Dell PowerEdge R7525 Installation and Service Manual

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Installing the heat sink

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. If installed, remove the air shroud.
  4. If installed, remove the processor dust cover.
NOTE:The procedure to install standard and L-type heat sink is similar.

Steps

  1. If you are using an existing heat sink, remove the thermal grease on the heat sink by using a clean lint-free cloth.
    NOTE:For a new heat sink, the thermal paste is preapplied to the heat sink. Remove the protective cover, and install the heat sink.
  2. Use the thermal grease syringe included with your processor kit to apply the grease in a thin spiral on the top of the processor.
    Figure 1. Applying thermal grease
    This image shows how to apply thermal grease.
    CAUTION:Applying too much thermal grease can result in excess grease coming in contact with and contaminating the processor socket.
    NOTE:The thermal grease syringe is intended for single use only. Dispose of the syringe after you use it.
  3. Align the screws on the heat sink with the standoff screws on the system board.
    NOTE:The A1 extrusion on the L-type heat sink should face towards the system side.
  4. Using a Torx #T20 screwdriver, tighten the captive screws in the order that is mentioned below:
    NOTE:The captive screw numbers are marked on the heat sink and are tightened to a torque value of 12.0 ± 1.2 lbf-in.
    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.
    Figure 2. Installing the heat sink

    This image shows Installing the heat sink.

Next steps

  1. If removed, install the air shroud.
  2. Follow the procedure listed in the After working inside your system.

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