Routine Maintenance; Cleaning Air Inlet And Outlet; Fan Maintenance - Sungrow SG250HX User Manual

9 Troubleshooting and Maintenance
NOTICE
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.

9.2.2 Routine Maintenance

Item
Device clean
Fans
Cable entry
Electrical connec­
tion

9.2.3 Cleaning Air Inlet and Outlet

A significant amount of heat is generated when the inverter is working.
In order to maintain good ventilation, please check to make sure the air inlet and outlet are
not blocked.
Clean the air inlet and outlet with soft brush or vacuum cleaner if necessary.

9.2.4 Fan Maintenance

102
Method
Check whether the air outlet and heat
sink are blocked by dust and other ob­
jects.
Check if the air inlet and outlet are nor­
mal. Clean the air inlet and outlet, if
necessary.
Check whether there is a fan alarm on
the App.
Check whether there is any abnormal
noise when the fan is rotating.
Clean or replace the fans if necessary
(see the following section).
Check whether the cable entry is insuf­
ficiently sealed or the gap is excessive­
ly large, and reseal the entry when nec­
essary.
Check whether cables are loose or fall
off.
Check whether the cable is damaged,
especially the part in contact with the
metal enclosure.
User Manual
Period
Six months to a year
(depend on the dust con­
tents in air)
Once a year
Once a year
Six months to a year