External Fan; Fan Cowl; External Fan Made Of Cast Steel; Figure 9-1 Ventilation (Schematic Diagram With Radial Fan) - Siemens SIMOTICS FD 1MM1 Series Operating And Installation Instructions

Maintenance
9.2 Corrective Maintenance
9.2.3

External fan

9.2.3.1

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.
9.2.3.2

External fan made of cast steel

External fans made of cast steel have a keyway connection and are prevented from axially
shifting using a locking ring.
Disassembling
1. The external fan
2. Use a suitable device to pull off the external fan.
3. Avoid using a hammer.
4. Secure the parallel key from falling out or remove it.
132
①
is fixed on the shaft with a locking ring
Pliers according to DIN 5254 should preferably be used for this purpose.
Figure 9-1 Ventilation (schematic diagram with radial fan)
②
. Remove the locking ring.
SIMOTICS FD 1MM1
Operating Instructions 02/2019