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Liebert 3000 manual Semiannual Maintenance Inspection Checklist

Models: 3000

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Semiannual Maintenance Inspection Checklist

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Liebert 3000 manual Semiannual Maintenance Inspection Checklist

Contents

Liebert Challenger Precision CoolingFor Business-Critical ContinuityPage TABLE OF CONTENTS 3.8.1 Show Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0 ALARM DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FIGURES TABLESPage 1.1.1Compressorized Systems 1.1System Descriptions1.0INTRODUCTION 1.1.2GLYCOOL Chilled Glycol Cooling Systems1.2Start-UpProcedure 2.1Basics Figure 1 Advanced microprocessor control panelCustom Alarms 1 to 4 Programmed Alarm Messages Alarms AvailableCompressor Overload Loss of Power Operation with Advanced Microprocessor Controls2.4.3Alarm History Log 2.4Status/Alarm Data2.4.1Active Alarms 2.2Status Display2.4.4Run Hours Log 2.5Setpoints/SetupTable 1 Default setpoints and ranges 2.4.5Analog Sensors2.5.2Setup System Setup OperationDIP switch settings Show DIP SwitchesSetup functions, default values and ranges Select OptionsSelect Control Type Setup AlarmsAlarm default time delays TableStandard Custom Alarm Messages Humidity HUM Control MethodCalibrate Actuator Analog SetupSet Status Display Test Outputs 2.5.3Run DiagnosticsShow Inputs Test Control Board2.7Status Display 2.5.4Change Passwords2.6Date and Time 2.8Control Circuit Board2.8.4Control Outputs 2.8.3DIP Switches2.8.2Non-VolatileMemory Table 6 Control output LEDs3.1Basics Page 3.4.2Alarm History Log 3.4View/Set Alarms3.4.1Active Alarms 3.2Status Display3.4.3Setup Alarms Table 7 Alarm default time delays3.4.4Setup Custom Alarms 3.4.6Setup Water Detect Floor PlanCold Start Delay 3.7System Setup3.7.1Setup Operation Default setpoints and rangesSetup functions, default values and ranges Auto Restart DelayDefault Settings and Ranges IR Flush Overfill infrared humidifiers only3.7.4Calibrate Valve Actuator 3.7.2Select Options3.7.3Calibrate Sensors Table 10 Unit options3.7.6Select Humidity Sensing Mode 3.8Run Diagnostics3.7.8Change Passwords 3.7.7Set Status Display3.8.3Test Control Board 3.8.1Show Inputs3.8.2Test Outputs 3.9Date and Time 3.8.4DIP SwitchesTable 11 Setting options 3.10Plot Graphs3.11.1Read Analog Inputs 3.11.2Setup Analog Inputs3.11.4Setup Digital Inputs Slope3.12.2View Total Run Hours 3.13Control Circuit board3.12.1View 24 Hour Run Time History 3.13.1LCD Contrast3.13.4Control Outputs 3.13.3DIP Switches3.13.2Nonvolatile Memory Table 12 Control output LEDsPID Control Chilled Water or SCR Reheats only 4.1Temperature Control4.1.1Cooling/Heating Required, in Percent % Intelligent Control Chilled Water onlyDual Cooling Source 4.1.3Cooling OperationGLYCOOL Cooling Chilled Water CoolingPID Control Chilled Water or SCR Reheats only 4.1.4Heating Operation Electric ReheatHot Water Reheat Intelligent Control Chilled Water only4.3.1Proportional Control 4.3Control Types4.2.4Humidification Operation System Activation 4.3.3Intelligent Control Chilled Water only 4.5.1Connecting the Analog Sensors 4.4Load Control Features4.5Additional Features 4.4.1Short Cycle Control4.5.2Water Detection Display Installation—LT750DIP Switch SettingsFigure 6 Connecting the LT750 Figure 5 Analog input jumpersCalibration SetupPhysical Connections 4.6Communications Liebert Monitoring Devices and Software5.1.1Change Filter 5.1Standard Alarms5.0ALARM DESCRIPTIONS 5.1.2Compressor Overload 5.1.3Custom Alarms5.1.7High Temperature 5.1.4High Head Pressure5.1.14Low Temperature 5.1.9Humidifier Problem Infrared Humidifiers5.1.11Loss of Power Steam Generating Canister Humidifiers5.2.2Smoke Detected 5.1.16Short Cycle5.2.1Loss of Water Flow 5.2.3Standby GC Pump On6.1.1Environmental Control Functions 6.0COMPONENT OPERATION AND MAINTENANCEFan Safety Switch CoolingWater Detection Sensor FirestatSmoke Detector Figure 7 Liebert leak detection units6.2Filters Remote Shutdown6.3.2Belt 6.3Blower Package6.3.1Fan Impellers and Bearings 6.3.3Air Distribution6.4.3Superheat 6.4.1Suction Pressure6.4.2Discharge Pressure Table 18 Suction pressures6.4.4Thermostatic Expansion Valve Operation AdjustmentAdjustment 6.4.5Hot Gas Bypass Valve OperationFigure 9 Outdoor fan/condenser configuration 6.4.6Air Cooled CondenserFigure 10 Johnson Controls valve adjustment Regulating ValveGlycol Solution Maintenance Figure 11 Metrex valve adjustmentMechanical Failure 6.4.9Compressor Replacement6.4.8Compressor Functional Check Compressor Replacement Procedure Electrical FailureRemoving the Pan Cleaning the Pan6.5.1Infrared Humidifier Changing Humidifier LampsAutoflush Controls Autoflush Infrared Humidifier Cleaning SystemAutoflush Operation 6.5.2Steam Generating HumidifierControls Component Operation and MaintenanceOperation Table 20 Humidifier canister part numbers When replacing the canisterReplacing the Canister Figure 14 Canister replacement Circuit Board AdjustmentsDrain Tempering Feature Table 22 Chilled water troubleshooting 7.0TROUBLESHOOTINGTable 21 Blower troubleshooting Troubleshooting Troubleshooting Table 26 Infrared humidifier troubleshooting Table 24 Dehumidification troubleshootingTable 25 Glycol pump troubleshooting TroubleshootingTroubleshooting Table 28 Reheat troubleshooting TroubleshootingSteam Generating Humidifier 8.0MONTHLY MAINTENANCE INSPECTION CHECKLISTFilters Blower SectionBlower Section 9.0SEMIANNUAL MAINTENANCE INSPECTION CHECKLISTFilters CompressorSemiannual Maintenance Inspection Checklist Page that Ensuring The High Availability0f Mission-CriticalData And Applications from