What to do if the acid value of lubricating oil is high? Please help, fellow sailors! ! !
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This post was last edited by yxmqh on 2010-10-11 at 15:32. Several large compressors in our company use compressor oil of grade 150; after 3 months of use, tests on the oil have shown that its acid value has risen to 2.77 mgKOH/g, which exceeds the national standards
Provide your operating conditions and consult the lubricant manufacturer to find out what causes the high acid value of the compressor lubricant, whether oil replacement is necessary, and how to prevent such problems from occurring in the future.
It’s best not to add any other chemicals artificially; the important thing is to first determine why the acid value is so high, identify the cause, and then change the oil.
It’s unclear what damage a 20-fold increase in acid value can cause to the bearing shells of the equipment; there’s no need to ask the manufacturer, as the compressor is of the 4M40 type produced by Shenyang Blower. Originally, it was required to replace everything after oil leakage occurred. But the cost is too high; the company’s economic performance has been affected by current prices, and it is operating at a loss. So there’s nothing that can be done. Thank you all for your responses. Is there any way to carry out temporary treatment due to a high acid value?
Strange, hasn’t anyone else encountered such a thing? Changing the oil filter is also unpleasant; not changing it brings fear!
Agree with the third floor! ! ! It is not advisable to add any chemicals artificially until the cause is identified. If it cannot be stopped, it is recommended to change the oil as a temporary solution, and wait until maintenance time to conduct a thorough inspection and repair.
Check whether the oil or water leakage is caused by the packing at the piston rod; the oil that enters must be analyzed to ensure it is of satisfactory quality before it can be used, and if its concentration is more than 20 times the limit, it must be replaced!
From the perspective of protecting the equipment, it is necessary to change the oil. Additionally, there is also an issue of responsibility in terms of management; if the person in charge knows that there are problems with the equipment but fails to address them, report them, or take any action, then when serious problems arise, it won’t be just a minor loss related to changing the oil. It would be best if the equipment could be stopped to resolve the issue. If it’s truly not possible to stop production in order to do so, I believe it’s necessary to change the oil, while keeping records and monitoring the situation
Change it; you’ll find out then whether it’s the oil that’s expensive or the compressor (parts) that are costly. Moreover, it’s even more necessary to do the break-in period replacement.
This situation is likely caused by improper operation of the compressor; it is suspected that the medium leaking from the packing has entered the crankcase through the isolation chamber. Is the crankcase not protected with nitrogen? Are the high-point vent valve and the drain valve of the packing chamber open?