Liebert XDC user manual Fluorinated Greenhouse Gas Requirements, Air Cooled Condenser, Maintenance

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Maintenance

8.0MAINTENANCE

The Liebert XD system components require little maintenance when proper fluid levels are main- tained and proper startup and operation procedures are followed. The following tasks should be per- formed at the intervals stated:

1.Check sight glass level of receiver on all circuits every 4-6 weeks. During normal operation, the level should be at or above the first sight glass.

2.Check system for leaks every 4-6 weeks

8.1Fluorinated Greenhouse Gas Requirements

Stationary air conditioning, refrigeration, heat pump equipments and stationary fire protection sys- tems in the European Community market and operating with fluorinated greenhouse gases (f-gas), such as R407C, R134a, R410A, must comply with the F-Gas Regulation: (EC) No. 842/2006 (F-gas). The regulation prohibits, among other actions, venting fluorinated greenhouse gases to the atmo- sphere.

The F-Gas Regulation requires operators to use use all measures that are technically feasible and do not entail disproportionate cost to prevent leakage of these gases, to test for leakage regularly and to recover f-gas during equipment service and maintenance and before disposing of equipment.

Refer to the full regulation for additional details.

8.2Air Cooled Condenser

Restricted airflow through the condenser coil will reduce the operating efficiency of the unit and can result in high compressor head pressure and loss of cooling.

Clean the condenser coil of all debris that will inhibit air flow. This can be done with compressed air or commercial coil cleaner. Check for bent or damaged coil fins and repair as necessary. In winter, do not permit snow to accumulate around the sides or underneath the condenser.

Check all refrigerant lines and capillaries for vibration isolation. Support as necessary. Visually inspect all refrigerant lines for signs of oil leaks.

Figure 33 Outdoor fan/condenser configuration

Lee-Temp Heater Pad

Connection Boxes

Secure each leg to condenser frame at all points shown using hardware provided

Fan Motor M1

Inverted Traps by Others

Hot Gas Line

Electric Service

Supplied by Others

Liquid Line

Fan Motor FS

Inverted Traps by Others

Hot Gas Line

Electric Service

Supplied by Others

Liquid Line

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Contents Liebert XDC Voltage-phase-frequency Density system = 380/415-3ph-50Hz General Safety GuidelinesExample XDC160AA Table of Contents Alarm Descriptions and Solutions SpecificationsFigures Tables Equipment Handling General Product InformationEquipment Inspection Product DescriptionHandling With Skid Removal of SkidRemove tie-down brackets Removing Piano Jacks Liebert XDC dimensions, weightMechanical Considerations Positioning the Liebert XDCPiping locations Liebert XDC piping connection sizesPlacing the Liebert XDC on a Floor Stand Detail a Liebert XDC water/glycol piping connection SizesTOP View of Floor Stand Dimensions and clearances for Liebert XDC on floor stand Positioning the Liebert XDC with Floor StandConnecting High-Voltage Cables High Voltage ConnectionsElectrical enclosure knockout locations for field wiring Contactors Extra Low Voltage Connections Liebert XDC heat rejection connection pointsField Connections-Optional for All Units Field Connections-All UnitsField Connections-Air Cooled Units only Extra Low Voltage field connections points Liebert XDC Interconnection With Liebert XD Cooling Module European Union Fluorinated Greenhouse Gas RequirementsRecommended Pipe Size Supply, return pipe sizes for Liebert XD refrigerant loopPiping Installation-R-134a Pumped Circuit Piping Installation MethodPiping Mains Bypass flow controllers for a Liebert XDC-based system Bypass Flow ControllersRequired Number Insulation Evacuation and Leak Check-R-134a Pumped CircuitLiebert XDP Liebert XDC Filling the Pumped Circuit-R-134a System refrigerant charge for the supply and return mainsCalculating refrigerant charge-example Calculating Refrigerant Charge-ExampleWorksheet to calculate refrigerant charge Install Double Discharge Risers Double discharge riser layoutPage Installation data-Lee-Temp, one-circuit, four-fan model See for details on piping connections Piping Schematic General arrangement air cooled Liebert XDC Lee-Temp Control Recommended refrigerant line sizes, DX R-407c, OD copperRecommended refrigerant line sizes for DCSL616 For mounting instructions, refer to Figure Lee-Temp Piping Lee-Temp Control Materials SuppliedOutdoor air condenser charge-R-407c Filling the Direct Expansion DX Circuit-R-407cIndoor unit refrigerant charge-R-407c Indoor water/glycol cooled module R-407C refrigerant chargeInstallation Checklist Liebert XDC pump light indicator Checklist for Liebert XDC StartupIndicator Lights Description Green Red Refrigerant Type Compressor oil typesCompressor Type 407c Liebert XDC system is now ready to be turned on Display Feature OverviewMicroprocessor Control User interface keypad functionsControls Feature OverviewViewing or Changing Settings Main MenuMIN Temp SP Setpoint functions, default values and allowable rangesSetpoints HI AIR TempStatus Active AlarmsAlarm History TimeDegrees Setup OperationRestart Pump Start TDLead Tandem Pump OFF TDLead Pump DipswchSetpt Password Setup PasswordAlarm Enable Calibrate SensorsCOM Alarm Enable Alarm Time DelayCustom Alarms Diagnostics Custom TextAlarm Descriptions Alarm Descriptions and SolutionsRed and Green Lamp Indicators Alarm Time Delays Enable / Disable AlarmsView Active Alarms View Alarm History System Shutdown CausesTroubleshooting Liebert XDC troubleshootingToo warm Fluorinated Greenhouse Gas Requirements MaintenanceAir Cooled Condenser Water/Glycol Floor Stand Condenser Testing the Water Regulating Valve FunctionGlycol Solution Maintenance Shell and Tube CondensersSpecifications Liebert XDC specificationsPiping Connections Performance DataHeat Rejection Equipment Performance Data204 Page Ti n Ne tIti That