Vertiv CoolPhase CDU - Fill the Secondary Row and Rack Manifold (IT Equipment)

7.4.2 Fill the Secondary Row and Rack Manifold (IT equipment)
1. Locate the fill connection shown in Figure 7.3 on page73 in the Vertiv™ CoolPhase CDU module. Note that
each CoolPhase CDU module has its own bladder tank, so on multiple CoolPhase CDU systems you may fill at
one or more points, according to the CW piping system design.
2. Connect the fill water or glycol source to the desired fill valve. See Figure 7.3 on page73 .
3. Open high point vents where appropriate. See Figure 7.4 on page74 .
4. Turn on the water or glycol fill source. Allow it to run until all of the air is purged from the hose connected to the
high point vents. Failure to properly purge the air will result in pump cavitation and premature pump failure.
5. Close air vents when purged or return auto air vents to specified position (open/closed) according to field piping
design. Allow water fill pressures to stabilize. The unit fill volume is listed in Table 7.3 on page68 .
6. With the unit in manual mode, turn pump(s) on for a few seconds at a time initially, resting for a minute or so
between cycles, to get trapped air to move to the high points. Add additional fluids while pump is running as
needed to get a stagnant pressure of 20 psig.
7. Fill the secondary row and rack manifold with IT equipment.
8. Run the system.
7 Secondary Fluid Circuit
Requirements
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Vertiv™ CoolPhase CDU Installer/User Guide