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9.2.3 Routine Maintenance
Item Method Period
Device clean
Check whether the air outlet and heat
sink are blocked by dust and other
objects.
Check if the air inlet and outlet are
normal. Clean the air inlet and outlet,
if necessary.
Six months to a year
(depend on the dust con-
tents in air)
Fans
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).
Once a year
Cable entry
Check whether the cable entry is in-
sufficiently sealed or the gap is exces-
sively large, and reseal the entry
when necessary.
Once a year
Electrical
connection
Check whether cables are loose or fall
off.
Check whether the cable is damaged,
especially the part in contact with the
metal enclosure.
Six months to a year
9.2.4 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.
9.2.5 Fan Maintenance
• Power off the inverter and disconnect it from all power supplies before main-
taining fans.
• After the inverter is powered off for 15 minutes, measure the voltage and cur-
rent with professional instrument. Only when there is no voltage nor current
can operators who wear protective equipment operate and maintain the inverter.
• Fan maintenance must be performed by professionals.
9 Troubleshooting and Maintenance User Manual
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