Siemens SIMOTICS FD 1MM1 Series, Operating And Installation Instructions

Page: 134 / 178

WARNING
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
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.
● Please contact the Service Center if you require any support when aligning the
components.
See also
Service and Support (Page 167)
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
instrumentation at the DE and NDE.
● 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:
– First, remove the fan cowl (Page 132) or external fan cowl.
– Remove the external fan.
Note
For a schematic diagram of the respective component layout, see Section "Spare parts
(Page 143)".
Maintenance
9.2 Corrective Maintenance
SIMOTICS FD 1MM1
134
Operating Instructions 02/2019