9.4.5 External fan
To remove the external fan or to replace it, remove the protective grille and other components
that are at the end of the fan cover.
Disassembling
1. Secure the components so that they cannot fall before you start any work.
2. Loosen the fixing screws that are used to attach the components and the fan cover.
3. Observe existing fixing components and keep them for the reassembly.
Assembly
Mount the components in the inverse sequence.
1. Position the components and tighten the fixing screws.
2. Ensure that the fixing components are undamaged and correctly installed.
9.4.6 Internal fan
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 111).
WARNING
Risk of explosion by a rubbing fan impeller
Sparking can occur if the fan impeller comes into contact with the air guidance nozzle. In an
explosive atmosphere, this can be ignited and cause an explosion. This can result in death,
serious injury or material damage.
● After any inspection and work carried out on the fan, check that the gap between the air
inlet nozzle and the fan impeller is radially approximately 2 mm around the complete
circumference.
Maintenance
9.4 Corrective Maintenance
SIMOTICS HV C 1NB1402-2AA84-4CA0-Z
98 Operating Instructions 06/2018
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