Riser Assembly Installation Into Liquid-Cooled Modules - Intel D50DNP Series Integration And Service Manual

1. Ensure that the screw holes of the riser assembly are aligned with the mounting holes of the module.
2. Using Phillips screwdriver #2 tighten the captive screw at the back of the riser assembly to 5 in-lb.
(see Letter D)
3. Using Phillips screwdriver #1 install two screws to secure the riser assembly to the front of the
module. Tighten to 5 in-lb. (see Letter E).
3.4.6

Riser Assembly Installation into Liquid-Cooled Modules

The liquid-cooled modules D50DNP1MHCPLC and D50DNP1MFALLC use the same riser assemblies that are
used for air-cooled modules. The procedures describing riser assmply installation into an air-cooled
modules (Section 3.4.4 or Section 3.4.5) should be followed for liquid-cooled modules. But there is one
important difference that customers must observe.
Three thin thermal interface material strips are attached to the conduction plates around each riser card slot.
These strips conduct the heat from the M.2 SSD via the cold plate and riser bracket on the riser card.
These strips are made from a sticky thermal interface material. They stick to both surfaces they
contact: to the cooling loop conduction plate on one side and to the M.2 SSD cold plate and riser
bracket on another side. These thin strips can be easily damaged and/or displaced when a riser
assembly is removed. A user may not notice that a strip is displaced and is crossing the riser slot.
When the riser assembly is being installed, the displaced thermal pad will be jammed into the riser
slot. This will make the slot inoperable. The server board replacement will be required to restore the
system.
Before installing a riser assembly into a liquid-cooled module, make sure that these strips are attached to the
conduction plate in their designated places and do not cross the riser slot.
Important note: Three thin TIM strips are attached to the conduction plates around each riser card slot.
Make sure that these strips are attached to the conduction plate in their designated places and do not cross
the riser slot before installing the riser assembly.
70
Intel® Server D50DNP Family Integration and Service Guide