Jinko Solar Maintenance and Care

It is required to perform regular in spection and maintenance of the modules, especially during the warranty period. To ensure optimum module performance, Jinko recommends the following maintenance measures:

Visual Inspection

Inspect the modules visually to find if there are any visual defects, if there are, the following items should be evaluated:

a) If the modules are observed having slight cell color differences at different angles, this is a normal phenomenon for modules with anti-reflection coating technology. If the colors are within the cell, please consult Jinko for further analysis.
b) Whether the glass is broken.
c) No sharp objects are in contact with the PV module surfaces.
d) The PV modules are not shaded by unwanted obstacles or foreign material.
e) Corrosion along the cells’ busbar. The corrosion is caused by moisture intrusion thought the module back sheet. Check the back sheet for damage.
f) Check whether the back sheet is burnt.
g) Check if screws and mounting accessories are tight, adjust and tighten as necessary.

For more please refer to the Operation and Maintenance Manual.

Cleaning

a) A buildup of dust or dirt on the module front face will result in a decreased energy output. Clean the module preferably once per annum, more frequently in dusty conditions, using soft cloth dry or damp. Water with high mineral content may leave deposits on the glass surface and is not recommended. It is recommended to use neutral water of the PH value ranging from 6.5 to 8.5 to clean the glass, so as not to cause damage to the glass coating layer;
b) Never use abrasive material under any circumstances;
c) In order to reduce the potential for electrical and thermal shock, Jinko recommends to clean PV modules during early morning or late afternoon hours when solar irradiation is low and the modules are cooler, especially in regions with hot temperatures;
d) Never attempt to clean PV module with broken glass or other signs of exposed wiring, as this presents a shock hazard;
e) Never use chemicals when cleaning modules as this may affect the module warranty and energy yield. For the environment with extreme climate, please contact Jinko after-sales department for specific requirement if needed;
f) For single-side module, backsheet cleaning is not necessary; for dual-glass module, cleaning the module backside regularly when necessary, and follow the requirements in 4.2 a) – e). Please wear insulated gloves and pay special attention to the cables and electrical connections during the backside cleaning.

Inspection of Connector and Cable

It’s recommended to implement the following preventive maintenance every 6 months:
a) Check the sealing gels of the junction box for any damage.
b) Examine the modules for signs of deterioration. Check all wiring for possible rodent damage, weathering and that all connections are tight and corrosion free. Check the electrical grounding.