SMA SUNNY CENTRAL Maintenance manual - Manual (Page 10)

Maintaining the Sunny Central SMA Solar Technology AG
10 SCWAR-WEN094020 Maintenance Manual
3.2 Reading out Long-term Data and Error Memory
In order to ensure smooth plant operation, all plant components must be optimally matched to one
another. Deviations from the optimum operation can result in yield losses and thus in a reduction of
the plant's profitability.
Even though there are - depending on the plant communication - several features which issue a
warning to the plant operator in case of string failure or malfunctions of the inverter, a regular check
of the plant operation is necessary to recognize possible failures which have no alarm function.
Furthermore, plant operation might be improved by analyzing the plant data.
Depending on the plant size, the error memory of the central inverter as well as the long-term data of
the data logger must be analyzed at least once a month. Proceed as described in the user manual.
3.3 Cleaning the Power Electronics
The power electronics of the Sunny Central inverters is considerably well-protected and thus requires
almost no maintenance work. Only carry out a visual inspection and clean the circuit boards with a
soft brush or a vacuum cleaner with a soft top part if there are dust deposits. The cleaning equipment
must be anti-static and ESD-compliant. Do not use any hard or coarse brushes. Using pressurized air
is prohibited.
DANGER!
Death resulting from electric shock and burning upon touching the medium-
voltage grid's live components.
• Only work on the device when it is switched off and voltage-free.