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6.3
Corrective Maintenance
6.3.1
Changing the bearing
Special procedure
NOTICE
For 1FW4 motors without an external fan, we recommend that the bearings are replaced
after approx. 60,000 operating hours, however, at the latest after 10 years. For 1FW4
motors with external fans, the bearings of the external fans must be replaced after
approximately 40,000 operating hours.
Strong magnetic fields
The rotor may only be removed at the manufacturing plant or by authorized workshops!
[ID 822.01]
See also
SIEMENS Service Center (Page 23)
Insulated bearings (Page 45)
A5E01083943A AB
Siemens AG Operating Instructions 2.02 1FW4
WARNING
Maintenance
6.3 Corrective Maintenance
77
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