Step 4 (Optional) Install the locking screw next to DC SWITCH.
Step 5 Turn o the DC switch between the inverter and PV strings.
----End
8.2 Routine Maintenance
To ensure that the inverter can operate properly for a long term, you are advised
to perform routine maintenance on it as described in this section.
Power o the system before cleaning the system, connecting cables, and checking
grounding reliability.
Table 8-1 Maintenance checklist
Check Item Check Method Maintenance
Interval
System
cleanliness
Check periodically whether the heat
sinks are blocked or dirty.
Once every 6 to 12
months
Cleanness of
air intake and
exhaust vents
Check periodically whether there is
dust or foreign objects at the air intake
and exhaust vents.
Power o the
inverter and remove
dust and foreign
objects. If necessary,
remove the bae
plates from the air
intake and exhaust
vents for cleaning.
Once every 6 to 12
months (or once
every 3 to 6 months
based on the actual
dust conditions in
the environment)
Fan Check whether the fan generates
abnormal noise during operation.
Remove foreign
objects from the fan.
If the abnormal
noise persists,
replace the fan. For
details, see 8.4
Replacing a Fan.
Once every 6 to 12
months
SUN2000-(12KTL-25KTL)-M5 Series
User Manual 8 Maintenance
Issue 10 (2024-05-14) Copyright © Huawei Digital Power Technologies Co., Ltd. 68
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