Install a heat sink

Follow the instructions in this section to install a heat sink. This task requires a Torx T20 driver. The procedure must be executed by a trained technician.

S002

CAUTION

The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.

About this task

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

• Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.

• Touch the static-protective package that contains the component to any unpainted metal surface on the server; then, remove it from the package and place it on a static-protective surface.

Procedure

1. Record the processor identification label.
   To replace a processor and reuse the heat sink:

   1. Remove the processor identification label from the heat sink and replace it with the new label that comes with the replacement processor.
   2. Wipe off old thermal grease on the heat sink with an alcohol cleaning pad.

   To replace a heat sink and reuse the processor:

   1. Remove the processor identification label from the old heat sink and place it on the new heat sink in the same location.
      Note

      If you are unable to remove the label and place it on the new heat sink, or if the label is damaged during transfer, write the processor serial number from the processor identification label on the new heat sink in the same location as the label would be placed using a permanent marker.
   2. Wipe off old thermal grease on the heat sink with an alcohol cleaning pad.
   3. Check whether the manufacturing date on the new heat sink exceeds two years.
      • If yes, wipe off the thermal grease on the new heat sink with an alcohol cleaning pad, and go to 2
      • If no, go to 3
2. Apply new thermal grease on the top of the processor with a syringe by forming four uniformly spaced dots, while each dot consists of about 0.1 ml of thermal grease.
   Figure 1. Thermal grease application
   
   
3. Install the heat sink.
   1. Align the captive screws on the heat sink with the screw holes on the processor socket; then install the heat sink on the processor socket.
   2. Partially tighten all the screws with proper torque in the installation sequence shown on the heat-sink label, and repeat the procedure until all the screws are fully-tightened.
      Note

      For reference, the torque required to tighten the screws is 12.0+/- 1.2 lbf-in, 1.36+/- 0.14 N-M.

      Figure 2. 1U heat sink installation
      
      

      Figure 3. 2U heat sink installation