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3.3.4 Precautions
1) The controller can adapt to 18V and 36V solar panels, please do not use solar panels
with open circuit voltage higher than 50V, otherwise there is a risk of burning.
Please do not overload the controller. The maximum power of 18V solar panels is 200W.
If two 18V solar panels have a total power of more than 200W, please use them in se-
ries. The maximum power of 36V solar panels is 400W. If there are two or more solar
panels, please use them in parallel. (Solar panel parameter reference: 18V solar panel
working voltage is 18V, open circuit voltage is 22V; 36V solar panel working voltage is
36V, open circuit voltage is 44V. Please check the parameters on the back of the solar
panel carefully before connecting.)
2) The controller will generate heat during operation, so it is recommended to install it in a
ventilated and heat dissipation environment.
3) When using the system, it is recommended to connect the controller and the solar panel
first, and then connect the controller to the product equipment, otherwise the phenome-
non of ignition will appear when wiring.
4) The input and output of the system adopt isolation design, and do not share negative
pole, let alone positive pole.
5) There are no maintenance and repair parts in the controller, and the internal voltage is
higher than human safety. Please do not disassemble the controller by yourself.
6) Please do not put water or corrosive liquid into the controller, which will damage the con-
troller.
7) When operating, pay attention to use insulating tools and keep them dry.
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