Liebert 3000 manual Water/Glycol Cooled Condensers Coaxial Condenser, Regulating Valve

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Component Operation and Maintenance

6.4.7Water/Glycol Cooled Condensers Coaxial Condenser

Each water or glycol cooled module has a coaxial condenser which consists of a steel outside tube and a copper inside tube.

Coaxial condensers do not normally require maintenance or replacement if the water supply is clean. If your system operates at high head pressure with reduced capacity, and all other causes have been eliminated, the coaxial condenser may be obstructed and needs to be replaced.

Regulating Valve

The water regulating valve automatically regulates the amount of fluid necessary to remove the heat from the refrigeration system, permitting more fluid to flow when load conditions are high and less fluid to flow when load conditions are low. The valve consists of a brass body, balance spring, valve seat, valve disc holders, capillary tube to discharge pressure, and adjusting screw.

Standard Valve - 150 psig (1034 kPa) system for 3 & 5 ton units (Johnson Controls Valve) High Pressure Valve - 350 psig (2413 kPa) system for 5 ton units (Johnson Controls Valve)

Adjustment—The valve may be adjusted with a standard refrigeration service valve wrench or screw driver. Refer to Table 19 for recommended refrigerant pressures.

To lower the head pressure setting, turn the square adjusting screw clockwise until the high pressure gauge indicates the desired setting.

To raise the head pressure setting, turn the adjusting screw counterclockwise until the desired set- ting is obtained.

Figure 10 Johnson Controls valve adjustment

Range

Spring

Valve

 

Spring

 

Guide

Range Adjustment Screw

 

 

Top

 

Retainer

 

Insert screwdrivers under

 

the valve spring guide.

Manual Flushing—The valve may be flushed by inserting a screwdriver or similar tool under the two sides of the main spring and lifting. This action will open the valve seat and flush any dirt parti- cles from the seat. If this fails, it will be necessary to disassemble the valve and clean the seat.

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Contents Liebert Challenger Page Table of Contents Run Diagnostics Component Operation and Maintenance Alarm DescriptionsHumidifier Figures Page Compressorized Systems System DescriptionsGlycool Chilled Glycol Cooling Systems Chilled Water SystemsStart-Up Procedure Advanced microprocessor control panel BasicsAdvanced microprocessor a control for Challenger Status/Alarm Data Status DisplayMain Menu MENU/ESC Default setpoints and ranges Setpoints/SetupRun Hours Log Analog SensorsSetup Operation Setup SystemShow DIP Switches Select OptionsCalibrate Sensors Alarm default time delays Setup AlarmsDefault Time Alarm Delay secondsHumidity HUM Control Method Standard Custom Alarm MessagesAnalog Setup Set Status DisplayCalibrate Actuator Show Inputs Run DiagnosticsTest Outputs Test Control BoardDate and Time Change PasswordsControl Circuit Board LCD Display ContrastNon-Volatile Memory DIP SwitchesControl Outputs Control output LEDsOperation with Advanced Microprocessor with Graphics Control Advanced microprocessor with graphics control menu See 3.7.7 Set Status Display View/Set AlarmsSetup Alarms Setup Custom Alarms Setup Water Detect Floor PlanView Water Detect Floor Plan for Optional LTM1000/LT750 Cold Start Delay System SetupOperating Status View/Set Control SetpointsDefault Settings and Ranges Auto Restart DelayIR Flush Overfill infrared humidifiers only Chilled Water/Hot Water/Econ-O-Coil FlushSelect Control Algorithm Chilled Water and SCR Reheats only Calibrate Valve ActuatorSelect Humidity Sensing Mode Run DiagnosticsShow Inputs Setting options Plot GraphsModify Plot Scales View Run Hours Log Analog/Digital InputsView 24 Hour Run Time History View Total Run HoursLCD Contrast Nonvolatile Memory Cooling/Heating Required, in Percent % Temperature ControlResponse to Control Types Proportional Control PID Control Chilled Water or SCR Reheats onlyDual Cooling Source Glycool CoolingChilled Water Cooling Cooling/dehumidification load status responseHeating Operation Electric Reheat Humidity ControlHot Water Reheat SCR Electric Reheat Requires Special Control SoftwareControl Types Humidification Operation System ActivationProportional Control Time between peaks x 5% Additional Features Load Control FeaturesConnecting the Analog Sensors Short Cycle ControlFault Installation-LT750 DIP Switch SettingsWater Detection Display LT750 Environmental UnitSetup Physical ConnectionsCalibration Liebert Monitoring Devices and Software CommunicationsChange Filter Standard AlarmsHigh Temperature Custom AlarmsCompressor Overload High Head PressureHumidifier Problem Infrared Humidifiers High Temperature and Low Temperature SimultaneouslyLoss of Power Low TemperatureOptional/Custom Alarms System Testing Smoke Detector FirestatWater Detection Sensor Liebert unit Recommended Liquitect location Floor drainFilters Zone leak detection kit installation scenariosRemote Shutdown Distance From UnitFan Impellers and Bearings Blower PackageBelt Air DistributionSuction Pressure Refrigeration SystemDischarge Pressure SuperheatAdjustment Thermostatic Expansion Valve OperationHot Gas Bypass Valve Operation Air Cooled Condenser Outdoor fan/condenser configurationWater/Glycol Cooled Condensers Coaxial Condenser Regulating ValveValve spring guide Adjusting Collar Nut Glycol Solution MaintenanceCompressor Replacement Compressor Functional CheckMechanical Failure Electrical Failure Compressor Replacement ProcedureHumidifier Cleaning the PanInfrared Humidifier Removing the PanAutoflush Operation Autoflush Infrared Humidifier Cleaning SystemAutoflush Controls Steam Generating HumidifierControls OperationHumidifier canister part numbers Replacing the CanisterPart Capacity Number Voltage Lbs/hr kg/hr 200-460Drain Tempering Feature Circuit Board AdjustmentsBlower troubleshooting Chilled water troubleshootingSymptom Possible Cause Check or Remedy Compressor and refrigeration system troubleshooting Compressor and refrigeration system troubleshooting Glycol pump troubleshooting Dehumidification troubleshootingInfrared humidifier troubleshooting See 6.4.8 Compressor Functional Check and TableSteam generating humidifier troubleshooting Reheat troubleshooting Blower Section Filters Steam Generating HumidifierCompressor Air Cooled Condenser if applicableWater/Glycol Condenser if applicable FiltersGlycol Pump Electrical PanelSemiannual Maintenance Inspection Checklist Page Iti Ne tTi n That
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3000 specifications

The Liebert 3000 is a cutting-edge power protection solution designed to provide reliable and efficient backup power for critical applications. This uninterruptible power supply (UPS) system is engineered to safeguard sensitive electronic equipment from power disturbances, ensuring uninterrupted operations in data centers, telecommunications, and industrial environments.

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