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Halifax Fan – Engineered for your efficiency
Great feedback from our friends at Reliability Maintenance Solutions Ltd. Well put together and detailed case study below, thank you Suart Walker.
For those new to the channel, or the topic of Vibration Analysis, this Motion Amplification® video taken by Stuart Walker, shows how bad things can get when fans have severe vibration levels:
“Probably one of the worse fans i have ever measured with levels well over 100mm/sec!, should be around 1-2mm/sec. Just shows you how destructive high vibration levels can be, this Motion Amplification® footage is slowed down and is only 9 seconds in real-time. It shows the fan ramping up to to full speed 2980 RPM, note the NDE bearing becoming loose due to the severe vibration levels then gas seal failure.
This fan historically had been a problem for many years and was not relied on as a spare. Multiple companies tried to balance it and really struggled to get the levels down. We were asked to have a look at it and started with a runup using an Emerson’s Automation Technologies & Solutions AMS 2140 4 Channel Analyzer with transient, tach and RDI Technologies Inc. IRIS M™ Motion Amplification Camera.
The run up showed a couple of severe resonant excitations, this caused the NDE brg to be come loose then the gas seal failure as the fan was runup. When we carried out the bump tests after tightening everything back down, we found the structure was okay but the impellor had clear natural frequencies close to the operating speed, very surprised this fan had not disintegrated.
In the end a whole new fan was designed by Halifax Fan Group with the much preferred mono block arrangement for the bearing assembly, this is now running sweet at 2 mm/sec RMS and the site has a reliable spare for the process now.”
For more information about Motion Amplification® technology and Emerson’s Automation Technologies & Solutions AMS 2140, review the following links:
Iris M Camera: https://lnkd.in/dwaq93E
AMS 2140: https://lnkd.in/di7HCcs
VA Training: https://lnkd.in/dhCdEMe
MA/VA Videos: https://lnkd.in/dqzFehHq
