Lenovo NeXtScale n1200, Installation And Service Manual

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Rack return
Rack supply
D
Figure 25. Quick connect socket from the drain hose tool to the top of the supply side manifold connection
Step 9. Continue to each chassis from the top chassis to the bottom chassis by reaching into each chassis
Location C and Location D quick connects and allow for a steady stream of water to drain. Repeat
drain process until all positions in the entire rack have been drained.
Step 10. Re-attach the hose which should be put onto the manifold that has the section to be replaced to
the top of the manifold before moving back around to the front of the rack.
Step 11. At this point, the manifold should be properly drained to allow for service. Since there still can be
some water left in the manifold, prepare work area with absorbent cloths to collect any water that
may drain out.
Step 12. Determine which manifold needs to be replaced.
Step 13. Move to the rear of the rack. Remove manifold retention bracket that is retaining the manifold (top
chassis position only).
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Lenovo NeXtScale nx360 M5 water-cooled technology tray Lenovo NeXtScale n1200 Enclosure Installation and Service Guide