SMA SI 3324 Installation - Manual (Page 21)

SMA Technologie AG Safety Instructions
Installation Guide SI3324/4248-14:SE2406 Page 21
Before performing any maintenance work, installation work or an
EPROM change on the Sunny Island 3324/4248, you must make
absolutely sure that all inverters built in or connected to the system
are completely isolated from all voltage sources (batteries, (stand-
alone-)grid, generator). Ensure that the system cannot be
accidentally switched on again. Proceed in the order given below:
• Switch off all loads.
• Press and hold the "ESC" key until the "To STOP press ENTER"
message appears.
• Press "ENTER".
• Switch off the Sunny Island 3324/4248 using the DC circuit
breaker and also disconnect the inverter from the batteries (e.g.
using the optional SI-BattCase load break switch).
• Then disconnect the Sunny Island 3324/4248 from the grid/
generator.
• Make sure that the Sunny Island 3324/4248 has been
disconnected from all voltage sources.
• Wait at least three minutes to let the capacitors discharge and
allow the voltage inside the inverter to drop to a safe level.
• Open the housing cover and ensure the inverter is not under
voltage.
Use only rechargeable lead acid batteries. The use of other types
of battery can lead to personal injury and material damage.
The Sunny Island 3324/4248 can start up automatically. When
working on the stand-alone grid, ensure that ALL sources of AC
and DC power in the system have been switched off (see above).
When touching the inverter, please note that some housing
components of the Sunny Island 3324/4248 heat up during
operation. Temperatures may exceed 60°C. This represents a risk
of burns.