7 | Decommissioning
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Installation instructions sonnenBackup-Box
7 Decommissioning
NOTICE
Deep-discharge of the battery modules
Destruction of the battery modules!
Do not disconnect the storage system from the public grid for long periods
of time.
Never continue to operate battery modules which have been deep-dis-
charged.
7.1 Switching off the Backup-Box
To switch off the Backup-Box manually, the following procedure can be carried out. In or-
der to be able to work on the Backup-Box safely it must be disconnected from the power
supply (see next section).
1.
Disconnect the power supply to the storage system as described in the relevant
product documentation.
2. Wait at least five minutes until the internally stored energy inside the storage system
inverter has discharged.
7.2 Disconnecting the Backup-Box from the power supply
Before
working on
the
Backup-Box, it must be completely disconnected from the power
supply.
1.
Switch off the Backup-Box by disconnecting the power supply to the storage system
(as described in the relevant product documentation).
2. Switch off the grid voltage using the miniature circuit breaker for the Backup-Box.
3. Take steps to ensure that these switches cannot be switched on again.
4. Wait at least five minutes until the internally stored energy inside the storage system
inverter has discharged.
5. Carefully check that there is no voltage inside the Backup-Box.
