Liebert XDC user manual View Alarm History, System Shutdown Causes

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Alarm Descriptions and Solutions

6.6View Alarm History

To view the alarm history:

1.Press the MENU key.

2.Use the up or down arrow key to move to the ALARM HISTORY menu.

3.Press the ENTER key to enter into the menu.

4.Use the up or down arrow key to move through the menu and view the alarm history.

This menu will show the most recent alarm first. This menu also will display the alarm name, alarm number and the time and date of occurrence for the last 60 alarms.

5.When finished, press the ESC key two to three times to get back to the main display.

6.7System Shutdown Causes

•Unit Is Off By Refrig Sens Fail: The control has lost its signal from the refrigerant tempera- ture sensor. The control has no way of controlling the refrigerant temperature, so the unit is shut off. Main power (disconnect switch) must be turned OFF then back ON to clear this alarm.

•Unit Is Off By Pump Short Cycle: The control was unable to get a pump started at startup or after a loss of differential pressure. The control looks at the SHORT CYCLE time delay. If it can- not establish differential pressure within that amount of time the unit is shut off. The user may set this time by changing the SHORT CYCLE alarm time delay. Main power (disconnect switch) must be turned OFF then back ON to clear this alarm.

•Unit Is Off By Low Refrig Temp: The control was unable to raise the refrigerant temperature to the calculated refrigerant temperature control point. The unit is shut off, because if the control cannot raise the refrigerant temperature to the calculated refrigerant temperature control point, there will be a possibility of water condensing on the refrigerant piping and receiving coils. Main power (disconnect switch) must be turned OFF then back ON to clear this alarm.

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Contents Liebert XDC Voltage-phase-frequency Density system = 380/415-3ph-50Hz General Safety GuidelinesExample XDC160AA Table of Contents Specifications Alarm Descriptions and SolutionsFigures Tables Product Description General Product InformationEquipment Inspection Equipment HandlingRemoval of Skid Handling With SkidRemove tie-down brackets Positioning the Liebert XDC Liebert XDC dimensions, weightMechanical Considerations Removing Piano JacksLiebert XDC piping connection sizes Piping locationsPlacing the Liebert XDC on a Floor Stand Liebert XDC water/glycol piping connection Sizes Detail aTOP View of Floor Stand Positioning the Liebert XDC with Floor Stand Dimensions and clearances for Liebert XDC on floor standHigh Voltage Connections Connecting High-Voltage CablesElectrical enclosure knockout locations for field wiring Contactors Liebert XDC heat rejection connection points Extra Low Voltage ConnectionsField Connections-Optional for All Units Field Connections-All UnitsField Connections-Air Cooled Units only Extra Low Voltage field connections points Supply, return pipe sizes for Liebert XD refrigerant loop European Union Fluorinated Greenhouse Gas RequirementsRecommended Pipe Size Liebert XDC Interconnection With Liebert XD Cooling ModulePiping 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 System refrigerant charge for the supply and return mains Filling the Pumped Circuit-R-134aCalculating refrigerant charge-example Calculating Refrigerant Charge-ExampleWorksheet to calculate refrigerant charge Double discharge riser layout Install Double Discharge RisersPage Installation data-Lee-Temp, one-circuit, four-fan model See for details on piping connections Piping Schematic Recommended refrigerant line sizes, DX R-407c, OD copper General arrangement air cooled Liebert XDC Lee-Temp ControlRecommended refrigerant line sizes for DCSL616 For mounting instructions, refer to Figure Lee-Temp Control Materials Supplied Lee-Temp PipingIndoor water/glycol cooled module R-407C refrigerant charge Filling the Direct Expansion DX Circuit-R-407cIndoor unit refrigerant charge-R-407c Outdoor air condenser charge-R-407cInstallation 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 User interface keypad functions Feature OverviewMicroprocessor Control DisplayMain Menu Feature OverviewViewing or Changing Settings ControlsHI AIR Temp Setpoint functions, default values and allowable rangesSetpoints MIN Temp SPTime Active AlarmsAlarm History StatusPump Start TD Setup OperationRestart DegreesDipswch Pump OFF TDLead Pump Lead TandemSetup Password Setpt PasswordCalibrate Sensors Alarm EnableCOM Alarm Enable Alarm Time DelayCustom Alarms Custom Text DiagnosticsAlarm Descriptions and Solutions Alarm DescriptionsRed and Green Lamp Indicators Alarm Time Delays Enable / Disable AlarmsView Active Alarms System Shutdown Causes View Alarm HistoryLiebert XDC troubleshooting TroubleshootingToo warm Fluorinated Greenhouse Gas Requirements MaintenanceAir Cooled Condenser Shell and Tube Condensers Testing the Water Regulating Valve FunctionGlycol Solution Maintenance Water/Glycol Floor Stand CondenserLiebert XDC specifications SpecificationsPerformance Data Performance DataHeat Rejection Equipment Piping Connections204 Page That Ne tIti Ti n