Remove the water loop in SD650-N V2 tray

Use this information to remove the water loop in SD650-N V2 tray.

Procedure

1. Make preparations for this task.
   1. Remove the tray (see Remove a DWC tray from the enclosure).
      Attention

      For safety, use the lift tool to remove the tray from the rack.

   2. Remove the tray cover (see Remove the tray cover).
   3. Remove the front and the rear cross braces (11x Phillips #1 screws).
      Figure 1. Cross brace removal
      
      
   4. Remove all DIMM combs (see Remove a DIMM comb).
   5. Remove DIMMs from the right node (see Remove a memory module).
   6. Remove M.2 Backplanes from the node (see Remove the M.2 backplane).
   7. Remove drive cage assemblies from the node if applicable (see Remove a drive cage assembly and Remove the drive from the GPU node).
   8. Remove PCIe riser assemblies from the node if applicable (see Remove a PCIe adapter).
   9. Remove the front and the rear cross braces (11x Phillips #1 screws).
      Figure 2. Cross brace removal
      
      
   10. See Cable removal order to disconnect cables according to your configuration.
   11. Disconnect GPU power cable.
       Figure 3. GPU power cable removal
       
       
   12. Remove the clamp plate or the drive depending on your configuration.

       • Clamp plate removal: Remove the two screws to remove the clamp plate.

         Figure 4. Clamp plate removal
         
         

       • Drive removal: see Install the drive in the GPU node.

2. Remove water loop screws (19x Torx T10 screws for two nodes) with a torque screwdriver sets 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 5. Water loop screws removal
   
   
3. Remove GPU cold plate screws (16x Phillips #1 screws) with a torque screwdriver sets to the proper torque.
   Note

   For reference, the torque required for the screws to be fully tightened/removed is 0.34-046 newton-meters, 3-4 inch-pounds.

   Figure 6. GPU cold plate screws removal
   
   
4. Remove the following screws to loosen the quick connect.

   • Eight Torx T10 screws to loosen the quick connect.

   • Two Phillips #1 screws on the rear of the node.

   Figure 7. Screws removal
   
   
5. Loosen processors properly.
   1. ❶ Fully loosen eight Torx T30 captive screws on cold plates with a general screwdriver until they stop in the removal sequence shown on the cold plate label.
      Note

      For reference, the torque required for the screws to be fully tightened/removed is 1.1-1.15 newton-meters, 9.8-10.2 inch-pounds.

      Attention

      To prevent damage to components, make sure that you follow the indicated loosening sequence.
   2. ❷ Rotate eight anti-tilt wire bails inwards to the unlocked position.
      Figure 8. Loosening Torx T30 captive screws
      
      
6. Orient two water loop carriers with the guide pins; then, gently put two water loop carriers down and ensure they are seated firmly on the water loop.
   Figure 9. Water loop carrier installation
   
   
7. Tighten water loop carrier screws (27x Phillips #2 screws for two nodes).
   Figure 10. Water loop carrier screws installation
   
   
8. Fold the water loop.

   1. ❶ Carefully unhook the quick connect and slide it out of the opening in the rear of the tray; then, lift the water loop up off the system board.

   2. ❷ Carefully rotate the water loop so one half is sitting on top of the other half.

   Figure 11. Folding the water loop
   
   
9. Fasten two captive thumbscrews to secure water loop carriers to each other.
   Figure 12. Tightening captive thumbscrews
   
   
10. Remove the water loop.
    1. Carefully lift the water loop up off the system board.
    2. Unhook the quick connect from the four alignment posts and slide the quick connect out of the opening in the rear of the tray.
    3. Lift the water loop out of the node.
    Figure 13. Water loop removal