Install the manifold

Use this information to install the manifold.

About this task

CAUTION

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

S002

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

CAUTION

Eye protection should be worn for this procedure.

Attention

• Read the following sections to ensure that you work safely.

  • Installation Guidelines

  • Safety inspection checklist

• 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.

Procedure

1. Make sure the DWC tray(s) are removed from the enclosure (see Remove a DWC tray from the enclosure).
2. Install new manifold section into the manifold and connect couplings.
   Figure 1. Manifold disassemble
   
   

   Table 1. Manifold disassemble

   1 41mm wrench

3. Install the manifold.
   1. ❶ Align the drip sensor tray with the manifold and slide it into the place.
   2. ❷ Align the manifold with the enclosure and slide it into the place.
   3. ❸ Tighten four screws (using the screwdriver contained in the manifold repair kit) between manifold bracket and enclosure.
      Figure 2. Manifold installation
      
      

      Figure 3. Manifold screw locations
      
      

      Table 2. Manifold screw locations

      1 Screws

      2 Manifold

4. Starting from the top, connect the manifold bracket for the top manifold section into the top enclosure.
5. Continue to connect the other manifold sections working from the top down to the bottom.
6. Reinstall all drip sensor assemblies into enclosure.
   Figure 4. Drip sensor assembly installation
   
   

   Figure 5. Drip sensor assembly
   
   

   Table 3. Drip sensor assembly

   1 Connector

   2 Latch

7. For the manifold water fill/refill process, at the rear of the rack, connect the hose assembly (supplied to customer installation site) to the top quick connect at the top of the rack (location A). Make sure the hose still remains in the bucket with the valve closed (valve handle perpendicular to the hose).
   Note

   The red plug cover will need to be removed at all positions first in order to plug to the quick connects.

   Figure 6. Hose assembly to top quick connect connection
   
   
8. At the front of the rack, connect the facility supply hose to the rack return hose. Partially open the supply hose, about 1/4 of the way.
   Note

   Do not fully open the facility ball valve or you will reduce your ability to control the flow as you fill the rack.

   Figure 7. Facility supply hose to rack return hose connection
   
   
9. At the back of the rack, slowly open the valve on the hose part of the way allowing air to flow out of the hose. Allow this to take place until a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass. It may take approximately one to two minutes for air bubbles to clear the hose.
   Figure 8. Hose valve opening
   
   
10. Close the valve on the hose. Then disconnect the hose assembly from Location A and move to Location B. Slowly open the valve and allow this to stay in place until a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass. Close the valve on the hose again.
    Figure 9. Hose assembly movement
    
    
11. Go back to the front of the rack, disconnect the facility supply hose from the rack return hose and connect the facility supply hose to the rack supply hose.
    Figure 10. Facility supply hose to the rack supply hose connection
    
    
12. Again, at the back of the rack, ensure the hose still remains connected to Location B. Open the valve on the hose and leave in place until a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass.
    Figure 11. Hose assembly movement
    
    
13. Close the valve on the hose. Then remove hose assembly from Location B and move to Location A. Open the valve on the hose and allow this to stay in place until a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass.
    Figure 12. Hose valve opening
    
    
14. Close the valve on the hose. Disconnect and move to Location C and open the valve slowly. Leave in place until a steady stream of water flows or minimal bubbles are in the sight-glass. Approximate time 10-15 seconds.
    Note

    • Top position EMC shields on all enclosure positions will need to be removed in order to access the quick connects.
    • The red plug covers will need to be removed first in order to access the quick connects.

    Figure 13. Hose assembly movement
    
    
15. Close the valve on the hose. Disconnect and move the hose to Location D and repeat the process down the full rack ensuring each enclosure has minimal air bubbles in the sight glass.
    Figure 14. Hose assembly movement
    
    
16. Continue to each enclosure from the top enclosure to the bottom enclosure by reaching into each enclosure Location C and Location D quick connects and allow for a steady stream of water to flow. There should be minimal air present in the sight glass.
    Note

    Be sure to always close the valve on the hose before disconnecting it from one of the enclosure locations as you work your way down the rack.
17. Once completed, go back to the front and connect the facility return hose to the rack return hose. Fully open all connections on both the supply and return side. The manifold should be completely filled.
    Figure 15. Facility return hose to the rack return hose connection
    
    
18. Check for leaks at the rear or the rack.
19. Install the SMM2 support bracket.
    Figure 16. SMM2 support bracket installation
    
    
20. Reinstall the SMM2.
    Figure 17. SMM2 installation
    
    
21. Reinstall all EMC shields.
    Figure 18. EMC shields installation
    
    

    Figure 19. EMC shields installation
    
    

    Figure 20. Retention bracket installation