Liebert 3000 manual Status Display, Main Menu MENU/ESC, Status/Alarm Data

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Operation with Advanced Microprocessor Controls

2.2Status Display

The display normally shown includes the present room temperature, humidity, active status func- tions (cooling, heating, dehumidifying, humidifying), and active alarms. If no keys are pressed within 5 minutes, the system automatically returns to the Status Display. The Status Display may also be selected from the Main Menu.

2.3Main Menu <MENU/ESC>

Press the MENU/ESC key to display the Main Menu. The Menu selections include:

Status/alarm data

Setpoints/setup

Date and time

Status display

2.4Status/Alarm Data

Selecting STATUS/ALARM DATA from the Main Menu will display the following selections:

Active alarms

Operating status

Alarm history log

Run hours log

Analog sensors

2.4.1Active Alarms

This screen displays any active alarm. The alarms are numbered, #1 being the most recent. If there are no active alarms, then “NO ALARMS PRESENT” will be displayed.

2.4.2Operating Status

The Operating Status is intended to provide the user with displayed information concerning what the control is calling for the system to do.

NOTE

There may be some time lapse before a specific component matches the displayed number.

For example: The display indicates the chilled water valve is 68% open. On a new call for cooling, it takes several seconds for the valve to travel from fully closed to 68% open. So, when the display reads 68%, it may take a few seconds for the valve to actually open 68%. Also, if the display indicates a com- pressor is operating but the compressor has not yet turned on, it may be off because of the short cycle control (see 4.4.1 - Short Cycle Control).

2.4.3Alarm History Log

A history of the 10 most recent alarms is kept in nonvolatile memory complete with the date and time that the alarms occurred. The first alarm in the history is the most recent and the 10th is the oldest. If the alarm history is full (10 alarms) and a new alarm occurs, the oldest is lost and the newest is saved in alarm history location 1. The rest are moved down the list by 1. Alarm history on new units may show the results of factory testing.

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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 Display Status/Alarm DataMain Menu MENU/ESC Default setpoints and ranges Setpoints/SetupRun Hours Log Analog SensorsSetup Operation Setup SystemSelect Options Show DIP SwitchesCalibrate Sensors Alarm default time delays Setup AlarmsDefault Time Alarm Delay secondsHumidity HUM Control Method Standard Custom Alarm MessagesSet Status Display Analog SetupCalibrate 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 Water Detect Floor Plan Setup Custom AlarmsView 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 Plot Graphs Setting optionsModify Plot Scales View Run Hours Log Analog/Digital InputsView Total Run Hours View 24 Hour Run Time HistoryLCD 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 SoftwareHumidification Operation System Activation Control TypesProportional 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 UnitPhysical Connections SetupCalibration 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 SuperheatThermostatic Expansion Valve Operation AdjustmentHot Gas Bypass Valve Operation Air Cooled Condenser Outdoor fan/condenser configurationRegulating Valve Water/Glycol Cooled Condensers Coaxial CondenserValve spring guide Adjusting Collar Nut Glycol Solution MaintenanceCompressor Functional Check Compressor ReplacementMechanical 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 AdjustmentsChilled water troubleshooting Blower 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

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