Remove the water loop

Use this information to remove the water loop in the SD650 V3 tray.

About this task

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

• Turn off the corresponding DWC tray that you are going to perform the task on.

• Disconnect all external cables from the enclosure.

• Use extra force to disconnect QSFP cables if they are connected to the solution.

• To avoid damaging the water loop, always use the water loop carrier when removing, installing or folding the water loop.

Note

Ensure you have SD650 V3 Neptune DWC Waterloop Service Kit in hand to install components.

Prepare the following screwdrivers to ensure you can install and remove corresponding screws properly.

Screwdriver Type	Screw Type
Torx T10 head screwdriver	Torx T10 screw
Torx T30 head screwdriver	Torx T30 screw
Phillips #1 head screwdriver	Phillips #1 screw
Phillips #2 head screwdriver	Phillips #2 screw

Watch the procedure

• A video of this procedure is available at YouTube.

Procedure

1. Make preparations for this task.
   1. Remove the tray from the enclosure. See Remove a DWC tray from the enclosure.
   2. Remove the tray cover. See Remove the tray cover.
   3. Remove the cross braces. See Remove the cross braces.
   4. Remove the DIMM comb. See Remove a DIMM comb.
   5. Remove memory modules. See Remove a memory module.
   6. Remove the M.2 backplane assembly. See Remove the M.2 backplane assembly.
      Note

      The M.2 backplane cold plate needs to be removed as well.
   7. Remove the drive cage. See Remove a drive cage assembly.
   8. Remove the PCIe riser assembly. Depending on your configuration, see Remove a PCIe riser assembly (ConnectX-6), PCIe riser assembly replacement (ConnectX-7 NDR 200), or Remove a PCIe riser assembly (ConnectX-7 NDR 400).
2. Remove two Torx T10 screws (per node); then, remove the VR (voltage regulator) clamp plate out of the node.
   Figure 1. VR clamp plate removal
   
   
3. Remove the following screws to loosen the quick connect.

   • Four Torx T10 screws to loosen the quick connect.

   • Ten Torx T10 screws on the rear of the node.

   Figure 2. Quick connect screw removal
   
   
4. Remove water loop screws (18x Torx T10 screws for two nodes) with a torque screwdriver set to the proper torque.
   Note

   For reference, the torque required for the screws to be fully tightened/removed is 0.5-0.6 newton-meters, 4.5-5.5 inch-pounds.

   Figure 3. Water loop screw removal
   
   
5. Orient two water loop carriers with the guide pins; then, gently put the two water loop carriers down and ensure they are seated firmly on the water loop.
   Figure 4. Water loop carrier installation
   
   
6. Tighten water loop carrier screws (24x Phillips #2 screws for two nodes).
   Figure 5. Water loop carrier screws installation
   
   
7. Loosen processors properly.
   1. Fully loosen all Torx T30 captive screws (16x Torx T30 captive screws for two nodes) on cold plates in the removal sequence shown on the cold plate label (with a torque screwdriver set to the proper torque).
      Note

      For reference, the torque required for the screws to be fully tightened/removed is 0.9-1.3 newton-meters, 8-12 inch-pounds.

      Attention

      To prevent damage to components, make sure that you follow the indicated loosening sequence.
   2. Rotate all anti-tilt wire bails (16x anti-tilt wire bails for two nodes) inwards to the unlocked position.

      Figure 6. Loosening Torx T30 captive screws
      
      
8. Carefully rotate the water loop so one half is sitting on top of the other half.
   Figure 7. Folding the water loop
   
   
9. Fasten two captive thumbscrews to secure water loop carriers to each other.
   Figure 8. Tightening captive thumbscrews
   
   
10. Remove the processor from the retainer. This process differs by processor SKU. Check the processor SKU and follow the applicable procedure.
    Note

    Do not touch the contacts on the processor.

    For non Intel® Xeon® CPU Max processor

    1. Lift the handle to release the processor from the retainer.

    2. Carefully hold the processor by its edges; then, lift the processor from the retainer.

       Figure 9. Processor removal
       
       

    For Intel® Xeon® CPU Max processor

    1. Insert a flat head screwdriver into the TIM breaking cam on the retainer; then, slightly rotate the flat head screwdriver to release the processor from the retainer.

    2. Carefully hold the processor by its edges; then, lift the processor from the retainer.

       Figure 10. Processor removal (Intel® Xeon® CPU Max processor)
       
       

       1 TIM breaking cam

11. Without putting the processor down, wipe the thermal grease from the top of the processor with an alcohol cleaning pad; then, place the processor on a static protective surface with the processor-contact side up.
12. Remove the processor retainer from the underside of the cold plate.
    Note

    The processor retainer will be discarded and replaced with a new one.
    1. Carefully release the retaining clips from the cold plate.
    2. Lift the retainer from the cold plate.
    Figure 11. Processor retainer removal
    
    
13. Wipe the thermal grease from the bottom of the cold plate with an alcohol cleaning pad.
14. Carefully lift the water loop up off the system board and out of the node.
    Figure 12. Water loop removal
    
    
15. Flip the water loop, and place it on a flat surface. Repeat Step 10 to Step 13 to remove processors from the other side of the water loop.

After you finish

If you are instructed to return the component or optional device, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.