Chapter 5 - Maintenance; Heatsink; Fan; Capacitors - ABB ACS 600 Hardware Manual

Heatsink

Fan

Capacitors

Reforming

ACS/ACC/ACP 604/607 Frequency Converters
The ACx 600 requires minimum maintenance.
WARNING! All maintenance work described in this chapter should only
be undertaken by a qualified electrician. The Safety Instructions on the
first pages of this manual must be followed.
The ACx 600 can run into overtemperature Faults if the heatsink is not
clean. In normal environment, the heatsink should be checked and
cleaned annually.
Use compressed air to remove dust from the heatsink. (The airflow
direction must be from bottom to top.) Also, use a vacuum cleaner at
the air outlet to trap the dust. Fan rotation must be prevented in order to
prevent bearing wear.
The cooling fan lifespan is about 60 000 hours (R7) or 30 000 hours
(R8 and R9). The actual lifespan depends on the frequency converter
usage and ambient temperature.
Fan failure can be predicted by the increasing noise from fan bearings
and the gradual rise in the heatsink temperature in spite of heatsink
cleaning. If the frequency converter is operated in a critical part of a
process, fan replacement is recommended once these symptoms start
appearing.
The ACx 600 intermediate circuit employs several electrolytic
capacitors. Their lifespan is about 100 000 hours. It depends on the
frequency converter loading and the ambient temperature.
Capacitor life can be prolonged by lowering the ambient temperature. It
is not possible to predict capacitor failure.
Capacitor failure is usually followed by a mains fuse failure or a Fault
trip. Contact ABB if capacitor failure is suspected. Replacements are
available from ABB. Do not attempt operation with other than ABB
specified spare parts.
Reform (re-age) spare part capacitors once a year according to
ACS 600 Capacitor Reforming Guide (code: 64059629).
Chapter 5 – Maintenance
5-1