External Fan; Fan Cowl; External Fan Made Of Plastic - Siemens SIMOTICS FD 1LL1 Operating Instructions Manual

Rotor can fall 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.
9.2.2

External fan

9.2.2.1

Fan cowl

To remove or replace the external fan, the fan cowl must be disassembled. The fan cowl is
attached to the bearing shield with screws.
Disassembly
1. Secure the fan cowl against falling before you start working.
2. Loosen the fixing screws that secure the fan cowl to the bearing shield.
3. Observe existing retaining components and retain them for the reassembly.
Assembly
Proceed in the reverse order to assemble the fan cowl.
1. Position the fan cowl and tighten the fixing screws.
2. Ensure that the retaining components are undamaged and correctly installed.
9.2.2.2

External fan made of plastic

External fans made of plastic feature a cast-on driver similar to a feather key. The external fan
is secured using a locking ring to prevent axial movement.
SIMOTICS FD 1LL1
Operating Instructions 04/2016
WARNING
Maintenance
9.2 Corrective Maintenance
125