External fan made of plastic
External fans made of plastic feature a cast-on driver similar to a parallel key. The external fan
is secured using a retaining ring to prevent axial movement.
1. The external fan
2. Pull off the external fan by hand.
1. Push the external fan
2. Insert the retaining ring
The internal fan is located on the rotor inside the machine. If the internal fan is defective or
must be replaced, please contact the Service Center (Page 137).
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2016
is fixed on the shaft with a retaining ring
Pliers according to DIN 5254 should preferably be used for this purpose.
Ventilation (schematic diagram with radial fan)
up to the end stop on the shaft extension.
into the corresponding groove and check its fit.
9.2 Corrective Maintenance
. Remove the retaining ring.