Routine Maintenance - Huawei SUN2000-20KTL-M3 User Manual

SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual
Figure 8-1 Installing the DC switch locking screw
Step 5 Turn off the DC switch (if any) 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 off the system before cleaning the system, connecting cables, and checking
grounding reliability.
Table 8-1 Maintenance checklist
Check Item
System
cleanliness
System
running status
Electrical
connections
Issue 18 (2024-03-10)
CA UTION
Check Method
Check whether the heat sinks are
blocked or dirty.
● Check whether the inverter is
damaged or deformed.
● Check whether the inverter
generates abnormal sound during
operation.
● Check whether all inverter
parameters are correctly set during
operation.
● Check whether cables are
disconnected or loose.
● Check whether cables are damaged,
especially whether the cable sheath
that contacts a metal surface is
damaged.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Maintenance
Interval
Once every 6 to 12
months
Once every 6
months
6 months after the
first commissioning
and once every 6 to
12 months after that
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