Roller-Contact Bearings; Removing Roller Bearing - Siemens SIMOTICS FD 1MQ1 Operating And Installation Instructions

Maintenance
9.2 Corrective Maintenance
Danger of explosion as a result of a fan impeller coming into contact with its surroundings
The fan impeller of a metallic external fan coming into contact with another component can
cause arcing and explosion. This can result in death, serious injury or material damage.
● Remove any dirt.
● Regularly and after any performed work check the distance between the fan impeller and
● Please contact the Service Center if you require any support when aligning the
See also
Service and Support (Page 171)
9.2.4

Roller-contact bearings

9.2.4.1

Removing roller bearing

Preparation
● Remove any grease feeders, shock pulse measurement equipment and possibly mounted
● Remove the coupling on the drive end or make the shaft extension freely accessible.
● At the NDE, proceed as follows depending on the machine type:
Note
For a schematic diagram of the respective component layout, see Section "Spare parts
(Page 145)".
136
WARNING
adjacent components, such as air inlet nozzle. Correct the alignment of the components,
if necessary. The gap between the air inlet nozzle and the fan impeller should be at least
2 mm around the complete circumference.
components.
instrumentation at the DE and NDE.
– First, remove the fan cowl or external fan cowl (Page 135).
– Remove the external fan.
SIMOTICS FD 1MQ1
Operating Instructions 01/2019