Removal and replacement procedures 60
a.
Replace the fan bank you removed, if applicable. For more information, see "Replacing the cooling
)."
b.
Replace the fan you removed, if applicable. For more information, see "Replacing the cooling fan
("
Replacing the variable speed IT cooling fan
" on page
)."
Differential pressure sensors
The differential pressure sensors are located in the cold aisle.
You need a screwdriver to remove and replace the differential pressure sensor.
Removing the differential pressure sensor
1.
Label the pressure sensor tube connection locations, and then remove the tubes from the differential
pressure sensor.
2.
Label the sensor wire connection locations, loosen the screws securing the sensor wires, and then
remove the sensor wires.
3.
Remove the two bolts securing the differential pressure sensor (1), and then remove the differential
pressure sensor (2).