ACS/ACC/ACP 604/607 Drives ACx=ACS/ACC/ACP 5-1
Chapter 5 – Maintenance
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.
Heatsink
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.
Fan
The cooling fan lifespan is about 60,000 hours (R7) or 30,000 hours.
The actual lifespan depends on the AC drive 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 drive is operated in a critical part of a process, fan
replacement is recommended once these symptoms start appearing.
Replacement fans are available from ABB. Do not attempt operation
ABB specified spare parts.
Capacitors
The ACx 600 intermediate circuit employs several electrolytic
capacitors. Their lifespan is about 100,000 hours. It depends on the
drive 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 an input line 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.
Reforming
For more information on reforming (re-ageing) spare part capacitors
contact Technical Support.
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