7.9 Do not remove the waterproof rubber rings out of the junction box or connectors.
7.10 Use of diesel oil for heating is strictly prohibited at installation site, which may lead to
connector failure because the gas after combustion of diesel and other petroleum products.
8 Maintenance
8.1Modules need to be inspected and maintained regularly, check all electrical connections to
ensure that there is no open circuit and well connected.
8.1.1 Check the open circuit voltage of each module:
8.1.2 Covered the modules completely by non-transparent material.
8.1.3 Disconnect the wire terminals
8.1.4 Remove the non-transparent material off the modules; check and measure the terminal
open circuit voltage.
8.1.5 If the measured voltage is reduced by 1/4, it supposed to be bypass diode damaged. Please
test the bypass diode performance.
8.2 It’s recommend that adopt the following maintenance to ensure the modules maintain the best
performance:
8.2.1 Check whether the modules have appearance defects: whether the surface of the modules
are damaged or abnormal, whether the modules are occluded by objects, whether the fixing
between the modules and the frame is loose or not, and contact qualified or experienced
maintenance personnel to adjust or repair after finding the abnormalities.
8.2.2 Clean modules once a year as much as possible, depending on local conditions. When dirt
appears on the surface of modules, it will reduce the power generation. When cleaning, a soft
sponge or a rag can be used to wet the glass surface of the modules. A mild, non-abrasive
detergent can be used to remove fouling. The use of corrosive chemical cleaners is strictly
prohibited. In order to reduce electric shock or burns, it is recommended to clean modules in the
morning or evening.
8.2.3 Mechanical and electrical checks are required every six months to ensure the modules’
connectors clean and reliable connected.And ensure good electrical connection and no corrosion.
8.2.4 It need ask qualified person to check the modules if have any doubt on the modules.
8.2.5 Please note that all maintenance instructions, such as brackets, charging rectifier, inverters