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4.9 Deinstallation
WARNING
Risk of death by electrocution!
When working on the solar system, disconnect the inverter from the AC power
supply.
Turn the DC switch to off.
Make sure that the power supply cannot be unintentionally switched back on.
Danger of burns from arcing!
Do not interrupt the DC connection between the solar modules and between
the solar modules and the inverter while current is flowing.
CAUTION
The StecaGrid 9000 3ph weighs 42 kg.
The inverter must be deinstalled by people.
To deinstall the device, follow the installation instructions in the reverse order.
Proceed as follows:
1. Turn the DC switch to off.
. Turn the AC circuit breaker to off.
3. Disconnect all DC connectors.
4. Disconnect all AC connectors.
5. Loosen the lower fastening screws of the inverter.
6. Lift the inverter up and pull it forward to remove it from the support.
5 StecaGrid 9000 3ph operation
5.1 Operation and fault display via LED
After the device is switched on, the system starts with a series of test procedures
which take a few seconds. When the output of the solar modules is high enough,
the inverter will switch to 'active mode'.
The front of the control unit is equipped with an LED which shows the operating
status of the inverter.
The following operating statuses are displayed on the LED:
LED status
System status
Explanation, cross-references
Green
Active mode – normal operation
The system is running in normal operation
mode and feeds the grid.
Off
Off
There is no input voltage (nighttime opera-
tion) or no mains voltage.
6 Troubleshooting
6.1 Maintenance
Due to its design, the StecaGrid 9000 3ph is maintenance-free.
The cooling system is dimensioned in such a way that the inverter is optimally
protected from overheating over its entire lifetime. The fans are temperature-
controlled, running only when the system output is raised. The fan speed thus
depends on output.
If an inverter is installed in a dusty environment, the inverter will quickly become
dirty as a result of the air current through the cooling fins.
If this cooling element becomes dirty, heat dissipation will be impaired and this will
cause the output restriction at lower ambient temperatures than the stated 50 °C to be
reached more quickly and thereby to unnecessarily decrease electricity generation.
It is recommended that the amount of dirt on the cooling element be checked
regularly and that the fan grills and the fan channel be cleaned as needed. Make
sure that no objects cover the ventilation paths. If faults occur and you must ex-
change the fans, please contact your installer.
The inverter casing can be cleaned with a damp cloth. Do not use any cleaning
agents that can damage the lacquered metal casing.
EN
