Table 8 1 Maintenance checklist and interval
.
8 Maintenance
Before maintaining and commissioning inverter and its peripheral
distribution unit switch off all the charged terminals of the inverter
,
and wait at least 10 minutes after the inverter is powered off
.
inverter output
status
Statistically maintain the status of
electrical yield and remotely monitor
,
its abnormal status
.
NA
Weekly
yearly
monthly
PV inverter
cleaning
Check periodically that the heat sink is
free from dust and blockage
.
Clean periodically
the heat sink
.
WARNING
8 1 Routine Maintenance
.
Check Item
Check Content
Maintenance
Interval
Maintain
content
PV inverter
running
status
Check that the inverter is not damaged
or deformed
.
Check for normal sound emitted during
inverter operation
.
Check and ensure that all inverter
communications is running well
.
If there is any
abnormal
phenomenon
,
replace the
relevant parts
.
Semiannually
PV inverter
Electrical
Connections
Check that AC DC and communications
,
,
cables are securely connected
;
Check that PGND cables are securely
connected
;
Check that cables are intact and there
are not wire aging
;
If there is any
abnormal
phenomenon
,
replace the cable
or re connect it
-
.
41
