Removal and replacement procedures 40
Fan bank
There are three fan banks per cooling zone.
CAUTION:
Power must be removed from the fan power assembly before removing or replacing
a fan or fan bank.
You need a screwdriver for installation.
Removing the fan bank
1.
Take manual control of the fan speed in the affected zone from the ECS panel.
2.
Set the fan speed to zero.
3.
Unseat both power supplies from the fan power assembly.
4.
Remove the fan bank wire harness (1).
5.
Remove the six screws that secure the fan bank (2).