Liebert 3000 manual Standard Alarms, Change Filter

Page 46

Alarm Descriptions

5.0ALARM DESCRIPTIONS

The Advanced Microprocessor (A) and the Advanced Microprocessor with Graphics (G) Control sys- tems will audibly and visually annunciate all ENABLED alarms, including the four custom alarms. With the Advanced & Advanced with Graphics Controls, the customer alarms can be from the optional alarm list and/or can have their own fully custom text. Two alarms may be selected as cus- tom for the Advanced Microprocessor and four can be custom for Advanced Microprocessor with Graphics. The custom alarm inputs are 24 VAC, which is available from the Liebert unit. Alarms are wired from terminal 24 through a normally open contact to locations 50, 51, 55, and 56, respectively, for alarms 1 through 4.

The Advanced and Advanced with Graphics alarms can be delayed from 0 to 255 seconds (for Advanced see Setup Alarms on page 9; for Advanced with Graphics, see 3.4.3 - Setup Alarms). The Advanced alarms can be ENABLED or DISABLED and can also be programmed to energize the Common Alarm Relay or to “alarm only” and not energize the Common Alarm Relay.

The Advanced Microprocessor with Graphics alarms can be selected as WARNING, URGENT, or DIS- ABLED. If selected to be a WARNING, they are annunciated after the Time Delay, but do not ener- gize the Common Alarm Relay. If selected as URGENT, they are annunciated after the Time Delay as a WARNING alarm and then re-annunciated after a user programmable period from 0 minutes to 999 hours as an URGENT alarm. When annunciated as an URGENT alarm, the Common Alarm Relay is activated. The custom alarm inputs of the Advanced Microprocessor with Graphics can be designated to be “Status Only.” As Status Only the custom alarm input is referenced as a digital input and is no longer treated as an alarm. It is for monitoring only and can be reviewed by selecting “ANALOG/DIG-

ITAL INPUTS.”

When a new alarm occurs, it is displayed on the screen and the audible alarm is activated. If commu- nicating with a Liebert Site Product, the alarm is also transmitted. The display will also show a mes- sage to “PRESS ENTER KEY TO SILENCE” the alarm. After the alarm is silenced, the display will return to the Normal Status Display. For the Advanced Microprocessor with Graphics, the bell and hammer are shown at the top of the Normal Status Display. For the Advanced Microprocessor, the bottom line will display the number of Active Alarms. The active alarms can be reviewed on the Advanced Microprocessor Controls by selecting “ACTIVE ALARMS.”

The alarms can also be silenced through communications with a Liebert Site Products unit. Most alarms will reset automatically when the alarm condition is no longer present and only after it has been acknowledged by being “Silenced.” The exceptions are:

1.The three software alarms: Loss of Power, Low Suction Pressure, and Short Cycle, which reset automatically 90 minutes after being “Silenced” or acknowledged.

2.Some alarms such as overloads and high pressure switches may require a manual reset depending on your model.

A history of 10 alarms for Advanced (see 2.4.3 - Alarm History Log) and 60 alarms for Advanced with Graphics (see 3.4.2 - Alarm History Log) is retained in nonvolatile memory.

This section provides a definition of each available alarm. Troubleshooting suggestions are included. Refer to 7.0 - Troubleshooting for more details. If you need assistance with your environmental con- trol system, contact your Liebert supplier.

5.1Standard Alarms

5.1.1Change Filter

Periodically, the return air filters in the environmental units must be changed. The Change Filter alarm notifies the user that filter replacement is necessary. A differential air pressure switch closes when the pressure drop across the filters becomes excessive. The switch is adjustable using the proce- dure on the switch label.

