Photovoltaic technology is reputed to be reliable and require little maintenance. However light maintenance operations must be conducted annually to prevent possible anomalies and to make sure the safety organs are in proper working order.

To control the flawless operation of the power plant, in the absence of a proven failure.

To reduce the component deterioration risk in the power plant.

To reduce the failure risk and loss due to the unavailability of the power plant.

To preserve the productivity of the power plant.

To maintain the power plant in a state that guarantees the safety of people and property.

During preventive maintenance operations we check the following points:

GenSun checks the state of cleanliness of the photovoltaic modules (at the end of this visit we propose to the client, if it is considered necessary, to clean the modules).

Visual check of the general state of the modules (or check that the modules are evenly distributed on the roof). This is done in the following manner: manual inspection to ensure there is no space between the modules and checking that the appropriate level of tightening is applied to the mounting clamps for each module.

Visual check of DC cabling and connections on the rooftop and along the cable trays. The service provider pays particular attention to the state of the cables sheaths where a possibility of risk from fretting wear or exposition to UV is possible.

Infrared thermo-graphic inspection (without dismantling) of 5% of the modules evenly distributed on the roof. If abnormal hot spots are detected, the modules are dismantled for diagnosis.

Thermo-graphic infrared check of all the modules.

Check of the photovoltaic modules with a specific analyzer. If an abnormal hot spot is detected, the modules are dismantled for diagnosis.

Punctual cleaning of irradiance sensors.

Check of the temperature sensors.
Visual check of possible rooftop leaks from inside the building. Ask occupants if they have noticed any leaks.

Visual check of visible fixing screws of the rooftop plating.

Visual check of gutters and drainage pipes for rain water and cleaning if necessary.
General visual check of their condition.

Check that the inverters are in working order using LEDS.

Check the absence of inverter defects (including minor alarms) using the data from the supervision system.

Clean the inverter air vents.

Infrared thermo graphic inspection of 100% of the inverters.
General visual check of the condition.

Check for water seepage, humidity and dirt.

Check of fuses.

Check of lightning arrestors.

Check the torque of the screw connections on the Main LV board and DC cabinets.

Visual inspection of AC cabling.

Infrared thermo graphic inspection with the cover open. Main LV board, and 100% of all the DC cabinets.

Production meter command and protection device (only for power plants<250kWp).

Reading of electrical values (production and consumption).

Inspection of circuit breaker and disconnector. Inspect circuit breaker settings.

Infrared thermo-graphic inspection of production meter command and protection device (without dismantling parts)
Verification of the presence of record-keeping procedures and SLD'S where the inverters are installed.

Verification of the good condition of the locks preventing access to the rooms where inverters are installed (inverter service rooms, production meter, access ladder , etc.)

Visual verification of the presence, good condition, expiry dates of the fire extinguishers in the inverter service rooms.

Verification of the proper condition of protective equipment against accidental falls (life lines, anchoring points, ladders, lanyards etc.).

Verification of the presence and good condition of the safety signage, and replacement if necessary.
All inverters, Main LV board, and DC cabinets.

All transformer stations.

+ Q18 and Q19 and main LV board