The roots blower will use lubricating oil during operation, so lubricating oil is the root cause of normal operation of the blower. However, after a period of use, the lubricating oil will have performance aging and leakage consumption, so it needs to be supplemented or replaced in time.
Time and method of gear oil replacement: the lubricating oil must be replaced once when a new machine is used for 200 hours. Step by step, remove the old oil in the oil tank, flush it with gasoline, and then add new oil. When adding new lubricating oil, foaming or oil spraying may occur. This is a normal phenomenon. When the machine works for half an hour, the temperature rises, and this phenomenon will disappear.
Check the oil level every day when the machine is shut down. It should not be too high or too low. If the oil level is too high, fuel injection will occur. If the oil level is too low, the gear will not be able to touch the oil. In normal operation, after a month's running in period, the lubricating oil needs to be replaced every 1200 hours. The shorter the replacement time, the better for the machine.
When adding lubricating oil, it is necessary to add lubricating oil when the Roots blower is stationary. After the blower is running, do not add lubricating oil. When the blower is running, we may see that the oil volume of lubricating oil has decreased. This is because the gear drives the lubricating oil, so the oil volume will decline, but it will not affect normal use. When filling lubricating oil, we observe it through the oil indicating hole. When the oil is filled to the middle red line or red dot of the oil indicating hole, do not add lubricating oil again. Too much oil will lead to oil leakage of the fan.
Principles for replacing lubricating oil of Roots blower:
The roots blower will use lubricating oil during operation, so lubricating oil is the root cause of normal operation of the blower. However, after a period of use, the lubricating oil will have performance aging and leakage consumption, so it needs to be supplemented or replaced in time.
1. Check whether the lubricating oil has oxidized and deteriorated. If it has oxidized and deteriorated, it can be distinguished from the appearance. At this time, the color of the lubricating oil becomes black or deepened, and a hard adhesive film will form on the surface.
2. Check whether the lubricating oil is mixed with too many hard particles. During the inspection, take a small amount of lubricating oil with your finger for twisting and pressing, which can be judged by feeling.
3. Different kinds of lubricating oil cannot be mixed, new oil and old oil cannot be mixed, so when replacing lubricating oil, the waste oil should be completely removed, and then filled with new oil.
4. The lubricating oil should be filled properly. If it is too little, it will cause insufficient lubrication. Over filling, excessive mixing of lubricating oil and sharp temperature rise will cause oil separation, decomposition and leakage. 
The identification of lubricating oil, no matter which method of oil change, is to ensure that the lubricating oil has its due performance. Therefore, the following simple methods can be used to identify the quality of lubricating oil.
1. The lubricating oil will be oxidized and deteriorated due to the influence of air and other media during use. In order to judge the degree of oxidation deterioration, the sediment sludge at the bottom of the oil tank can be taken and put between the index finger and the thumb to rub against each other. If there is more oil sludge but poor adhesion, it means that the oxidation of oil is not too serious, but it is not clean and needs to be filtered. If there is much gum and strong adhesion, it indicates that the lubricating oil has deteriorated seriously and cannot be used any more.
2. Mechanical impurities in lubricating oil, including foreign suspended substances or insoluble substances such as dust, sand and metal particles deposited in the oil, will damage the oil film and increase wear. When the impurity content reaches a certain concentration, the lubricating oil cannot be used any more. According to experience, if the color of the oil is still no obvious improvement after filtering after it turns black, it should be replaced.
3. Water will increase the corrosiveness of the oil and make the oil aging; It is easy to form bubbles and make the oil lose its lubricity. Therefore, the moisture content should be controlled. High quality lubricants should be free of moisture. In practical application, in the case of water cooling, due to the penetration of cooling water, the lubricating oil deteriorates and fails. In order to check whether there is water, clean and dry cotton yarn can be used without lubricating oil and ignited with fire. If there is water in the oil, there will be explosion or flash.
I believe that after reading the above, you will have a certain understanding of the principle of changing the lubricating oil of Roots blower, and I hope it will be helpful to you.
Text term label: Roots blower
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