Dell EMC PowerEdge R7425 Installation and Service Manual

Installing the heat sink

1. To install the heat sink, follow either of the options listed here, as applicable:
   1. If you are re-using a heat sink, remove the thermal grease from the heat sink with a clean lint free cloth.
   2. If you are using a new heat sink, the heat sink will have the thermal paste pre-applied to the heat sink. Remove the protective cover and install the heat sink.
2. If required, use the thermal grease syringe included with your processor kit to apply the grease on the top of the processor.
   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. Orient the heat sink with the screw holes on the processor plate. The captive screws on the heat sink should align with the screw holes on the processor plate.
4. Using a Torx #T20 screwdriver, tighten the captive screw 1 to secure the heat sink to the system board.
   NOTE The captive screw numbers are marked on the heat sink.
5. Tighten the captive screw 2 that is diagonally opposite to the screw 1.
6. Repeat the procedure for the remaining captive screws 3 and 4.
7. Tighten all the captive screws in the sequence 1, 2, 3, 4.