64 Maintenance
Replacing the power module board compartment fan
The R8i module has a fan to cool the circuit board compartment. You can access the fan
from the front of the module.
WARNING! Obey the safety instructions on page 9. If you ignore the
instructions, physical injury or death, or damage to the equipment can
occur.
1. Before you start, stop the inverter and
do the steps in Performing electrical
work on page 12.
2. Open the cover plates of the ISU
cabinet.
3. Remove the two M4×12 (T20) screws
that lock the fan holder.
4. Pull the fan holder out of the module.
5. Disconnect the fan cable.
6. Remove the four M3 (5.5 mm) nuts that
hold the fan.
7. Remove the fan from the fan holder.
8. Put the fan onto the threaded studs on
the fan holder with the airflow direction
arrow pointing towards the fan holder.
9. Install and tighten the four M3 (5.5 mm)
nuts that hold the fan.
10. Connect the fan cable.
11. Align and push the fan holder into the
module.
12. Install and tighten the two M4×12 (T20)
screws.
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