176 Maintenance
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Cleaning the door air inlets
Follow the instructions of the manufacturer of the cabinet system.
Cleaning the door air inlets (IP20)
Use a vacuum cleaner and brush to clean the grating.
Cleaning the door air inlets (IP22 and IP42)
Check the dustiness of the air inlet meshes. If the dust cannot be removed by vacuum
cleaning from outside through the grating holes with a small nozzle, proceed as follows:
1. Stop the drive and do the steps in section
Electrical safety precautions (page 144)
before
you start the work.
2. Remove the fasteners at the top of the grating.
3. Lift the grating and pull it away from the door.
4. Vacuum clean or wash the grating on both sides.
5. Reinstall the grating in reverse order.