136 Maintenance
Fans
The lifespan of the cooling fans of the drive depends on the running time, 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.
Replacing the cabinet “door” fan
WARNING! Obey the instructions in chapter Safety instructions. If you
ignore them, injury or death, or damage to the equipment can occur.
1. Stop the drive and do the steps in section Electrical safety precautions on page 16
before you start the work.
2. Open the cabinet door.
3. If there is a mounting plate/s
above the fan, loosen the four screws and pull out the
plate. Unplug the connectors and remove the plate.
If there is no mounting plate/s
, but instead a shroud/s above the fan, undo the four
screws and remove the shroud/s.
In frame R11 marine versions
(option +C121), undo the screws and remove the marine
support. See Replacing the drive and LCL filter modules (frame R11) on page 144.
4. Loosen the four mounting screws of the fan mounting plate.
5. Lift the mounting plate upwards.
6. Unplug the fan supply wires.
7. Lift the fan mounting plate off.
8. Undo the four mounting screws of the fan and remove the fan from the mounting plate.
The finger guard of the fan is attached by the same screws on its front side. Keep the
finger guard for reuse.
9. Install the new fan in reverse order.
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