Dell PowerVault 221S (SCSI) - Manual (Page 34)

Troubleshooting: Dell PowerVault 220S and 221S Systems Installation and Troubleshooting Guide
file:///C|/Users/rishi_sood/Desktop/220s/en/it/6f704c51.htm[3/7/2013 12:07:22 PM]
1. Stop all client activity and power down the host system.
2. Turn off the power switch on the power supply (see Figure 1-7 ).
3. Disconnect the power cable from the electrical outlet and the power supply.
4. Using a #2 Phillips-head screwdriver, turn the two captive screws counterclockwise to release the power supply and
cooling module from the module bay (see Figure 5-5 ).
CAUTION: The power supply and cooling modules are heavy. Use both hands when removing.
5. Holding the handle on the power supply, carefully pull the power supply and cooling module out of the module bay.
NOTICE: The power-supply handle is provided to ease the task of pulling the power supply free from the bay. Do not
use this handle to carry your storage system.
6. Detach the cooling module from the power supply by pressing the tab on the back of the cooling module and sliding the
cooling module back and up.
7. Attach the cooling module to a new power supply by performing the reverse of step 6 .
8. Carefully slide the new power supply and cooling module into the empty module bay, and push the module all the way
to the back of the bay until it is seated in the backplane connector.
The power supply is seated when its front plate is even with the front plate of the adjacent power supply.
9. Re-insert the two captive screws and tighten until the new power supply and cooling module are secured in the module
bay.
10. Connect the AC power cable to the new power supply and to an electrical outlet.
11. Turn on the on/off switch on the new power supply.
Replacing a Cooling Module
Your storage system supports two combined power supply and cooling modules. While the system is designed to operate
normally with only one functional power supply, both cooling modules (with two blowers each) must be present for proper
cooling. If only one power supply is needed, a blank must be inserted into the other slot to mount the second cooling module.
CAUTION: A power supply and cooling module can be removed from a powered-on system for a maximum
period of five minutes. Beyond that time, the system begins to overheat, and at a critical temperature,
shuts down to prevent damage.
The cooling module is mounted to the power supply using a hook-and-latch fastening design. This design simplifies the
removal and installation of cooling modules and power supplies.
To replace a cooling module, perform the following steps:
1. Using a #2 Phillips-head screwdriver, turn the two captive screws counterclockwise to release the power supply and
cooling module (see Figure ) from the module bay.
Figure 5-7. Replacing a Cooling Module