubricating System.
In the operation of a system turbine it is impossible entirely to exclude moisture from lubrication system.
The presense of very small quantities of moisture in a system using unsuitable oil has been found to be responsible for serious corrosion, which interferes with governor system operation and jeopardizes bearings.
Inhabited Oils : Purification System
It is known that some types of oil purification system using fuller's earth or filters materials may removw some corrosion or oxidation inhabitors from the oils.
It is recommended that before such system are applied, the oil supplier be consulted on this point.
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