10 Maintenance
Periodic maintenance
Installation and Operation Manual for Solar Power Inverter M70A EU V2.0 EN 2020-08-03
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10.2 Periodic maintenance
Delta inverters are designed for use under difficult environmental
conditions and are characterized by low maintenance require-
ments.
Excessive deposits on the fan module and air filters may affect
energy yield, but will not limit operation.
In order to detect unusual power losses in time, Delta recom-
mends the use of a monitoring system in combination with the
Delta Modbus protocol.
It is the responsibility of the PV system service provider to draw
up a maintenance plan for the inverters that takes into account
the local external conditions.
AC cables made of aluminium must be retightened once a
year.
10.3 Replacing components
The replacement of components must only be carried out by
electrical installers who are trained and approved for work on
grid-connected solar inverters.
The following components may be replaced:
● Fan module and air filters
●
Internal fans
●
AC surge protection devices
●
DC surge protection devices
●
Sub-1G antenna
●
Wi-Fi module
