Siemens SIMOTICS XP 1MB155, Руководство по эксплуатации, Страница: 123 / 152

Maintenance
9.2 Corrective Maintenance
1MB155 / 1MB555
Operating Instructions, 03/2018, A5E41926185A
121
WARNING
Explosion hazard due to increased surface temperature
Components within the motor may be hotter than the maximum permissible surface
temperature for the enclosure. In an explosive atmosphere, dust can ignite and an
explosion occur. This can result in death, serious injury or material damage.
• Do not open the motor in an explosive and dusty atmosphere when it is still at normal
operating temperature.
•
Allow the machine to cool down before opening it.
WARNING
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.
9.2.3 Installing rolling bearings
● Extreme caution and attention to cleanliness are vital when installing rolling bearings.
Observe the correct assembly sequence of the components.
● Attach all components with the specified tightening torques (Page 143).
Note
For further information about mounting the rolling bearing, please refer to the catalog or
the information provided by the rolling bearing manufacturer.
Procedure
1. Replace the damaged components.
2. Remove any dirt from the components. Remove any grease and the remains of sealant or
liquid threadlocker.