Page 167 - Rotating Machinery Pratical Solutions to Unbalance and Misalignment

Advanced Machine Alignment

21. Observe the indicators as the shafts are rotated, to deter-
mine the direction they move.
22. Take and record readings at the 6 o’clock position.
23. Continue to rotate in the proper direction and verify the
12 o’clock readings.
24. Plot the readings on the graph.
25. Use a calculator to verify the required machine move-
ment.
26. Adjust the machine as required in the vertical plane.
27. Repeat steps 19 through 26 as required.
28. Place the indicators on the left side of the machine, and
zero the indicators.
29. Mark the left side of the machine.
30. Rotate the machine 180 degrees to the right side.
31. Observe the indicators as the machine is rotated.
32. Take and record the indicator readings.
33. Rotate the machine in the proper direction and verify
the left side zero.
34. Plot the readings on the graph.
35. Verify machine movements with the calculator method.
36. Use dial indicators or feeler gauges to measure machine
movement.
37. Use indicators on fixture if necessary, by setting both to
1/2 their readings and moving the machine until both
read zero.
38. Repeat steps 28 through 36 as required.
39. Verify both the vertical and horizontal alignments.
40. Record all soft feet corrections, all shims used, and any
offset for thermal growth.
41. Record the temperature of the equipment at the time of
alignment.
42. Assemble the coupling guard and other required parts
and operate the equipment until it is heat soaked.
43. Shut down equipment and lock and tag out.
44. Remove coupling guard and other necessary parts and
reinstall the fixtures in their original position, using the
marks on the shaft.