Routine maintenance
To preserve long term proper operation of the inverter, you are advised to
perform the routine maintenance operations listed in this chapter.
Maintenance operations shall be performed only by qualied personnel or ABB personnel
(under a servicing contract). The maintenance schedule may vary depending on the envi-
ronmental conditions of the installation.
Table: routine maintenance
Annual visual
inspections
• Check that the inverter is operating properly, without any alarm signals
• Ensure that all the safety labels and 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 or anything which
could reduce the heat exchanging capacity of the heat sink) at the top, at the
bottom and between the ns.
Annual operations
• Check the tightening of the cable glands and AC connector cable gland.
• Check the front cover is fixed
• If there is no monitoring system, check the record of alarms and errors using
the indications given in the manual in order to check recent malfunction signals
Annual cleaning
• Clean the equipment; in particular the heat sink (using compressed air)
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