User Manual 1 Safety Instructions
1.5 Maintenance Safety
DANGER
Risk of inverter damage or personal injury due to incorrect service!
• 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.
• 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
Touching the power grid or the contact points and terminals on the inverter connected
to the power grid may lead to electric shock!
• The power grid side may generate voltage. Always use a standard voltmeter to
ensure that there is no voltage before touching.
CAUTION
To prevent misuse or accidents caused by unrelated personnel, post prominent warn
ing signs or demarcate safety warning areas around the product.
NOTICE
To avoid the risk of electric shock, do not perform any other maintenance operations
beyond those described in this manual. If necessary, contact your distributor first.
If the problem persists, contact SUNGROW. Otherwise, the losses caused is not cov
ered by the warranty.
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