Start-up
7.2 Switching on
1MB..5/6 shaft height 71 ... 355
90 Operating Instructions, 07/2020, A5E41926185A
5. In case of uneven running or abnormal noise, switch off the machine. As the machine runs
down, identify the cause.
– If the mechanical operation improves immediately after the machine is switched off,
then the cause is magnetic or electrical.
– If the mechanical running does not improve immediately after switching the machine
off, then the cause is mechanical.
- Imbalance of the electrical machine or the driven machine
- The machine set has not been adequately aligned
- The machine is being operated at the system resonance point. System = motor, base
frame, foundation, ...
Serious damage to the machine
If the vibration values in operation are not maintained in accordance with DIN ISO
10816-3, then the machine can be mechanically destroyed.
• During operation, observe the vibration values in accordance with
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