Replacing A Failed Hot-Swap Cooling Fan - IBM TotalStorage DS4000 EXP700 Installation, User's, And Maintenance Manual

4. Attach the power-supply nut and tighten it securely.
5. Connect the power cable to the power supply ac connector.
Figure 57. Connecting the power supply
6. Plug the supply power cable into a properly grounded electrical outlet.
7. Turn the power supply switch to the on position.

Replacing a failed hot-swap cooling fan

Attention:
ventilation and cooling. Improper ventilation might cause damage to the internal
components and circuitry.
The fans are interchangeable and replaceable and do not require preventive
maintenance. The fans help maintain proper air circulation across the components
inside the storage expansion enclosure. Air flows through the storage expansion
enclosure from the front to the back.
You can hot-swap the fans (replace them while the storage expansion enclosure is
turned on and running), provided that you complete the exchange within 10
minutes. This time limit applies only to the total time that a fan is out of the storage
expansion enclosure, beginning when you remove the failed unit and ending when
you reseat the new one. This does not include the time it takes you to perform this
entire procedure (checking LEDs, unpacking the new fan, and so on).
For any period of time exceeding ten minutes, both fan units must always be in
place, even if one is not functioning properly. This is necessary to maintain proper
cooling.
Complete the following steps to replace a hot-swap fan:
1. Check the LEDs on the back of the storage expansion enclosure.
2. If the fan amber Fault LED is lit, remove the failed fan:
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IBM TotalStorage DS4000 EXP700 and EXP710 Storage Expansion Enclosures: Installation, User's, and Maintenance Guide
AC power connectors
Strain relief clamps
Do not run the storage expansion enclosure without adequate
a. Unlock the fan latch by moving the latch towards the exterior of the storage
expansion enclosure (away from the power supply and ESM CRUs) and
hold it in the open position.
b. Use the handle (black knob) to pull the fan from the fan bay as shown in
Figure 58 on page 75.
1 Gb/s 2 Gb/s
X10 X1 Conflict
Tray Number
AC power switches