Emerson XDR user manual Disconnect a Liebert XD Flex Pipe from a Liebert XD System

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Piping

6.7.6Disconnect a Liebert XD Flex Pipe from a Liebert XD System

! CAUTION

Risk of sudden discharge of pressurized refrigerant. Can cause equipment damage or injury.

Do not disconnect threaded refrigerant couplings at the module cabinet end without relieving system pressure. Reclaim any refrigerant during removal of module from system.

Tools Required

•Two adjustable wrenches with a maximum adjustment size of 2 inches

1.Close the service valve in the supply line.

2.Ensure there is airflow across the coil.

3.Wait two minutes for the refrigerant to flow out of the module.

4.Close the service valve in the return line.

5.Loosen the Liebert XD Flex Pipe coupling from the header port coupling. This requires a wrench. Refer to Figure 27.

The Liebert XD Flex Pipe coupling must be held stationary while the union nut on the coupling is being loosened.

6.Disconnect the coupling.

7.Place the protective dust cap on the port.

8.Place the protective plug back on the Liebert XD Flex Pipe.

9.Repeat Steps 5 through 7 for the remaining Liebert XD Flex Pipe.

Figure 29 Piping mains without Liebert XD Flex Pipe

Dust caps attach here

27

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Contents Liebert XDR Fluorinated Greenhouse Gas Requirements-European Union Important Safety GuidelinesTable of Contents Specifications Installation Checklist and System Fill for StartupFigures Page Component Locations and Model Number Nomenclature Example XDR20B1RInstallation Considerations Pre-Installation ChecksReferences Packing ListChecking and Unpacking Product/System DescriptionModule Handling Recyclable PackagingUnpacking the Module Removing packaging Remove Liebert XDR from pallet Removing the Liebert XDR from the PalletMove the Liebert XDR Liebert XDR DimensionsOverall dimensions with one-shot coupling pre-charged Overall dimensions with removable coupling Determining Placement in the Conditioned SpaceAirflow Generic airflow diagramMounting the Liebert XDR on the Rack-Mounting Kit Installing the Rack-Mounting Kit onto the RackDoor Safety Catch European Union Fluorinated Greenhouse Gas Requirements System Connection ConfigurationInsulation Connection Methods and PointsHard-Piped Connection Sizes Brazing PreparationsRecommended Piping Size Refer to for details Leak-Checking and Evacuation Header SystemDegree Connection TOP View Male coupling on Liebert XD cooling module Tools RequiredHex body, union nut on one-shot coupling Connection Methods-Removable Couplings Removable couplings Return Main Supply Main Oil rings on header and Liebert XD Flex Pipe connectors Do not Overtighten Piping mains without Liebert XD Flex Pipe Disconnect a Liebert XD Flex Pipe from a Liebert XD SystemRemoving the Liebert XDR from a Cabinet Disconnecting the Liebert XD Flex Pipe from the Liebert XDRCharging with Refrigerant Checklist for Proper InstallationStarting the Liebert XD System Fluorinated Greenhouse Gas Requirements MaintenanceSpecifications Page Ne t