• Keep static-sensitive parts in their static-protective packages until installation to prevent exposure to
static electricity. Handle the parts with an electrostatic-discharge wrist strap or other grounding systems.
Place the parts on a static-protective surface.
• Ensure proper handling procedures are followed when working with any chemically treated liquid used in
the rack cooling system. Ensure that material safety data sheets (MSDS) and safety information are
provided by the liquid chemical treatment supplier and that proper personal protective equipment (PPE) is
available as recommended by the liquid chemical treatment supplier. Protective gloves and eyewear may
be recommended as a precaution.
• This task requires two or more people.
Procedure
Step 1. Close both ball valves.
Figure 196. Closing ball valves
Note:
1 Manifold supply connects to facility
supply
2 Manifold return connects to facility return
a.
Press the button on the ball valve switch.
b.
Rotate the switches to close the valves as illustrated above.
Step 2. Remove the quick connect plugs to separate the NeptCore module hoses from the manifold.
Chapter 5. Hardware replacement procedures 191
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