Emerson DH, VH, DE, VE manual Optional/Custom Alarms

Page 55

Alarm Descriptions and Solutions

6.2Optional/Custom Alarms

6.2.1Loss of Water Flow

No water flow is detected in the chilled water or condenser water supply line. An optional flow switch is required for this alarm. Check for service valves closed, pumps not working, etc.

6.2.2Smoke Detected

Smoke is detected in the return air by an optional Liebert Smoke Detector. Check for source of smoke or fire, and follow appropriate emergency procedures.

6.2.3Standby GC Pump On

The primary pump has failed, and the standby pump is activated (glycol cooled and GLYCOOL™ units only).

Check for problems with the primary pump (fuses blown, motor burn out, service valve shut, stuck check valve, impeller damage, etc.).

6.2.4Standby Unit On

The primary environmental control system has had an alarm condition, and the standby system is activated.

6.2.5Water Under Floor

Water is detected by an optional Liebert Water Detection System. Check under the raised floor for water or other leaks.

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Image 55 Contents
Liebert Deluxe System/3 Page Table of Contents Main Menu AG-Run Diagnostics Temperature Control Alarm Descriptions and SolutionsSystem Testing Figures Page Introduction System DescriptionGlycool Chilled Glycol Cooling Systems Chilled Water SystemsDual Source Cooling Systems Additional Considerations for Upflow Units Initial START-UP ProcedureBasics Advanced Microprocessor Controls SetupDisplay the Main Menu-AM Control Advanced microprocessor AM control menu Operating Status Main Menu AM-Status/Alarm DataActive Alarms Alarm History LogAnalog Sensors Main Menu AM-Setpoints/SetupSetup System Selection Default control and alarm setpointsSetup functions and factory default values Setup OperationFunction Default Range Calibrate Sensors Show DIP SwitchesDIP switch settings Select OptionsSelect Control Type Setup AlarmsAlarm Default Delay seconds Alarm default time delayAnalog Setup Standard Alarm MessagesHumidity Control Method Show Inputs Run DiagnosticsSet Status Display Calibrate ActuatorTest Control Board Change PasswordsMain Menu AM-Date and Time Test OutputsMain Menu AM-Status Display Load Control FeaturesControl Circuit Board Control Outputs DIP SwitchesCommunications Nonvolatile MemoryView/Change Functions Monitor functionsAdvanced microprocessor with graphics control panel Advanced Microprocessor with Graphics Control SetupAdvanced microprocessor with graphics AG control menu Display the Main Menu-AG Control Main Menu AG-View/Set AlarmsMain Menu AG-Status Display Alarm Seconds Default Time DelayInstallation-LT750 DIP Switch Settings Set Up Custom AlarmsStandard Custom Alarm Messages Setup Water Detect Floor PlanMain Menu AG-Operating Status Main Menu AG-Setup SystemMain Menu AG-View/Set Control Setpoints IR Flush Overfill infrared humidifiers only Cold Start DelayAuto Restart Delay Default Settings and RangesSelect Control Algorithm Calibrate Valve ActuatorSelect Humidity Sensing Mode Main Menu AG-Run DiagnosticsShow Inputs Main Menu AG-Date and Time Dehumidification with Normal or Delayed ReheatMain Menu AG-Plot Graphs Main Menu AG-Analog/Digital Inputs View 24 Hour Run Time History Set Up Digital InputsMain Menu AG-View Run Hours Log Read Digital InputsControl Circuit Board On/Off Status Time View Only Silence Alarm Response by Control TYPE-ADVANCED Microprocessor Controls Temperature ControlHeating Operation Electric Reheat Glycool CoolingDual Cooling Source Chilled Water CoolingControl Types Proportional Control Humidity ControlHot Water/Steam Heat Dehumidification/Humidification Required, in Percent %Chilled Water Dehumidification Dual Cooling Source DehumidificationHumidification Operation System Activation Suggested System Tuning Procedure Intelligent Control Load Control Features Additional connections available after unit delivery Connecting the Analog SensorsAnalog Sensors Changing factory-set sensor inputsWater Detection Display SetupPhysical Connections Calibration View/Change Functions Compressor Overload Standard AlarmsAlarm Descriptions and Solutions Change FilterHumidifier Problem Infrared Humidifiers Custom Alarms Only With Advanced ControlsHigh Temperature High Temperature and Low Temperature SimultaneouslyLow Humidity Loss of PowerLow Temperature Loss of Air FlowOptional/Custom Alarms Proportional Heating/Cooling/ Dehumidification System TestingComponent Operation and MAINTENANCE, Checks and Adjustments Environmental Control FunctionsFirestat Fan Safety SwitchElectric Panel Control Transformer and FusesBelts FiltersBlower Package Fan Impellers and BearingsElectronic Variable Speed Drive Inverter Refrigeration SystemCompressor Oil Level Thermostatic Expansion Valve Operation Suction PressureDischarge Pressure Suction SuperheatHot Gas Bypass Valve Operation AdjustmentAir Cooled Condenser Outdoor fan/condenser configurationWater/Glycol Cooled Condensers Shell and Tube Condensers Adjustment Johnson Controls/Penn Johnson valvesTesting Function of Valve Glycol Solution MaintenanceMechanical Failure Compressor ReplacementElectrical Failure Humidifier Compressor Replacement ProcedureInfrared Humidifier Humidifier lamps Autoflush Infrared Humidifier Cleaning SystemChanging Humidifier Lamps Autoflush OperationSteam generating humidifier Steam Generating HumidifierReplacing the Canister ControlsHumidifier canister part numbers Faults-canister generator humidifierPriority Name LED Indication Description Hz Models Lbs/hr kg/hr Circuit Board AdjustmentsSteam generating humidifier capacity CapacityUnit Rated Rated Values Voltage Capacity Electric ReheatVoltage AMP Set Pt Symptom Possible Cause Check or Remedy TroubleshootingBlower troubleshooting Chilled water troubleshootingCompressor and refrigeration system troubleshooting Compressor and refrigeration system troubleshooting Glycol pumps troubleshooting Dehumidification troubleshootingAdjustments on Humidifier-steam generator troubleshootingReheat troubleshooting Humidifier-infrared troubleshootingMaintenance Inspection CHECKLIST-MONTHLY Maintenance Inspection CHECKLIST-SEMIANNUAL That Ne tIti Ti n