Maintenance
9.3 Corrective Maintenance
1MB..5/6 shaft height 71 ... 355
Operating Instructions, 07/2020, A5E41926185A
117
Explosion hazard due to improper maintenance
If repairs to the anti-condensation heating are not carried out correctly, e.g. if unauthorized
or untested spare parts are used, this can result in explosions during operation in a
potentially explosive gaseous atmosphere. This can result in death, serious injury, or
material damage.
• Repairing and mounting the anti-condensation heating and the subsequent routine
testing must always be undertaken by experts from the service center (Page 141),
because this work requires extensive specialist knowledge.
• Only authorized and tested spare parts may be used.
9.3.3 Rolling bearings
Refer to the rating plate or the catalog for the designations of the bearings being used.
Note
Bearing seals for explosion
-protected machines
For explosion-protected machines, only use the original replacement and repair parts.
Danger as a result of rotor falling out
If the motor is in a vertical position, the rotor can fall out while work is being performed on
the locating bearing. This can result in death, serious injury or damage.
• Support or unload the rotor when carrying out work with the machine in a vertical
position.
Explosion hazard due to overheating of the rolling bearings
If the rolling bearings are not regularly regreased, local overheating may be possible, and, as
a consequence, an explosion in an explosive atmosphere. This can result in death, serious
injury, or material damage.
• Regrease the rolling bearings regularly according to the lubrication plate.
Implement bearing temperature monitoring if not yet in existence.
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