Siemens SIMOTICS TN N-compact 1LH8 - Mechanical Faults; Table 8-2 Mechanical Faults on Water-Cooled Machines

8.10.3 Mechanical faults
The following table shows the possible causes of and remedial measures for mechanical faults.
Table 8-2 Mechanical faults on water-cooled machines
↓ Grinding noise
↓ Overheating
↓ Radial vibrations
↓ Axial vibrations
Possible causes of faults Remedial measures
X Rotating parts are grinding Establish the cause and realign the parts.
X Reduced cooling Check the water flow.
Consult the manufacturing plant if necessary.
X Rotor not balanced Decouple the rotor and then rebalance it.
X Rotor out of true, shaft bent Please consult the manufacturer.
X X Poor alignment Align the machine set and check the coupling
①
.
X Coupled machine not balanced Rebalance the coupled machine.
X Shocks from coupled machine Investigate the coupled machine.
X X Fault originating from gearing Fix the gearing.
X X Resonance of the overall system comprising ma‐
chine and foundation
Reinforce the foundation after consultation with the
manufacturer.
X X Changes in foundation Determine the cause and rectify it. Realign the ma‐
chine.
①
Note any changes taking place during warm up
Operation
8.10 faults
SIMOTICS TN Series N-compact 1LH8
Operating Instructions 06/2017 89