User`s guide

StorageWorks RAID Array 200 Controller Installation and Standalone Configuration Utility
8–24 EK–SWRA2–IG. C01
8.4.4 Replacing a Blower
WARNING
Due to hazardous high-current energy levels pre-
sent in the backplane area, use extreme caution
while swapping blowers. Keep all metal objects,
including rings and jewelry, out of the
blower/backplane cavity.
CAUTION
To prevent an overheating condition, the replace-
ment blower should be readily available to imme-
diately replace the faulty blower. When a blower
is removed, the change in the airflow pattern re-
duces the cooling to the point that the pedestal
can overheat in 60 seconds
The pedestal has two blowers mounted at the rear. Connectors on the backplane
provide the +12 Volts dc required to operate the blowers. When either blower
fails, the shelf status LED on the front of the power supply is extinguished (refer
to Table 8-1).
As long as both blowers are installed and only one blower is operational, there is
sufficient airflow to prevent an overheating condition. Figure 8-4 shows the re-
moval of a blower.
To replace a blower, use the following procedure:
1. Have a replacement blower available.
2. Open the door on the rear bezel and determine which of the two blowers has
failed by feeling the air flow at the bottom of each blower.
3. Remove the bezel from the pedestal by pushing down on the locking tabs at
the bottom of the bezel.
4. Using a Phillips screwdriver, remove the safety screw in the corner of the
defective blower.
5. Press the side locking tabs to release the blower.
6. Pull the blower straight out to disconnect it from the pedestal power connec-
tor.