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Dear Shubrajit,

You should review the OEM recommendation about NAS Code, but I think that NAS = 11 is too high for this application.

In order to improve this NAS value, you can take different actions as:

1- Install a kidney-loop filtration skid. Of course, we would need the quantity of oil in the system.

2- Improve the efficiency of the filter elements of the systems. What is Beta Ratio of the filter elements?

3- Install breathers, or seals, in order to avoid the particle ingression.

If you send to me an email to schmidmend@hotmail.com with more data, I will be able to help you. I would need to know:

1- Type of oil, and quantity in the entire system.

2- Type of lubrication system (forced system?).

3- Type of filter element used (brand, beta ratio, P/N).

4- Pictures

Thanks a lot,
Cristian Schmid
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