37
Table
8
.
1
Maintenance
checklist
and
interval
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
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
.
8
Maintenance
8
.
1
Routine
Maintenance
CPS SCA-S/
SM Series Inverter