Thermal Grease - IBM System x3500 Installation And User Manual

If you have other devices to install or remove, do so now. Otherwise, go to
"Completing the installation" on page 109.

Thermal grease

The thermal grease must be replaced whenever the heat sink has been removed
from the top of the microprocessor and is going to be reused or when debris is
found in the grease.
When you are installing the heat sink on the same microprocessor that it was
removed from, make sure that the following requirements are met:
v The thermal grease on the heat sink and microprocessor is not contaminated.
v Additional thermal grease is not added to the existing thermal grease on the heat
Notes:
v Read the safety information on page vii.
v Read the "Installation guidelines" on page 37.
v Read "Handling static-sensitive devices" on page 39.
To replace damaged or contaminated thermal grease on the microprocessor and
heat sink, complete the following steps:
1. Place the heat sink on a clean work surface.
2. Remove the cleaning pad from its package and unfold it completely.
3. Use the cleaning pad to wipe the thermal grease from the bottom of the heat
4. Use a clean area of the cleaning pad to wipe the thermal grease from the
5. Use the thermal-grease syringe to place 9 uniformly spaced dots of 0.02 mL
sink and microprocessor.
sink.
Note: Make sure that all of the thermal grease is removed.
microprocessor; then, dispose of the cleaning pad after all of the thermal grease
is removed.
each on the top of the microprocessor. The outermost dots must be within
approximately 5 mm of the edge of the microprocessor; this is to ensure uniform
distribution of the grease.
Chapter 2. Installing optional devices
105