Vibration from the Compressor Element

Thanks man,the element seize in the first place that warranted the overhauling and the overhauling was done by our third party.

Whats the third party saying about this? What was agreed with them in the contract?

Seems there is another perspective to it now.

How did you quality control the work from third party and how did they document their work?

Sometimes it's the littlest things.

Did you use a torque wrench, and follow the the exact procedure for torquing everything down?

I don't know if that's it, but I've been bitten by skipping seemingly insignificant details before. Now, it takes me a while to do something, because I triple check every step...but my success rate is much higher.

Vibration per se is not specifically covered, but this is most likely a component alignment problem.

Good Luck

What do your readouts tell you?

http://www.youtube.com/watch?v=GsSDTceRMXA

what is the implication of using just two compressors instead of three compressor,because the two is still doing the job

You are kidding, right?

Few things come to mind!

1. Backup Compressor

2. Continuus service

3. Redundancy

4. Process safety

But then there might be none such thing and a reduced compression rate would be the consequence of your proposal. What that means for you is unknown to us but I can get you some hard guesses if you wish . . .

Often the reason for the low cost of using a third party vendor is because there are many "shortcuts" taken to minimize expense/cost of the work that do not meet factory OEM specifications.

Since you have perfromed the repair twice:

The first thing that comes to mind is one of the most simple oversights which occurs often when the original retainer components such as lockwashers, conical washers, shims, bolts, and pins are not replaced with new components.

The initial machine alignment may be performed correctly however the retainers will fail allowing movement of the machine components resulting in misalignment which cause vibration, bearing heating, damage, and/or failure and the costly circle repeats until corrected.

My experience over the years has been that the lowest cost bidder is seldom the highest quality provider of services and you would be best seved at this point to have ATLAS COPCO Field Service perform a tear down and inspection of the unit.