Figure 8.2 Servicing Secondary Filters
6. Replacement is the reverse of the procedure. Ensure that the drain is closed before opening valves A and B.
Ensure that additional fluid is available to replenish the makeup reservoir if necessary.
When opening the valves, crack open valve A initially until all contained air is purged out of the vilter housing through the
automatic air vent. Then fully open valve A and then open valve B. When valve A is opened, the loss of system pressure should
automatically start the fill pump P3 to fill the filter housing and bring the system back to operating pressure.
7.1 Unit Draining
Figure 8.3 Drain Valve
74 Proprietary and Confidential ©2025 Vertiv Group Corp. 7 Secondary Filter Service (if Fitted)
Vertiv™ CoolChip CDU 600 Operation and Maintenance Guide
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