External Fan Made Of Metal - Siemens 1LA8 Operating Instructions Manual

Maintenance
9.2 Corrective Maintenance
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.
9.2.4

External fan made of metal

External metal fans have a keyway connection and are prevented from axially shifting using
a locking ring.
Disassembly
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.
Assembly
1. Remove the parallel key lock or insert it in the keyway.
2. Check the correct seating.
3. Then push the external fan
4. Insert the retaining ring
Air inlet nozzle
Two-pole machines are equipped with an air inlet nozzle
fan and air inlet nozzle must measure ≥ 2 mm evenly over the circumference.
108
①
is fixed on the shaft with a locking ring
Pliers according to DIN 5254 should preferably be used for this purpose.
Image 9-1 Ventilation (schematic diagram with axial fan)
purpose.
①
onto the shaft up to its stop. Use a suitable device for this
②
into the corresponding groove and check its fit.
②
. Remove the locking ring.
③
. The spacing between external
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2016