东方日升新能源股份有限公司
PV module installation and
maintenance manual
RISEN ENERGY CO.,LTD.
主导部门：组件研发中心
Page：NO.40 ,Total 41
Use dry or wet soft cloths, sponges, etc. to clean the modules during the cleaning
process, but do not put any modules directly into the water, do not use corrosive
solvents and do not wipe the PV modules with hard objects. When the pressure
water is used, the water pressure on the glass surface of the module must not
exceed 700 KPa. The module must not be subjected to additional external force. If
necessary, use isopropyl alcohol (IPA) according to the safety instructions to clean
and ensure that no IPA flows into the gap between the edge of the module and the
module frame.
To reduce potential electric shocks or burns, suggest cleaning the PV modules in
the early morning or evening when the sunlight is weak and the temperature is low,
especially for areas with higher temperatures.
It is forbidden to clean photovoltaic modules under weather conditions with heavy
rain, heavy snow or winds greater than class 4.
The back surface of the module normally does not need to be cleaned, but in the
event this is deemed necessary, avoid the use of any sharp objects that might
damage or penetrating the substrate material.
Water requirements when cleaning:
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, and softened water can be used when conditions
permitted.
Module inspection after cleaning
Visual inspection to check if the module is clean, bright and free of stains;
