SMA SUNNY CENTRAL Maintenance manual - Manual (Page 23)

SMA Solar Technology AG Maintaining the Sunny Central
Maintenance Manual SCWAR-WEN094020 23
3.9 Sunny Central 500HE / 560HE / 400HE-11 / 500HE-11 /
630HE-11
Depending on the model, the switch cabinet of the SC 500HE has three protective grids (A) or one
protective grid (A) of another type in the front of the inverter cabinet. The SC 500HE model with three
protective grids in the front also has three protective grids at the real panel. The switch cabinet of the
SC 560HE is delivered with only one protective grid (A).
The switch cabinets of the series "11" have the same protective grids as the Sunny Central 560HE.
The devices mostly require no maintenance work. Due to the airflow of the power units positioned
above one another, dirt of the bottom power unit may remain in the switch cabinet. Vacuum the
chamber behind the bottom power unit for cleaning through the ventilation shaft.