Table of Contents
Advertisement
R
outine maintenance
It is recommended that maintenance operations are only performed by qualified personnel or
ABB personnel (under a servicing contract). The maintenance schedule may vary depending
on the environmental conditions of the installation premises.
Annual visual inspections
Annual operations
Annual cleaning
Routine maintenance operations should not be considered obligatory,
but rather as recommended in order to maintain the efficiency of the PV
system.
Table: routine maintenance
• Check that the inverter is operating properly, without any alarm signals
• Ensure all labels and safety symbols are visible
• Check the integrity of the cables, connectors and cable glands outside
the inverter
• Check that the environmental conditions have not changed
dramatically from those on installation.
• Check there are no obstacles (animals, insects, leaves, vines or
plants growing in heat sink, or anything which could reduce the heat
exchanging capacity of the heat sink) at the top, at the bottom and
between the fins.
• Check the tightening of the cable glands and the screw terminal blocks
• Check the front cover is secured to the wiring boxes
• If there is no monitoring system, check the record of alarms and errors
using the indications provided in the manual in order to check recent
notification of recent malfunctions.
• For the models with AC+DC disconnect switch, it is recommended
that once a year the disconnect switch is operated a number of times
(at least 10) to keep the contacts clean and prevent oxidation. This
operation must be carried out in periods with low input power or at
night.
• Clean the equipment; verify, in particular, clean the lower array of the
cooling fan assembly and the heat sink.
- 148 -
8 - Maintenance
Advertisement
Table of Contents
