1. Soft Foot Diagnosis &The Soft Foot Wizard

2. Detection vs. Correction The amount of Soft Foot detecteddoes not equateto the required Soft Foot correction! 3. Some Types of Soft Foot Rocking (Highest values diagonally opposed.) Angled (Bent foot; bowed baseplate, angled soleplate.) Squishy (Too many shims, dirt, etc.) Induced (External forces: Pipe strain.) 4. Some Types of Soft FootRocking Soft Foot (highest values diagonally opposed)Three types: Short foot rocking soft foot: Parallel airgap under foot with largest soft foot reading. Tapered airgap (inwards) under diagonally opposite foot. Even Rocking soft foot: Inward tapers under both diagonally opposite soft feet. High Foot rocking soft foot: Outward tapers under both diagonally opposite soft feet. Larger soft foot value on foot nearest the high foot. 5. Soft Foot Diagnosis The type of soft foot can usually be determined by comparingthe measured values. Different types of Soft Foot yield different combinations ofvalues. Diagnosis and correction is expedited by recognizing the typeof soft foot problem, then seeking appropriate additional datarequired to solve it. 6. Diagnostic ProcessNumber inside circle Number in parenthesesrepresents a laser softrepresents a shimmingfoot reading.correction to make. 20(Step Shim)2525312 00Numbers in the 88 corners of each foot610 represent feeler1616gauge value of theair gap measured.Arrow represents directionof taper of airgap, fromhighest to lowest. 7. Rocking Soft FootImagine this condition on your machine. The front right foot is short. If youtighten the anchor bolt, the foot will bend until it cant bend any more.Then, if you continue tightening the anchor bolt, youll either break the footoff, or distort the rest of the machine frame. If the foot does not break off... 8. Rocking Soft FootSuppose the short foot is now tight to the base. The frame is distorted andunder stress. How will that stress relieve itself as you loosen each of theanchor bolts in turn, always with the others tight? Obviously, the short footwill come up as fast and as much as you allow it to, if you loosen its bolt. 9. Rocking Soft FootOn the other hand, if the short foot is tight, the opposite corner (the backleft foot) will also come up if you let it. So the machine rocks diagonally.Now imagine for a moment what the air gaps under each of these feet willlook like, if you loosen these feet... 10. Rocking Soft Foot Laser system indicates Soft Foot values greaterthan 2 mils at diagonally opposite corners.15 1515141 15159122 12 1215 11. Short Foot Rocking Soft Foot Please view our QuickTime video on rocking soft foot in action... Available as a separate download from our Learning Center page. 12. Induced Soft Foot Laser tools will show soft foot values on two, three or even all four feet of the machine. The two highest values tend to be along the same side or the same end of the machine frame. The distribution pattern ofthe values does not matchany angled soft foot patterns. 13. Induced Soft Foot Laser tools will show soft foot values on two, three or even all four feet of the machine. The twoIf you suspect pipehighest values tend to be alongstrain, theOptalign Smart will let you check the same end of the same side or for that and quantify its impact the machine frame. on the shaft alignment, so youcan take this information to the pipe fitters as proof of theproblem... The distribution pattern ofthe values does not matchany angled soft foot patterns. 14. The Soft Foot Wizard 15. Laser Alignment SystemsRotalign Ultra is ideal for soft foot because: It has a high resolutionsensor for accurate detection. It will diagnose the problemand suggest a solution for it. 16. Diagnosis: Example with Laser 17. Example Diagnosis 18. Example Diagnosis: Rocking Soft Foot found 19. Diagnosing the Solution 20. Diagnosing the Solution 21. Diagnosis & Solution Finished 22. Diagnosing the Solution An Angled Soft Foot Problem 23. Diagnosing the Solution An Angled Soft Foot Problem, cont. 24. Conclusions Soft Foot diagnosis & correction is always a challenge. Consistently accurate Soft Foot diagnosis is possible. Rotalign Ultra makes this a breeze! 25. Thank you!