User Guide

Mac Pro (8x) Basics 11
Krytox Thermal Grease
To ensure a proper seal between the heatsink and processor, a bead of Krytox grease rims •
the gasket on the underside of the heatsink. Replacement heatsinks come with the grease
already applied.
Use the following guidelines for when to reapply Krytox grease to the heatsink. (Refer to •
“Processor Heatsinks” in the Take Apart chapter for detailed instructions on how to apply or
clean o the grease.)
In most cases, you do not need to reapply Krytox grease when installing a new -
processor or when transferring processors and heatsinks to a replacement logic board.
If you are installing a new heatsink , remove any residual grease from the outer edges -
of the processor. Do not apply new grease to the heatsink or processor, as the heatsink
comes with the full capacity of grease applied.
For more detailed information, refer to “Processor Heatsinks” and “Processors” in the Take Apart
chapter.
Safety and First Aid Guidelines
Below is a summary of safety and rst aid measures for exposure to the coating on the processor
heatsink and processor or the Krytox grease used in sealing the processor heatsink to the
processor. For complete instructions, refer to the specic Material Safety Data Sheets (MSDS)
included with the replacement parts.
Safety
Avoid contact with eyes.
Avoid contact with skin.
Wash thoroughly after handling.
Do not store or consume food, drink, or tobacco in areas where they may become
contaminated with the material.
First Aid
Eyes: Immediately ush with plenty of water. If wearing contact lenses, after initial ushing,
remove contact lenses and continue to ush for 15 minutes. Have eyes examined by a
medical professional if irritation persists.
Skin: Wash skin with soap and running water. The recommended ushing is 15 minutes if
pain or irritation occurs. Remove and wash contaminated clothing. Seek medical attention if
irritation or redness develops.
Inhalation: Remove to fresh air. If not breathing, give articial respiration. If breathing is
dicult, give oxygen. Call a physician.
Ingestion: Do not induce vomiting. Contaminated individual should immediately be given
two glasses of water. Never give anything by mouth to someone who is unconscious, having
convulsions, or unable to swallow. Call a physician.