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84 Maintenance
Fans
The lifespan of the cooling fan depends on the running time of the fan, ambient temperature
and dust concentration. Replacement fans are available from ABB. Do not use other than
ABB specified spare parts.
￭
Replacing the cooling fans
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or death, or
damage to the equipment can occur.
If you are not a qualified electrician, do not do installation or maintenance work.
WARNING!
Use the required personal protective equipment. Wear protective gloves and long
sleeves. Some parts have sharp edges.
1. Stop the drive and do the steps in section
you start the work.
2. Remove the shrouding in front of the fan (if any).
3. Disconnect the fan wiring.
4. Remove the two retaining screws (a).
5. Pull the fan outwards to separate it from the heat exchanger housing.
6. Install the new fan in reverse order. Align the guide pins (b) at the rear of the fan cowling
with the slots (c) in the module bottom guide, then reinstall the retaining screws (a).
a
Electrical safety precautions (page 60)
c
b
before
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