Siemens 1PL618 Series

A5E00215731A AD
Siemens AG Operating Instructions 2.02 1PL618
47
Faults
6
6.1 Fault diagnosis table
Diagnosis table for mechanical and electrical faults
The tables below list general faults caused by mechanical and electrical influences.
Table 6-1 Diagnosis table for mechanical faults
Overview of mechanical faults
Mechanical fault characteristics
- rubbing/grinding noise
- significant temperature rise
- radial vibration
- axial vibration
Possible causes of faults Remedial measures
1)
↴
↴
↴
↴
- Rotating parts rubbing/grinding Determine cause and adjust parts x
- Air supply restricted,
possibly wrong direction of rotation of fan
Check air passages,
clean filter, replace fan if necessary
x
- Rotor not balanced Rebalance rotor x
- Rotor out of true, shaft bent Consult the manufacturer x
- Poor alignment Align motor unit,
check coupling
2)
x x
- Coupled motor not balanced Rebalance coupled motor x
- Shocks from coupled motor Check coupled motor x
- Imbalance originating from gearing Adjust/repair gearing x x
- Resonance with the foundation After consultation, reinforce foundations x x
- Changes in foundation Determine cause of changes,
eliminate if necessary; realign motor
x x
1)
As well as eliminating the cause of the fault (as described under "Remedial measures"), you must also rectify any
damage the motor may have suffered.
2)
Take into account possible changes due to a rise in temperature.