Remove the water loop in SD650 V2 tray

Use this information to remove the water loop in SD650 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 (14x Phillips #1 screws).
      Figure 1. Cross brace removal
      
      
   4. Remove all DIMM combs (see Remove a DIMM comb).
   5. Remove DIMMs from both nodes (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).
   8. Remove PCIe riser assemblies from the node if applicable (see Remove a PCIe adapter).
2. Remove all Torx T10 screw (4x Torx T10 screw for two nodes); then, slide two VR clamp plates out of the nodes.
   Figure 2. VR clamp plate removal
   
   
3. Remove water loop screws (26x 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 3. Water loop screws removal
   
   
4. Remove the following screws to loosen the quick connect.

   • Eight Torx T10 screws to loosen the quick connect.

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

   Figure 4. Screws removal
   
   
5. Orient two water loop carriers with the M.2 backplane guide pins; then, gently put two water loop carriers down and ensure they are seated firmly on the water loop.
   Figure 5. Water loop carrier installation
   
   
6. Tighten water loop carrier screws (24x Phillips #2 screws for two nodes).
   Figure 6. Water loop carrier screws installation
   
   
7. Loosen processors properly.
   1. ❶ Fully loosen all Torx T30 captive screws (16x Torx T30 captive screws for two nodes) on cold plates with a general screwdriver until they stop, following 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 all anti-tilt wire bails (16x anti-tilt wire bails for two nodes) inwards to the unlocked position.
      Note

      The following illustration shows screw locations for one node. The screw locations are identical for two nodes.

      Figure 7. Loosening Torx T30 captive screws
      
      
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 8. Folding the water loop
   
   
9. Fasten two captive thumbscrews to secure water loop carriers to each other.
   Figure 9. 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 10. Water loop removal