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Remove the manifold

Use this information to remove the manifold.

About this task

Required tools
  • Extended PH2 screwdriver from FRU for screw driver

  • SMM3 MANI conduction plate gap pad, if installing a new lower manifold

  • SMM3 MANI conduction plate , if replacing the MANI conduction plate
CAUTION

The water might cause irritation to the skin and eyes. Avoid direct contact with the lubricant.

S002
disconnect all power
CAUTION
The power-control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device. The device also might have more than one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
S038
Use eye protection
CAUTION
Eye protection should be worn for this procedure.
S040
use protective gloves
CAUTION
Protective gloves should be worn for this procedure.
S042
Danger
DANGER
danger
Risk of electric shock due to water or a water solution which is present in this product. Avoid working on or near energized equipment with wet hands or when spilled water is present.
Attention

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

  • Ensure proper handling procedures are followed when working with any chemically treated water used in the compute rack cooling system. Ensure that material safety data sheets (MSDS) and safety information are provided by the water chemical treatment supplier and that proper personal protective equipment (PPE) is available as recommended by the water chemical treatment supplier. Protective gloves and eyewear may be recommended as a precaution.

  • When removing or installing the manifold, hold the manifold by the sections specified in the illustration below.
    Figure 1. Manifold touching points

Watch the procedure
  • A video of this procedure is available at YouTube.

Procedure

  1. Make preparations for this task.
    1. Disconnect power cords. Remove the power cords from the enclosure.
    2. Remove the blank filler. See Remove the blank filler.
    3. Remove the SMM3. See Remove the SMM3.
    4. Remove the PCS. See Remove a Power Conversion Station (PCS).
    5. Remove all Power Conversion Station (PCS) cages. See Remove a Power Conversion Station (PCS) cage.
    6. Keep at least one compute tray installed to complete fluid circuit between supply and return manifold.
  2. Complete manifold removal following the sequence: Perform manifolds draining → Undock tray from enclosure → Remove the manifolds.

Perform manifolds draining​

  1. Close the valves on the manifold and hoses.
    1. Press the button on the ball valve switch.
    2. Rotate the switch to close the valves as illustrated below.
    Figure 2. Closing the valves of manifolds and hoses

  2. Disconnect the facility return hose and supply hose from the upper and lower manifolds
    Figure 3. Disconnecting facility return and supply hoses from manifolds

  3. Close the valve of the upper bleeder.
    Figure 4. Closing the valve of the upper bleeder

  4. Remove the cover from bleeder port on the upper manifold. Then, connect the upper bleeder to the bleeder port.
    Figure 5. Connecting upper bleeder to the bleeder port on the upper manifold

  5. Place the end of the upper bleeder hose inside a bucket.
    Figure 6. Placing the upper bleeder hose end inside a bucket

  6. Slowly open the valve of the upper bleeder to allow a steady stream of water to drain.
    Figure 7. Opening the valve of the upper bleeder

  7. Open the valve of the bleeder adapter.
    1. Press the button on the valve switch of the adapter.
    2. Rotate the switch to open the valve, as illustrated below.
    Figure 8. Opening the valve on the bleeder adapter

  8. Connect the bleeder adapter to the lower manifold.
    Figure 9. Connecting bleeder adapter to the lower manifold

  9. Close the valve of the lower bleeder.
    Figure 10. Closing the valve of the lower bleeder

  10. Connect the lower bleeder to the bleeder adapter, which is attached to the lower manifold.
    Figure 11. Connecting lower bleeder to the bleeder adapter

  11. Slowly open the valve of the lower bleeder to allow a steady stream of water to drain. Close the valve once water stops flowing.
    Figure 12. Opening the valve of lower bleeder hose

  12. Remove the following components from the enclosure.

    1. Upper bleeder

    2. Lower bleeder

    3. Lower bleeder adapter

    Figure 13. Removing components from the manifolds

Undock tray from enclosure​

Attention
After undocking the tray, wait for at least 50 minutes before proceeding to remove the manifolds.
Remove the tray from the enclosure.
  1. Press the latches on the front cam handles.
  2. Rotate the front cam handles as shown in the illustration. The tray moves out of the tray bay approximately 2 cm (0.78 inch).
    Figure 14. Opening the tray cam handles
    Tray removal
  3. Grab the cam handles and pull the DWC tray slightly out of the enclosure.
  4. Pull the tray out until you see the TOP printing on the top cover. Then, close the cam handles.
    Figure 15. Pulling the tray slightly out of the enclosure

Remove the manifolds​

Attention
After undocking the tray, wait for at least 50 minutes before proceeding to remove the manifolds.
  1. Remove the upper manifold.
    1. Loosen twelve (x12) T10 captive screws from the upper manifold with an extended screwdriver.
      Figure 16. Removing screws from upper manifold

    2. Remove the upper manifold from the enclosure.
      Figure 17. Removing the upper manifold from the enclosure

  2. Remove the lower manifold.
    1. Loosen twelve (x12) T10 captive screws from the lower manifold with an extended screwdriver.
      Figure 18. Removing screws from lower manifold

    2. Remove two PH2 screws to release the lower manifold from the enclosure.
      Figure 19. Removing screws from the lower manifold

    3. Remove the lower manifold from the enclosure.
      Figure 20. Removing the lower manifold

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.