Excessive oil in the lines
by Al Kandziorski
Even with a large amount of different types of filters we are still seeing oil at our CMM's (coordinate measuring machines). To be honest we are getting a LOT of oil. We use a Rotary type compressor ( Ingersoll Rand )due to the fact we were told this was a cleaner type of compressor. Bill says... Most industrial compressors have oil separators, devices that take most of the compressor lube oil out of the air stream. They don't however, take it all. If you are seeing an inordinate amount of oil, the separators in your compressor may be having a problem. This should be checked. Coalescent filters take out liquid oil. If you are still seeing oil at your machines, then it's condensing there from oil in aerosol form, and you need to step up your compressed air treatment. Check with Norgren about their line of compressed air filters that strip oil aerosols from the air stream. Add one of these downstream from the coalescent, and that should do the trick. Cheers, Bill
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