Avoidance Of Damage To Rolling Bearings During Stoppages; Decommissioning The Machine - Siemens SIMOTICS XP 1MB155 Operating Instructions Manual

Explosion hazard
If the anti-condensation heating is switched on directly after the machine is switched off, the
temperature class or the maximum surface temperature of the machine can be exceeded.
In an explosive atmosphere, there is a risk of an explosion. This can result in death, serious
injury or material damage.
• Only switch on the anti-condensation heating after the motor has been switched off.
8.5.1

Avoidance of damage to rolling bearings during stoppages

Extended stoppages at the identical or almost identical resting position of the rotor in the
rolling bearings can result in damage, such as brinelling or corrosion.
● During stoppages, regularly start up the machine for a brief period once a month. As a
minimum, turn the rotor several times.
If you have uncoupled the machine from the driven machine and secured the rotor with a
rotor shipping brace, then remove this before turning the rotor over or starting up the
machine.
Make sure that the resting position of the rotor after the rotor has been turned over is
different from its previous position. Use the fitted key or the coupling halves as reference
markers.
● During recommissioning, refer to the information in Chapter "Commissioning".
See also
Start-up (Page 81)
8.5.2

Decommissioning the machine

● Record the decommissioning steps. This log will be useful upon recommissioning.
● If the machine is going to be out of service for longer than six months, then take the
necessary measures for preservation and storage. Otherwise, the machine could be
damaged as a result of not being operated.
1MB155 / 1MB555
Operating Instructions, 03/2018, A5E41926185A
WARNING
Carefully comply with the data on the anti-condensation heating plate.
Operation
8.5 Stoppages
101