Liebert XDP user manual Pump Wait TD, Pump OFF TD, Lead Pump, Dpswch

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Microprocessor Control

PUMP WAIT TD

The user may set the pump wait time delay to prevent the pump from continuing to run when refrig- erant is not flowing. When the control detects a loss of refrigerant flow, the pump continues operating for the period specified in the PUMPWAIT TD.

If refrigerant flow resumes during the specified interval, the pump will continue operating. If the wait time expires and refrigerant flow has not resumed, the pump will shut down, activate an alarm for loss of flow to the pump and the second pump will be started.

To make changes or review the current setting, see 4.3.1 - Viewing or Changing Settings.

PUMP OFF TD

The user can set the amount of time a pump will remain off when refrigerant flow is interrupted or stops. After the time delay has expired, the control will try to start a pump—unless there is a problem with the building chilled water system or if the refrigerant temperature sensor has failed.

To make changes or review the current setting, see 4.3.1 - Viewing or Changing Settings.

LEAD PUMP

The user can select which pump is the lead pump, either pump #1 or pump #2. For example, if pump #1 is selected, it will be the primary pump and will switch to the standby pump (the pump that is not selected) on a loss of flow after a programmed time delay has elapsed.

To make changes or review the current setting, see 4.3.1 - Viewing or Changing Settings.

DPSWCH

This menu displays the status of the eight-position DIP switch on the Liebert XDP control board. If a selector is beside the numeral “1,” the switch is On. If a selector is beside the numeral “0,” the switch is Off. For proper operation, DIP switches 1-7 MUST be off and DIP switch 8 MUST be on.

Table 15 Liebert XDP DIP switches and factory settings

DIP Switch	Factory Setting

1	Off

2	Off

3	Off

4	Off

5	Off

6	Off

7	Off

8	On = Liebert XDP; Off = Liebert XDWP

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Contents Liebert XDP Fluorinated Greenhouse Gas Requirements-European Union General Safety GuidelinesExample XDP160A Pumping Place holder Revision Unit Redundancy Level LiebertTable of Contents Alarm Descriptions and Solutions SpecificationsFigures Page Product Description General Product InformationEquipment Inspection Product/System DescriptionEquipment Handling Handling With SkidRemoval from Skid Removing pallet boards for piano jack insertion Liebert XDP strapped to piano jackRemoving Piano Jacks Slide this runner away From the Liebert XDPLiebert XDP dimensions Mechanical ConsiderationsPositioning the Liebert XDP Unit piping outlet connection sizes, inches, OD Cu Model Pipe Connection Point 50/60 HzConnecting High-Voltage Cables Electrical Information High Voltage ConnectionsElectrical enclosure knockout locations for field wiring Extra Low Voltage ELV Connections High voltage connections-50HzField Connections-All Units Field Connections-Optional for All UnitsPiping European Union Fluorinated Greenhouse Gas RequirementsConnection Sizes Recommended Pipe SizeBypass Flow Controller Piping Installation MethodLiebert XDP Interconnection with Liebert XD Cooling Modules Bypass flow controllers for a Liebert XDP-based systemBypass flow controller details, dimensions Bypass flow controller arrangementPiping Mains Piping Installation MethodPiping Details-Shut-Off/Isolation Valves Evacuation and Leak CheckChecklist for Proper Installation Checklist for Liebert XDP Startup Liebert XDP pump light indicator-208V and 400V unitsIndicator Lights Description Green Red Filling the Pumped Circuit-R-134a System R-134a liquid levelSystem refrigerant charge for the supply and return mains Return Line Diameter 5/8Return Line Diameter Worksheet to calculate refrigerant charge Calculating Refrigerant Charge-ExampleCalculating refrigerant charge-example Total 293Display Feature OverviewMicroprocessor Control User interface keypad functionsControls Feature OverviewViewing or Changing Settings Main MenuSetpoints Active AlarmsAlarm History MIN Temp SPDegrees Setup OperationRestart Time Delay Pump Start TDPump OFF TD Liebert XDP DIP switches and factory settingsPump Wait TD Lead PumpPassword Security-SETPT Password and Service Password Change Password-SETPT PasswordValve Time Alarm Time Delay Change Password-SERVICE PasswordAlarm Enable COM Alarm EnableCustom Alarms DiagnosticsCustom Text Alarm Descriptions Alarm Descriptions and SolutionsRed and Green Lamp Indicators Alter Alarm SettingsEnable or Disable Alarms System Shutdown Causes Troubleshooting Troubleshooting the XDPMaintenance Fluorinated Greenhouse Gas RequirementsSpecifications Liebert XDP160 specificationsTi n Ne tIti That