LEGRAND Megaline Rack Mode D'emploi Pour L'utilisateur page 52

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5. Specifications
5.10 Routine maintenance
5.10.1 Cleaning
Before cleaning, it is essential to verify the following:
- all appliances connected to the UPS have been switched off
- all the appliances have been disconnected from the UPS
- the UPS has been disconnected from the mains power supply
5.10.2 Cleaning the cabinet
- Clean with a soft dry cloth
5.10.3 Cleaning the air vents
- Clean the air vents regularly by vacuuming them or using a soft brush
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