This is the same topic that is on the Vibration posts. I thought it was more appropriate to place it under Technology.
I was introduced to ME'Scope at a CSI Training Class on Advanced 2120 taught by Tony Dematteo.
I have no affiliation with either CSI or Vibrant Technology. I'm just a satisfied customer.
Vibrant has a free trial package:
http://www.vibetech.com/Downloads.htm

Scott Harper provided the data from a problem machine he is troubleshooting. Here is the phase data:

This message has been edited. Last edited by: Jon McFadden,

Here is the ME'Scope spreadsheet developed from the phase data:

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This animation has all information corrected:

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SHarper_Movie_1.Avi (940 Kb, 93 downloads)

To play the animations using Windows Media Player:
Select Play, Repeat and click on Continuous or
<ctrl>+T will toggle between the two modes.
<alt>+<enter> with toggle for full screen.

Motor is 1786 RPM, 1250 HP.

Here is a picture of the inboard motor foot provided by Scott Harper:

This message has been edited. Last edited by: Jon McFadden,

Scott sent the "after" readings. I have been too busy to do much with them, yet. I will post the new animation when I have a minute.

OK Scott, what was the modifications that were installed to reduce the vibration levels?

Walt
The problem had started after our annual outage.
FD Fan motor had been changed out. after start up we lost a bearing on the fan at night, no clearance between the coupling halfs of the drop out coupling was said to be the cause of the failure. At that time it was discovered the motor that was taken out had been modified and the bolt holes had been slotted, the new motor was not slotted. The mechanics faced the coupling to get some clearance to run. The high vibration was caused by not installing the drop out coupling properly. When the fan was taken down, the face of the coupling was not seated in the fit on the motor side, coupling correctly installed, alignment was found good. Vibration came back down.
Have a great day, Scott