Maintenance
SMA America, LLC
80
SB50US-80US-eng-IUS112633
Installation Guide
10 Maintenance
Regular maintenance ensures a long operating life and optimal efficiency of the entire PV plant.
10.1 Cleaning the Fans
The Sunny Boy is fitted with two fans on its underside.
The fan intakes and handle covers should be cleaned periodically with a vacuum cleaner. For more
thorough cleaning, completely remove the fans.
1. Disconnect the Sunny Boy on the AC and DC sides.
2. Wait 5 minutes until the residual voltage has been drained and the fans are no longer turning.
Cleaning the Ventilation Grid
3. Remove the ventilation grids.
– Press both latches on the right of the fan screen
to the right using a screwdriver and loosen
from the bracket.
– Carefully remove the ventilation grid.
4. Clean the ventilation grid with a soft brush, a paint brush, a cloth, or compressed air.
NOTICE
Potential damage to the fans due to compressed air.
• Do not use compressed air for cleaning.
• Use a soft brush or a cloth for cleaning.
• Always remove the fans for cleaning.