SMA SB 3300 Installation - Manual (Page 50)

Maintenance and Cleaning SMA Solar Technology AG
50 SB33_38-IEN111851 Installation Guide
8.1.3 Cleaning the Ventilation Grids
There are ventilations grids on either side of the inverter. The inverter sucks air in from underneath
through the fan and blows it out again on the upper left side via the ventilation grids. For optimal heat
dissipation of the inverter, you only have to clean the left ventilation grid.
Procedure
1. Remove the left ventilation grid.
Insert your finger in the space between the
ventilation grid and the upper part of the enclosure
and remove the ventilation grid to the side.
2. Clean the ventilation grid with a soft brush, a paint
brush, or pressurized air.
3. Re-attach the ventilation grid to the inverter.
To help you identify the sides, the ventilation grids
are marked with "links/left" or "rechts/right" on the
inside.
☑ The ventilation grids are cleaned.
NOTICE!
Risk of damage to the inverter through intrusion of insects!
• The ventilation grids must not be removed permanently, because otherwise the
device is not protected against the entrance of insects.