3
Check the positive and negative polarity of the PV strings, and connect the PV con-
nectors to corresponding terminals only after ensuring polarity correctness.
During the installation and operation of the optimizer, please ensure that the posi-
tive or negative polarities of PV strings do not short-circuit to the ground. Other-
wise, the product may be damaged. And the damage caused by this is not covered
by the warranty.
Comply with the safety instructions related to PV strings and the regulations re-
lated to the local grid.
1.4 Operation Safety
• When the product is running, it is strictly forbidden to plug and unplug any con-
nector on the optimizer.
• When the product is running, do not disassemble any parts of the optimizer.
Otherwise, electric shock may occur.
• Do not touch the product when it is running. Otherwise, it may cause burns.
1.5 Maintenance Safety
Risk of device damage or personal injury due to incorrect service!
• Be sure to use special insulation tools when perform high-voltage operations
• Before maintaining the optimizer, first cut off the power input and the power
output, and measure the voltage and current with professional measuring in-
strument. Only when there is no voltage nor current can operators who wear
protective equipment operate and maintain the optimizer.
• Even if the product is shut down, it may still be hot and cause burns. Operating
the product with protective gloves after it cools down.
If a fault occurs during operation, be sure to re-power the optimizer after the fault
is cleared. Otherwise, the fault may expand, or the device may be damaged.
User Manual 1 Safety Instructions
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