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Dell PowerEdge R750 Installation and Service Manual

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Removing the liquid cooling module

Prerequisites

  1. Follow the safety guidelines listed in the Safety instructions.
  2. Follow the procedure listed in the Before working inside your system.
  3. Remove the air shroud or remove the GPU air shroud.
  4. Remove the expansion card riser.
WARNING: The liquid cooling (LC) module and processor are too hot to touch for some time after the system has been powered off. Allow the liquid cooling module and processor to cool down before handling them.
NOTE:Rear I/O (RIO) board is different for the system with liquid cooling modules.
NOTE:The procedure to remove the processor from the liquid cooling module is same as removing the processor from the PHM.

Steps

  1. Using a Phillips #2 screw driver, loosen the captive screw on the liquid cooling ring holder.
  2. Tilt the liquid cooling ring holder to loosen the liquid cooling tubes.
  3. Disconnect the liquid cooling leak detection cable from the LC RIO board.
  4. Remove the liquid cooling tubes from the clip and LC RIO board.
  5. Slightly lift the liquid cooling tubes surrounding the DIMM slots.
  6. Using a Torx #T30 screwdriver, loosen the captive screws on the liquid cooling module.
    NOTE:Ensure the anti-tilt wires on the liquid cooling module are in locked position when loosening the captive screws.
  7. Set the anti-tilt wires on the liquid cooling module to the unlock position and lift the liquid module from the system.
    NOTE:The numbers on the image do not depict the exact steps. The numbers are for representation of sequence.
    Figure 1. Removing the liquid cooling module
    This image shows the steps to remove the liquid cooling heat sink modules.

Next steps

  1. If you are removing a faulty liquid cooling module, replace the liquid cooling modules, else remove the processor.

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