ZIGOR ZGR SOLAR STR 250 Manual De Operación página 89

ZGR SOLAR STR 250
6 MAINTENANCE
6.1 ZGR SOLAR STR 250 maintenance
DANGER
Risk of inverter damage or personal injury due to incorrect service!

Always keep in mind that the inverter is powered by dual sources: PV strings and utility grid.
Before any service work, observe the following procedure.

Disconnect the AC circuit breaker and then set the DC load-break switch of the inverter to OFF;

Wait at least 10 minutes for inner capacitors to discharge completely;

Verify that there is no voltage or current before pulling any connector.
WARNING
Keep non-related persons away!
A temporary warning sign or barrier must be posted to keep non-related persons away while performing
electrical connection and service work.
NOTICE
Restart the inverter only after removing the fault that impairs safety performance.
As the inverter contains no component parts that can be maintained, never arbitrarily replace any internal
components.
For any maintenance need, please contact ZIGOR. Otherwise, ZIGOR shall not be held liable for any damage
caused.
You can ask for an offer to ZIGOR in order to perform a basic maintenance of this equipment, so that it can
prolong the life of the inverter.
In order to guarantee the correct operation of the ZGR SOLAR STR 250, it is necessary to carry out a number of
maintenance tasks. These tasks enable resolving defects before breakdowns occur and to ensure correct
operation of active and passive safety devices.
The frequency of maintenance tasks is dependent upon the location and the atmospheric conditions. The air
quality (temperature, dust in suspension, etc.) has a great influence on the amount of maintenance work to be
done in order to maintain the functionalities of the equipment within an acceptable level of uncertainty. That is, for
example, if the air contains a great amount of dust in suspension, the maintenance work must be carried out more
frequently than the standard frequency indicated.
The recommended maintenance tasks in accordance with frequency are as follows:

Monthly:
Visual control of correct operation:
o
 LEDs indicating correct operation.
 Electrical values within margins.
No active event.

Control of the event history, in search of sporadic or repetitive failures.
o

6 monthly:
Check on the correct ventilation of the location.
o
Check the temperature and dust of the inverter.
o
Clean the inverter enclosure if necessary.
o
Cleaning of the equipment's air inlet filters.
o
Removal of foreign bodies both in the air inlet and outlet.
o
Visual verification of the status of connecting wires, rusting, damage to insulation, etc.
o
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