compressor using too much oil

Question Title: compressor using too much oil
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Answers: 1

I work for a Deere dealership and we just picked up the Atlas Copco line.

I was brought a XRVS476 with the complaint that the compressor was using too much oil. I noticed that oil was being discharged from air outlet and used my good friend Google to find your very useful page.

After doing some reading I think I've narrowed the problem to oil separator or scavenge line.

My question is where are these components located and how do I service them, being as we don't have any tech manuals or programs to go by?

Thanks

Answers & Replies

Cas

9 years ago

Welcome to my website :)

The separator and scavenge line/pipe is located in the air receiver, inside your air compressor.

The separator separates the oil from the compressed air. Separated oil will collect at the bottom of the separator.

The scavenge line/pipe will suck up this oil.

What to check:

open the air receiver.
remove the separator filter. And see if it is still ok (might be hard if this is your first time). It it is not ok, we call it 'saturated'. Check if it is saturated with oil. If it is, replace it with a new one.

You can also check the separator pressure difference when the compressor is running (loaded). You can see it on the control panel.

Check the scavenge line. Blow through it with your mouth. It should be open.

Also important: make sure the customer knows how to properly stop this machine. If you just stop it by pressing the emergency button, you will get a lot of oil carry over to the compressor air. I have seen this many, many times.

Here are some things for you to check out:

my pages about portable air compressors.
How oil injected rotary screw compressor work

Unfortunately, I don't have the manual or partlist for this machine. But if you ask Atlas Copco, they will surely send one to you.

Good luck. Let me know if you need more information.

Cas.