This alignment check now became a precision shaft alignment as the vertical angularity of 2.7mils/1” is almost 4 times tolerance and the vertical offset (parallel) of 48.1 mils is 12 times tolerance. The mechanics started the Verti-ZontalTM Process by first completing the pre-alignment steps (soft foot, etc.) then correcting the vertical misalignment per the shim screen, consolidating the shim stacks while doing so. They then went “live” to correct the horizontal misalignment.
While performing the horizontal correction the coupling and feet values were changing. We activated the EVO’s Screen Filter which did “settle down” the live coupling and feet values somewhat though they were still changing slightly. The yellow arrows indicating the direction to move the motor were steady.
This was a first for me as I have activated the screen filter in the past which “steadied” the live values. I surmised the screen filter didn’t completely settle the live values, in this application, as the modular skid was not anchored, and the middle of the motor/pump base also is not supported. My thinking was the motor, with the feet loose, was moving differently (bouncy) than the components still bolted to the skid causing “odd” excessive movement.
That being said, the mechanics adjusted the motor horizontally to close to acceptable tolerances then tightened the hold down bolts. Due to the coupling influences from the original gross vertical misalignment we figured there would be a touch up needed to the vertical position and did not worry about getting the horizontal position in tolerance at this point.