Maintenance 103
Heatsink
The drive module heatsink fins pick up dust from the cooling air. The drive runs into
overtemperature warnings and faults if the heatsink is not clean. When necessary, clean
the heatsink as follows.
WARNING! Obey the instructions in chapter Safety instructions. If you
ignore them, injury or death, or damage to the equipment can occur.
WARNING! Use a vacuum cleaner with antistatic hose and nozzle. Using a
normal vacuum cleaner creates static discharges which can damage circuit
boards.
1. Stop the drive and do the steps in section Precautions before electrical work on page
16 before you start the work.
2. Remove the drive module from the cabinet. See section Replacing the drive module
on page 108.
3. Undo the attaching screws of the handle plate of the drive module.
4. Remove the handle plate.
5. Vacuum the interior of the heatsink from the opening.
6. Blow clean compressed air (not humid or oily) upwards from the opening and, at the
same time, vacuum from the top of the drive module.
7. Reinstall the handle plate.
8. Install the drive module back into the cabinet.
Fans
The lifespan of the cooling fan of the drive depends on the running time of the fan, ambient
temperature and dust concentration. See the firmware manual for the actual signal which
indicates the running time of the cooling fan. Reset the running time signal after a fan
replacement.
Replacement fans are available from ABB. Do not use other than ABB specified spare
parts.
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