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Do not disconnect under load'
6
Operation and Maintenance
It is required to perform regular inspection and maintenance of the modules,
especially during the period of warranty. inform the supplier within 2 weeks when
modules are found to be defective.
ET Solar recommends the following maintenance items to ensure optimal
performance of the module.
6.1 Cleaning
This manual covers the requirements for the cleaning procedures of ET Solar PV
modules. Professional installers should read these guidelines carefully and
strictly follow these instructions. Failure to follow these instructions may result in
death, injury, or property damage. Damages induced by inappropriate
cleaning procedures will void ET Solar warranty.
The amount of electricity generated by a solar module is proportional to the
amount of light captured. A module with shaded cells generate less energy,
and therefore, it is essential to keep PV modules clean. The dirt such as bird
droppings, leaves, dust is usually need to be cleaned.
When cleaning the modules, make sure that the temperature difference
between the water and the module is in the range of -5
℃
-10
℃
.
Use a dry or wet, soft and clean cloth, sponge, or soft bristled brush to wipe the
photovoltaic module. Please make sure that the cleaning tools do not wear
out glass, EPDM, silicon, aluminum alloys or steel.
If there is greasy dirt or other substances which are difficult to clean,
conventional household glass cleaning agents can be used. Pay attention not
to use alkaline and strong acidic solvents, including hydrofluoric acid, alkali,
acetone.
For modules that are installed horizontally (0° tilt angle),
they should be cleaned more frequently, as they do
not have"self-cleaning" function as those installed at
10° or larger tilt angles.
The back surface of the monofacial module usually
does not need to be cleaned. When cleaning the back
of the bifacial module, avoid any sharp objects that
may cause damage or penetrate the base material.
The other cleaning requirements are the same as the front-side.
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