Connecting the water supply

You might need to connect the water supply to the Heat Exchanger. Use the procedure in this section to perform this task.

To connect the secondary-loop water supply to the Heat Exchanger, complete the following procedure:

Important: Exerting significant upward pressure on the door while connecting hoses can cause the door to release from the upper rack hinge. Be careful not to lift the door off the top hinge during these procedures. You can insert a blocking device, such as a piece of foam or metal, into the door below the top hinge during procedures that involve connecting the water supply to prevent the door from coming off its top hinge.

Open the door to a 90-degree angle.
Remove the screw 1 that is securing the hose retention plate 2 to the door.
Figure 1. Removing the hose retention plate.
If the rack cabinet is on a raised floor, remove the floor tile that the hoses will pass through. Pull the hoses up to provide slack.
Attach the water-supply hose 4 to the female coupling (on the supply manifold) 3 on the Heat Exchanger.
Figure 2. Attaching the supply hose.
1. Align the male hose coupling with the female supply-manifold coupling.
  Note: If the couplings are misaligned, it will be difficult to connect the hose.
2. Move the female collar upward.
3. Insert the male hose coupling. Exert upward pressure until the female collar moves downward and locks in place with an audible click. After the couplings are engaged but before the collar has locked into place, you can release the collar and use both hands to push the hose upward to lock the couplings.
Important: Do not connect the return hose until instructed to do so later in these instructions.

Next topic: Filling the Heat Exchanger with water