Maintenance
86
Fan
The cooling fan lifespan of the drive is about 50 000 operating hours. The actual
lifespan depends on the drive usage and ambient temperature. See the appropriate
ACS800 Firmware Manual for an actual signal which indicates the hours of usage of
the fan. For resetting the running time signal after a fan replacement, please contact
ABB.
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 use
other than ABB specified spare parts.
Fan replacement (R2, R3)
To remove the fan, release the retaining clips. Disconnect the cable. Install the new
fan in reverse order.
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