Problems with lubricating oil
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1. The lubricant in our multi-stage centrifuge often turns black； 2. We have a fan; the lubricating oil has been in use for half a year without any decrease in its level. An automatic oil filler is used. What’s strange is that there seems to be a lot of oil evaporating from the bearing housing, yet the oil level in the filler never drops. No oil has been added to either the upper or lower parts of the filler, and both vibration levels and temperature are normal.
1. If the lubricating oil in multi-stage centrifuges often turns black, it indicates wear；
1. If the lubricant often turns black, it indicates wear; a sample of the lubricant can be taken for analysis. 2. If the oil level in the oil cup remains unchanged even when there is oil leakage, it may be due to a blocked vent hole in the constant-level oil cup. This situation is very dangerous, as it can easily lead to a lack of oil in the bearing housing and cause the fan shaft to lock up.
Check what type of lubricant is being used, and whether it matches the manufacturer’s requirements； Judging from the symptoms, the grade of lubricant used is insufficient
An unchanged oil level in the oil cup may indicate a false reading; it is recommended to open the oil cup to check whether the actual oil level is correct
The last edit to this post was made by zhangya*ong on 2016-10-14 at 13:36. 1. Darkening of the lubricant may be caused by wear in the friction pairs or by contaminants entering the oil tank. It is recommended to analyze the mechanical impurities and other parameters of the oil; if these values are above the acceptable limits, it is necessary to inspect the equipment and decide whether to replace the lubricant based on the analysis results； 2. If the oil level in the constant-level oil reservoir remains stable at one level over an extended period of time, it is recommended that you check whether there are any blockages in the ventilation holes and connection pipes of this reservoir, which could be causing poor oil replenishment.