Dell XPS 720 H2C Owner's Manual - Page 128

Liquid Cooling Assembly CAUTION: Before you perform this procedure, follow the safety instructions located in "Safety Instructions for Liquid Cooling Assembly" on page 128 and the Product Information Guide. Safety Instructions for Liquid Cooling Assembly • The liquid cooling assembly is not user serviceable or upgradeable. All required service should be done by qualified service personnel only. • The liquid cooling assembly in your system contains a non-refillable coolant. In the event of a coolant leak, shut down your system immediately. Unplug your system from the power outlet and contact Dell Technical Support. • In the event of skin contact with the coolant, wash your skin with soap and water. Seek medical attention if irritation develops. • In the event of eye contact with the coolant, rinse your eyes immediately with water, with your eyelids open, for 15 minutes. Seek medical attention if irritation persists. Removing the Liquid Cooling Assembly 1 Follow the procedures in "Before You Begin" on page 85. 2 Remove the computer cover (see "Removing the Computer Cover" on page 86). CAUTION: The processor heat sink can get very hot during normal operation. Be sure that the heat sink has had sufficient time to cool before you touch it. 3 Remove the drive panel (see "Removing the Drive Panel" on page 113). 4 Slide the drive release latch towards the base of the computer to release the shoulder screw(s) on the optical drive(s), then slide the optical drive(s) forward, out of the way. NOTE: It is not necessary to disconnect the optical drive cables unless you intend to fully remove the optical drive(s) from the computer. For information on how to remove an optical drive, see "Removing an Optical Drive" on page 123. 128 Removing and Installing Parts