Siemens SIMOTICS XP 1LA5 Compact Operating Instructions page 60

Operation
Table 8-2 Mechanical effects
Mechanical fault characteristics
↓ Grinding noise
↓ Overheating
↓ Radial vibrations
↓ Axial vibrations
Possible causes of faults
X Rotating parts are grinding
X Reduced air supply, fan possibly
rotating in the wrong direction
X Rotor not balanced.
X Rotor out of true, shaft bent
X X Poor alignment
X Coupled machine not balanced
X Surges from coupled machine
X X Imbalance originating from gearing
X X Resonance in the overall system
(comprising machine and founda-
tion)
X X Changes in foundation
1) As well as eliminating the cause of the fault (as described under "Remedial
measures"), you must also rectify any damage the machine may have suffered.
2) Note any changes that take place while the temperature is rising.
132
Remedial measures
Determine cause and adjust parts
concerned
Check airways, clean machine
Check feather key declaration (H,
F, N)
Please consult the manufacturer.
Align machine set,
check coupling.
2)
Re-balance coupled machine
Inspect coupled machine
Adjust/repair gearing
Reinforce foundation following
consultation
Determine cause of changes;
eliminate if necessary; realign
machine
Explosion-protected machines
56100000002002, 01/2016
1)