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Choose inverters with isolation transformers in hot and wet areas ( such as shores, wetlands) , to ensure proper
module function under positive voltage .
9.Maintenance And Care
A well designed solar system requires minimal maintenance; however, system performance and
reliability can be improved by taking some simple steps.
Maintenance should be carried out at least once a year by trained personnel, always wearing rubber
gloves and boots with maximum working voltage not lower than 1000V DC (For MS.**, not lower than
1500V DC).
Maysun any vegetation which may shade the solar array thus impacting performance.
Check that mounting hardware is properly tightened.
Inspect all cables to verify that connections are tight; the cables are protected from direct sunlight and
sited away from areas of water collection.
Check that all string fuses in each non/earthed pole are operating.
It is recommended to check the torque of terminal bolts and the general condition of wiring at least once
a year. Also, check that mounting hardware is properly torqued. Loose connections will result in damage to
the array.
Replacement modules must be of same type. Do not touch live parts of cables and connectors. Use
appropriate safety equipment (insulated tools, insulating gloves, etc.) when handling modules.
The amount of electricity generated by a solar module is proportional to the amount of light falling on it.
A module with shaded cells will produce less energy and therefore it is important to keep modules clean.
Normally rain water is sufficient to keep the modules clean however it is particularly important to ensure
that the solar modules are clean before onset of summer. Products installed at a tilt angle below 10°or which
are located in particularly dusty areas, are installed in landscape orientation or in areas of high pollution or
close to large bird populations will require more regular cleaning.
When cleaning the module use a soft cloth together with a mild detergent and clean water. Take care to
avoid severe thermal shocks which might damage the module by cleaning modules with water which has a
similar temperature to the modules being cleaned.
When cleaning the back surface of the module, take care to avoid penetrating the substrate material.
Modules that are mounted flat (0°tilt angle) should be cleaned more often, as they will not ''self-clean'' as
effectively as modules mounted at a 10°tilt or greater.
The benefit of cleaning dirt and debris from the array is a trade-off between the cost of the cleaning,
increased energy production as a result of this cleaning, and the inevitable re-soiling of the laminates over
time once they have been cleaned.
In the event that the solar modules need to be cleaned then clean the module use a soft cloth together
with a mild detergent and clean water. Take care to avoid severe thermal shocks which might damage the
module by cleaning modules with water which has a similar temperature to the modules being cleaned.
On large systems, the benefit of cleaning dirt and debris from the array is a trade-off between the cost of
the cleaning, increased energy production as a result of this cleaning, and the time for the re-soiling of the
modules after cleaning.
If you are unsure whether the array or section thereof needs to be cleaned then first select an array string
that is particularly soiled then Measure & record the inverter feed in current from that string
Summary of Contents for MS M-36 Series
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