9 Troubleshooting and Maintenance User Manual
9.2 Maintenance
9.2.1 Maintenance Notices
DANGER
Risk of inverter damage or personal injury due to incorrect service!
• Be sure to use special insulation tools when perform high-voltage operations.
• Before maintenance, disconnect the AC circuit breaker on the grid side and then
the DC switch. If a fault that may cause personal injury or device damage is found
before maintenance, disconnect the AC circuit breaker and wait until the night be
fore operating the DC switch. Otherwise, a fire inside the product or an explosion
may occur, causing personal injuries.
• Turn the DC switch from ON to OFF and continue to turn it 20 degrees counter
clockwise, the DC switch can be locked here.
（For
countries “AU” and
“NZ”）
• After the inverter is powered off for 5 minutes, measure the voltage and current
with professional instrument. Only when there is no voltage nor current can oper
ators who wear protective equipment operate and maintain the inverter
• Even if the inverter is shut down, it may still be hot and cause burns. Wear protec
tive gloves before operating the inverter after it cools down.
DANGER
When maintaining the product, it is strictly prohibited to open the product if there
is an odor or smoke or if the product appearance is abnormal. If there is no odor,
smoke, or obvious abnormal appearance, repair or restart the inverter according to
the alarm corrective measures. Avoid standing directly in front of the inverter during
maintenance.
CAUTION
To prevent misuse or accidents caused by unrelated personnel: Post prominent warn
ing signs or demarcate safety warning areas around the inverter to prevent accidents
caused by misuse.
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