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9.2
Maintenance
9.2.1 Maintenance Notices
Risk of inverter damage or personal injury due to incorrect service!
•
Be sure to use special insulation tools when perform high-voltage operations.
•
Before any service work, first disconnect the grid-side AC circuit breaker and
check the inverter status. If the inverter indicator is off, please wait until night to
disconnect the DC switch. If the inverter indicator is on, directly disconnect the
DC switch.
•
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 op-
erators 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 pro-
tective gloves before operating the inverter after it cools down.
To prevent misuse or accidents caused by unrelated personnel: Post prominent
warning signs or demarcate safety warning areas around the inverter to prevent
accidents caused by misuse.
Restart the inverter only after removing the fault that impairs safety performance.
As the inverter contains no component parts that can be maintained, never open
the enclosure, or replace any internal components.
To avoid the risk of electric shock, do not perform any other maintenance opera-
tions beyond this manual. If necessary, contact SUNGROW for maintenance. Oth-
erwise, the losses caused is not covered by the warranty.
Touching the PCB or other static sensitive components may cause damage to the
device.
•
Do not touch the circuit board unnecessarily.
•
Observe the regulations to protect against electrostatic and wear an anti-static
wrist strap.
9 Troubleshooting and Maintenance
User Manual
Summary of Contents for SG250HX-US
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