In addition to the mechanical fault issues mentioned, consider suction pressure. Blower load and motor current are are affected by both suction and discharge pressures. Check suction for blockage, such as air/intake filter or other upstream issues.
Walt
The word "installation" in the OP Title could have two meanings; final location or where the rotating equipment is moved into final location in plat/vessel. Ship machinery are typically installed for new construction or major repairs or at a dock with direct shore access. No experience with...
Suggest at least tack-welding the thick plate to bed/foundation. Leave the thin shims loose or install tapered pins (with top nuts) from machine feet into thick plate to reduce shifting shaft alignment.
Walt
Note that your sketcs shows the Vertical (d) dimension difference to be 50 mm. That is quite a difference for motor of same HP and Frame Size!
Thick plates, if machined flat, should not affect vibrations if soft-foot and shaft alignmnet are good. Allow 1 to 2 mm of height for thin SS shims to...
If bearing vibrations are normal in the horizontal and axial/thrust direction and only high in vertical direction,then possible causes are: excessive bearing clearance or resonant structure. The resonant structure hypothesis can be verified by variable speed (run up) test and/or impact-response...
Resonant or natural frequency testing may be used.
https://www.modalshop.com/ndt
The challenge would be small part size to measure high natural frequencies. I suggest prototye testing of good and known-bad parts. If that works, then automatic or semi-automatic test stations can be configured...
With only 12 people, why not list the most common selection issues, then discuss and then ALL can vote. If there is a common choice, then do it. If not, then the manager can make the choice explain why, and then move on. My opinion of the pictured cubical is that it for telemarketers and not for...
When I was in High School the students that were not going to college had typing class, and the rest of use did not. Very frustrating getting through college (BSME) and a long engineering career without good typing skills! I made several efforts to learn to type, but I was unable to master the...
Considering: VFD, high load, and high frequency (no spectrum or identified frequencies)vibrations, then the "fault" could be EDM surface erosion in one of the bearings...
