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Explain Sampling Procedure of lube oil?

• Draw samples from a connection that comes directly out of the main oil supply line to the engine.
• Always sample for the same point.
• Sample only when the oil is up to its operating temperature with the engine running.
• Depending upon the draw off point, sufficient amount of oil should be drained out of the line prior to drawing the sample.
• The sample should be filled into a chemically cleaned container after it is rinsed with sample oil and immediately closed.
• The container should be attached with a label as follows:

 Records for Sample

1. Date of sample drawn
2. Point of sample drawn
3. Type of oil
4. Type of machinery use
5. Temperature of sample drawn
6. The period of time since the last renewal of oils.

Batch purification

What is meant by batch purification?

1. Firstly take the immobilization permit 
2. The entire oil charge should be pumped by the purifier or by main circulation p/p into settling tank.
3. It should be allowed to settle for at least for 24 hours with heating about 60° C .
4. Water and sludge should be drained out periodically.
5. Cleaned the interior of the sump tank and carefully examined.
6. The oil should be passed through the purifier at its optimum efficiency and then pump back into the sump tank.
7. When sump tank empty, its interior should be cleaned and examined.

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