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Contents Liebert Challenger Page Table of Contents Run Diagnostics Alarm Descriptions Component Operation and MaintenanceHumidifier Figures Page Glycool Chilled Glycol Cooling Systems System DescriptionsCompressorized Systems Chilled Water SystemsStart-Up Procedure Basics Advanced microprocessor control panelAdvanced microprocessor a control for Challenger Status Display Status/Alarm DataMain Menu MENU/ESC Run Hours Log Setpoints/SetupDefault setpoints and ranges Analog SensorsSetup System Setup OperationSelect Options Show DIP SwitchesCalibrate Sensors Default Time Setup AlarmsAlarm default time delays Alarm Delay secondsStandard Custom Alarm Messages Humidity HUM Control MethodSet Status Display Analog SetupCalibrate Actuator Test Outputs Run DiagnosticsShow Inputs Test Control BoardControl Circuit Board Change PasswordsDate and Time LCD Display ContrastControl Outputs DIP SwitchesNon-Volatile Memory 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 Operating Status System SetupCold Start Delay View/Set Control SetpointsIR Flush Overfill infrared humidifiers only Auto Restart DelayDefault Settings and Ranges 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 Response to Control Types Proportional Control Temperature ControlCooling/Heating Required, in Percent % PID Control Chilled Water or SCR Reheats onlyChilled Water Cooling Glycool CoolingDual Cooling Source Cooling/dehumidification load status responseHot Water Reheat Humidity ControlHeating Operation Electric Reheat SCR Electric Reheat Requires Special Control SoftwareHumidification Operation System Activation Control TypesProportional Control Time between peaks x 5% Connecting the Analog Sensors Load Control FeaturesAdditional Features Short Cycle ControlWater Detection Display Installation-LT750 DIP Switch SettingsFault LT750 Environmental UnitPhysical Connections SetupCalibration Communications Liebert Monitoring Devices and SoftwareStandard Alarms Change FilterCompressor Overload Custom AlarmsHigh Temperature High Head PressureLoss of Power High Temperature and Low Temperature SimultaneouslyHumidifier Problem Infrared Humidifiers Low TemperatureOptional/Custom Alarms System Testing Water Detection Sensor FirestatSmoke Detector Liebert unit Recommended Liquitect location Floor drainRemote Shutdown Zone leak detection kit installation scenariosFilters Distance From UnitBelt Blower PackageFan Impellers and Bearings Air DistributionDischarge Pressure Refrigeration SystemSuction 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 FailureInfrared Humidifier Cleaning the PanHumidifier Removing the PanAutoflush Controls Autoflush Infrared Humidifier Cleaning SystemAutoflush Operation Steam Generating HumidifierOperation ControlsPart Capacity Number Voltage Lbs/hr kg/hr Replacing the CanisterHumidifier canister part numbers 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 Infrared humidifier troubleshooting Dehumidification troubleshootingGlycol pump troubleshooting See 6.4.8 Compressor Functional Check and TableSteam generating humidifier troubleshooting Reheat troubleshooting Compressor Filters Steam Generating HumidifierBlower Section Air Cooled Condenser if applicableGlycol Pump FiltersWater/Glycol Condenser if applicable Electrical PanelSemiannual Maintenance Inspection Checklist Page Ti n Ne tIti 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.

One of the standout features of the Liebert 3000 is its high-efficiency design. With an efficiency rating of up to 94%, the system minimizes energy loss, resulting in lower operational costs and a reduced carbon footprint. This is particularly important in today's environmentally conscious climate, as organizations strive to meet sustainability goals while maintaining top-tier performance.

The Liebert 3000 employs advanced technologies to enhance its functionality. It incorporates online double-conversion technology, which provides a continuous supply of clean and regulated power. This technology ensures that connected loads receive stable voltage and frequency, shielding them from voltage spikes, sags, and outages. Additionally, the UPS offers features such as automatic battery testing, which helps ensure peak battery performance and reliability.

Another key characteristic of the Liebert 3000 is its modular design, allowing for flexible scalability. This means that organizations can easily expand the capacity of their UPS system as their power needs grow, without the need for extensive system overhauls. The modular architecture also facilitates simplified maintenance and reduces downtime, as individual modules can be serviced without interrupting power to the critical load.

The system is equipped with comprehensive monitoring and management capabilities. The Liebert 3000 provides real-time data on power usage, battery status, and system performance, enabling facility managers to make informed decisions and proactively address potential issues. The integration of remote management tools allows for seamless monitoring from anywhere, providing peace of mind for operators.

Overall, the Liebert 3000 combines high efficiency, advanced technology, and flexible design to deliver a robust power protection solution. Its reliability and performance make it a preferred choice for organizations seeking to protect their critical infrastructure while enhancing operational efficiency and sustainability. As businesses continue to rely on technology for their everyday operations, the Liebert 3000 stands out as a dependable safeguard against the uncertainties of power quality.
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