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Figure 33. Operational state of the inverter
22
Solargen solar PV
Operation
Earth Fault
Failure
6. MAINTENANCE MANUAL
6.1.
General information
This document outlines all the relevant parameters for the correct functio-
ning of the PV system. Additionally, the document includes maintenance
instructions for the correct performance of the PV system.
Pay close attention to the indications contained in this manual.
The maintenance of the PV systems must be always undertaken by a
competent person or persons.
Pay attention to standards & regulations in force in order to prevent injury
to persons or damage to equipment.
The maintenance of a PV installation is mostly preventive than corrective.
Maintenance should be carried out on an annual basis.
6.2.
PV generator
The PV modules should be visually inspected for any damage and then
washed with a soap & water solution on an annual basis.
Any mounting rails & brackets should be checked for tightness & adjus-
ted accordingly.
Maintenance must be undertaken using appropriate health & safety pre-
cautions.
6.3.
Inverter
In order to assure optimal performance, it should be checked regularly
with different levels of solar irradiation to ensure optimisation of the sys-
tem.
Cleaning procedures on the inverter is only necessary if the heat dissi-
pation is degraded due to dirt on the loops cover (arrowheads fan), fans,
heat sinks, or the space between the inverter and the wall. The dirt should
be carefully removed with a soft brush.
If the status LEDs or display is not visible due to the dirt, clean with a
damp cloth. Do not use solvents, abrasives or caustic substances.
The maintenance of the inverter must be conducted according to the pro-
cedures described in the inverter's manual.
6.3.1.
Safety Warnings
The opening of the inverter and
•
Electric installation
•
Repair
•
Any works carried out on the inverter should only be performed by a
competent person. Even without external voltage, high voltages can
be produced inside the inverter.
These high voltages can cause severe injury and death
The temperature in some parts of the inverter's case – especially the tem-
perature of the heat sinks – can achieve, even during normal operation,
values above 60º C. There is burning risk by touching hot components.
6.3.2.
Inverter operation conditions
The operational conditions are indicated by LEDs on the front part of the
inverter, and by the built in display.
For the LEDs to indicate an operational condition, the inverter must be
connected on the DC side. There should be a minimum solar radiation to
feed the inverter with the necessary voltage.
The homeowner should ensure that the LED is illuminated, if possible du-
ring different solar radiation conditions, especially in the first year of after
installing the system. This way, it is possible to detect sizing or installation
errors and ensure the proper operation of the PV system.
When alarm signs are detected in the inverter, the equipment manual
should be consulted in order to understand the possible issue and to help
identify the solution.
(Figure 33)
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