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 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.

• The task in this section requires two or more people.

Procedure

1. Make sure all trays 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 41 mm wrench

3. Install the manifold.
   1. Align the drip sensor tray with the manifold and slide it into the place.
   2. Align the manifold with the enclosure and slide it into the place.
   3. For each manifold, 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. Continue to connect the other manifold sections working from the top down to the bottom.
5. Install manifold retention bracket that is retaining the manifold (top enclosure position only).
   Figure 4. Retention bracket installation
   
   
6. Remove the red quick connect plug covers from the tops of each manifold, and on the rear of each manifold section.
   Figure 5. Quick connect plug covers removal
   
   
7. Connect the hose assembly (supplied to customer installation site) to the top quick connect at Location A (top of the rack). Make sure the hose still remains in the bucket with the valve closed (valve handle perpendicular to the hose).
   Figure 6. Hose assembly to top quick connect
   
   
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
   
   

   1 Rack return

   2 Facility supply

9. Slowly open the hose valve to allow air to flow out of the hose. Close the hose valve once 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).
   Figure 8. Hose assembly at Location A
   
   
10. Disconnect the hose assembly from Location A and connect it to Location B. Slowly open the hose valve to allow air to flow out of the hose. Close the hose valve once a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass.
    Figure 9. Hose assembly at Location B
    
    
11. Go 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
    
    

    1 Rack supply

    2 Facility supply

12. Go to the back of the rack, make sure that the hose is still connected to Location B. Slowly open the hose valve to allow air to flow out of the hose. Close the hose valve once a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass.
    Figure 11. Hose assembly at Location B
    
    
13. Disconnect the hose assembly from Location B and connect it to Location A. Slowly open the hose valve to allow air to flow out of the hose. Close the hose valve once a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass.
    Figure 12. Hose assembly at Location A
    
    
14. Disconnect the hose assembly from Location A and connect it to Location C. Slowly open the hose valve to allow air to flow out of the hose. Close the hose valve once a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass (it may take approximately ten to fifteen seconds).
    Figure 13. Hose assembly at Location C
    
    
15. Disconnect the hose assembly from Location C and connect it to Location D. Slowly open the hose valve to allow air to flow out of the hose. Close the hose valve once a steady stream of water flows into the bucket or there are minimal bubbles in the sight-glass.
    Figure 14. Hose assembly at Location D
    
    
16. Starting from the top enclosure to the bottom enclosure, continue to each enclosure by reaching into each enclosure Location C and Location D quick connects to allow a steady stream of water to flow. Repeat the filling process until all Location C and Location D in the entire rack have been filled.
    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.

    • There should be minimal air present in the sight glass.

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
    
    

    1 Rack supply	3 Facility return
    2 Facility supply	4 Rack return

18. Check for leaks at the rear or the rack.