Liebert 3000 manual Select Options, Calibrate Sensors, Show DIP Switches

Page 16

Operation with Advanced Microprocessor Controls

Table 2 lists the setup functions, their factory default values and the allowable programming ranges.

Table 2

Setup functions, default values and ranges

 

Function

Default

Range

Cold Start Time Delay*

3

0 to 3 min (0 = no delay)

Restart Time Delay

0.1

0 to 9.9 min (0 = manual restart)

Infrared Fill Rate

150

110 to 500%

Chilled/Hot Water Coil Flush

24

0 to 99 hrs (also Econ-O-Coil)

C/F Degrees

F

C or F

*Factory set to 0 for water cooled, glycol, and GLYCOOL units.

Select Options

The following table lists options which should match the options installed with your unit and should not need to be changed during normal operation.

Table 3

Unit options

 

 

Option

Selection

Heating1

 

Yes or No

Humidifier

 

Yes or No

Dehumidifier

Yes or No

Hot Gas Reheat2

Yes or No

Heat Stages3

2

1Heating cannot be disabled on units with SCR reheats. 2Hot gas reheat not available on units with SCR reheats. 3Heat stages not selectable on units with SCR reheats.

Calibrate Sensors

The temperature and humidity sensors can be calibrated by selecting this menu item. “SENSOR” shows the actual sensor reading or raw reading. “CALIBRATED” shows the sensor reading after the calibration offset has been added. The temperature sensor can be calibrated ±5 degrees Fahrenheit and the humidity sensor can be calibrated ±10%RH. When calibrating the humidity sensor, the value shown will always be % RH, even though absolute humidity control may be selected. If absolute humidity control is selected, the Normal Status Display will display the adjusted reading and may not agree with the relative humidity reading displayed while in calibration.

Show DIP Switches

The DIP switch settings can be reviewed from the display panel. Changing the DIP switches requires opening the upper panel for access to the DIP switches on the microprocessor control board.

NOTE

Power MUST be cycled OFF, then ON from the unit disconnect switch for the control system to update the DIP switch settings (with the exception of switch 8).

Table 4

DIP switch settings

 

 

 

 

 

Switch #

 

Off

On

1

 

No Part Coil

Part Coil/Chilled Water

2

 

Electric/Hot Gas Reheat

Hot Water Reheat

3

 

All

Not Used

4

 

No GLYCOOL

GLYCOOL

5

 

No Dual Cooling

Dual Cooling

6

 

Not Used

Not Used

7a

 

Tight Control

Standard Control

aSCR reheats only (with special software); otherwise, not used.

The selections shown in Table 4 should match options installed on your unit and should not need to change during normal operation. Switches 1 through 7 are self explanatory. DIP switch 8, not shown in the table, enables the password feature when set to ON and disables the password feature when set to OFF.

8

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Contents Liebert Challenger Page Table of Contents Run Diagnostics Alarm Descriptions Component Operation and MaintenanceHumidifier Figures Page System Descriptions Compressorized SystemsGlycool Chilled Glycol Cooling Systems Chilled Water SystemsStart-Up Procedure Basics Advanced microprocessor control panelAdvanced microprocessor a control for Challenger Status Display Status/Alarm DataMain Menu MENU/ESC Setpoints/Setup Default setpoints and rangesRun Hours Log Analog SensorsSetup System Setup OperationSelect Options Show DIP SwitchesCalibrate Sensors Setup Alarms Alarm default time delaysDefault Time Alarm Delay secondsStandard Custom Alarm Messages Humidity HUM Control MethodSet Status Display Analog SetupCalibrate Actuator Run Diagnostics Show InputsTest Outputs Test Control BoardChange Passwords Date and TimeControl Circuit Board LCD Display ContrastDIP Switches Non-Volatile MemoryControl Outputs Control output LEDsOperation with Advanced Microprocessor with Graphics Control Advanced microprocessor with graphics control menu View/Set Alarms See 3.7.7 Set Status DisplaySetup Alarms Setup Water Detect Floor Plan Setup Custom AlarmsView Water Detect Floor Plan for Optional LTM1000/LT750 System Setup Cold Start DelayOperating Status View/Set Control SetpointsAuto Restart Delay Default Settings and RangesIR Flush Overfill infrared humidifiers only Chilled Water/Hot Water/Econ-O-Coil FlushCalibrate Valve Actuator Select Control Algorithm Chilled Water and SCR Reheats onlyRun Diagnostics Select Humidity Sensing ModeShow Inputs Plot Graphs Setting optionsModify Plot Scales Analog/Digital Inputs View Run Hours LogView Total Run Hours View 24 Hour Run Time HistoryLCD Contrast Nonvolatile Memory Temperature Control Cooling/Heating Required, in Percent %Response to Control Types Proportional Control PID Control Chilled Water or SCR Reheats onlyGlycool Cooling Dual Cooling SourceChilled Water Cooling Cooling/dehumidification load status responseHumidity Control Heating Operation Electric ReheatHot Water Reheat SCR Electric Reheat Requires Special Control SoftwareHumidification Operation System Activation Control TypesProportional Control Time between peaks x 5% Load Control Features Additional FeaturesConnecting the Analog Sensors Short Cycle ControlInstallation-LT750 DIP Switch Settings FaultWater Detection Display LT750 Environmental UnitPhysical Connections SetupCalibration Communications Liebert Monitoring Devices and SoftwareStandard Alarms Change FilterCustom Alarms High TemperatureCompressor Overload High Head PressureHigh Temperature and Low Temperature Simultaneously Humidifier Problem Infrared HumidifiersLoss of Power Low TemperatureOptional/Custom Alarms System Testing Firestat Smoke DetectorWater Detection Sensor Liebert unit Recommended Liquitect location Floor drainZone leak detection kit installation scenarios FiltersRemote Shutdown Distance From UnitBlower Package Fan Impellers and BearingsBelt Air DistributionRefrigeration System Suction PressureDischarge Pressure SuperheatThermostatic Expansion Valve Operation AdjustmentHot Gas Bypass Valve Operation Outdoor fan/condenser configuration Air Cooled CondenserRegulating Valve Water/Glycol Cooled Condensers Coaxial CondenserValve spring guide Glycol Solution Maintenance Adjusting Collar NutCompressor Functional Check Compressor ReplacementMechanical Failure Compressor Replacement Procedure Electrical FailureCleaning the Pan HumidifierInfrared Humidifier Removing the PanAutoflush Infrared Humidifier Cleaning System Autoflush OperationAutoflush Controls Steam Generating HumidifierOperation ControlsReplacing the Canister Humidifier canister part numbersPart Capacity Number Voltage Lbs/hr kg/hr 200-460Circuit Board Adjustments Drain Tempering FeatureChilled water troubleshooting Blower troubleshootingSymptom Possible Cause Check or Remedy Compressor and refrigeration system troubleshooting Compressor and refrigeration system troubleshooting Dehumidification troubleshooting Glycol pump troubleshootingInfrared humidifier troubleshooting See 6.4.8 Compressor Functional Check and TableSteam generating humidifier troubleshooting Reheat troubleshooting Filters Steam Generating Humidifier Blower SectionCompressor Air Cooled Condenser if applicableFilters Water/Glycol Condenser if applicableGlycol Pump Electrical PanelSemiannual Maintenance Inspection Checklist Page Ne t ItiTi n That
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3000 specifications

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