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Dell PowerEdge R6525 Installation and Service Manual

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Installing the liquid cooling heat sink modules

Prerequisites

Never uninstall the heat sink from a processor unless you intend to replace the processor or system board. The heat sink is necessary to maintain proper thermal conditions.

  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 system cover.
  4. Remove the air shroud.
  5. Remove riser 3 or liquid cooling riser 3.
  6. If installed, remove the processor dust cover.
  7. For new heat sinks, refer to Installing the heat sink step 1 and 2 for applying the thermal grease.

Steps

  1. Align the screws on the liquid cooling heat sink modules with the standoff screws on the system board. Ensure that the liquid cooling tubes and liquid detection cable are placed towards the rear of the chassis. Using a Torx #T20 screwdriver, tighten the captive screws in the order that is mentioned below:
    NOTE:The A1 extrusion on the L-type heat sink should face towards the system side.
    1. Partially tighten the captive screws 1 and 2 (approximately 3 turns).
    2. Partially tighten the captive screws 3 and 4 (approximately 3 turns).
    3. Tighten the captive screws 1 and 2 completely.
    4. Tighten the captive screws 3 and 4 completely.
  2. Ensure that the liquid cooling tubes leading towards the front of the chassis is placed between the DIMM slots and the J_SL connectors. And the tubes leading towards the rear of the chassis are placed in between the DIMM slots and the relay components.
    NOTE: Liquid detection cable must be placed underneath the cooling tubes to ensure it does not interfere with the PCIe risers
  3. Route the liquid cooling tubes through the rear exit point next to the I/O function panel. Ensure the routing follows the numbered labels on the tube and liquid cooling ring holder (1, 2).
  4. Connect the liquid cooling detection cable to the RIO connector.
  5. Insert the rubber rings on the tubes on to the rubber holder.
    NOTE:The numbers on the image do not depict the exact steps. The numbers are for representation of sequence.
  6. Using a Phillips #1 screwdriver, tighten the captive screw on the liquid cooling ring holder to secure it in place.
  7. Route the liquid cooling tubes and liquid cooling detection cable along side PSU 2 and secure them with the tube clip.
    Figure 1. Installing the liquid cooling heat sink modules
    This image shows the installation of the liquid cooling heat sink modules

Next steps

  1. Remove liquid cooling riser 3.
  2. Install the air shroud.
  3. Install the system cover.
  4. Follow the procedure listed in the After working inside your system.

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