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Jolywood (Taizhou) Solar Technology Co.,Ltd.
Kaiyang Rd., Jiangyan Economic Development zone, Taizhou City, Jiangsu Province, P. R. China
www.jolywood.cn
+86-523-8061 2361
Installation Manual
- Jolywood N-type Mono-crystalline Double Glass Module
6.3 Cleaning
The amount of electricity produced by a solar
module is proportional to the amount of light
reach on surface of it. A dust covered module
produces relatively lower power, so it is important
to keep module clean.
6.3.1 Water quality requirements
6.3.2 Module inspection after
cleaning
6.3.2.1
PH: 5 ~7;
Chloride or salt content:0 - 3,000 mg/L;
Turbidity:0-30 NTU;
Conductivity:1500~3000 μs/cm;
Total dissolved solids:≤1000 mg/L;
Water hardness:0-40 mg/L;
Non-alkaline water must be used, use
demineralized water when conditions are
available.
Note: when using robot clear modules, Jolywood
recommends using soft plastic brush. Module
damage, poor appearance and power
degradation caused by improper robot clear are
not within the warranty scope of Jolywood;
a)
The PV module should be cleaned under
the irradiance of less than 200W/m2. Avoiding
cleaning water with great different temperature
from air to avoid cracking. Hard water needs to be
softened. The water remains should be removed
from glass surface after cleaning.
b)
It is strictly forbidden to clean PV modules
under special weather: wind level greater four,
heavy rain or heavy snow.
c)
During cleaning, the water pressure on
the surface of module glass shall not exceed 4MPa
, and the module is not allowed to withstand
additional external force.
d)
During cleaning, it is strictly forbidden to
step on the modules, splashing water to the back
of the modules or cables. Ensure that connectors
are clean and dry to prevent electric shock and
fire hazard. Steam clean machines are strictly
prohibited; soft parts, Cloth and mild detergent
and water should be used. Do not put modules
directly into the water. Serious thermal shocks
also could damage modules.
e)
The difficult-to-clean substances such as
oil on the surface of modules, use a non-friction
neutral liquid cleaner. Do not use any organic
solvent containing alkali or acid. Do not use
corrosive solvents or wipe the PV modules with a
hard object.
f)
If you are not sure whether the array need
to cleaned, first select a column of particularly
dirty array to begin cleaning. If the power
generated increased less than 5%, cleaning is
usually not required. The above verification
should be carried out only under a stable
sunshine rate (sunny, strong sunshine, no cloud).
g)
The back of the PV module usually does
not need to be cleaned; If you need to clean the
back of the PV module , ensure that the cleaning
liquid does not penetrate into the bottom layer of
the material.
h)
Regularly trim the vegetation to prevent
shading created on the module surface, which
would decrease power generation.