IBM Power System S822LC Manual page 198

Figure 208. Removing the manifold
7. Drain the remaining water in the manifold by completing the following steps:
Note: Two people are needed to properly drain the manifold.
a. Have a bucket ready to collect the water of at least 2 gallons.
b. Hold the manifold upright, with the hoses facing down.
c. Take one of the manifold quick connect valves and hold it over the bucket.
d. To open the ball valve, press the pin on the face of the fitting, then press the pin on the lever and
turn the lever 90 degrees.
Figure 209. Opening the ball valve
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Power Systems: Servicing the IBM Power System S822LC (8335-GTB)