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Liebert
3000 manual
Models:
3000
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Troubleshooting
Install
Error codes
6.4.9Compressor Replacement
Maintenance
Outdoor fan/condenser configuration
4.5.1Connecting the Analog Sensors
5.1.9Humidifier Problem Infrared Humidifiers
2.5.3Run Diagnostics
2.5Setpoints/Setup
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Contents
Liebert Challenger
Precision CoolingFor Business-Critical Continuity
Page
TABLE OF CONTENTS
3.8.1 Show Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.0 ALARM DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIGURES
TABLES
Page
1.1.1Compressorized Systems
1.1System Descriptions
1.0INTRODUCTION
1.1.2GLYCOOL Chilled Glycol Cooling Systems
1.2Start-UpProcedure
2.1Basics
Figure 1 Advanced microprocessor control panel
Custom Alarms 1 to 4 Programmed Alarm Messages
Alarms Available
Compressor Overload Loss of Power
Operation with Advanced Microprocessor Controls
2.4.3Alarm History Log
2.4Status/Alarm Data
2.4.1Active Alarms
2.2Status Display
2.4.4Run Hours Log
2.5Setpoints/Setup
Table 1 Default setpoints and ranges
2.4.5Analog Sensors
2.5.2Setup System
Setup Operation
DIP switch settings
Show DIP Switches
Setup functions, default values and ranges
Select Options
Select Control Type
Setup Alarms
Alarm default time delays
Table
Standard Custom Alarm Messages
Humidity HUM Control Method
Calibrate Actuator
Analog Setup
Set Status Display
Test Outputs
2.5.3Run Diagnostics
Show Inputs
Test Control Board
2.7Status Display
2.5.4Change Passwords
2.6Date and Time
2.8Control Circuit Board
2.8.4Control Outputs
2.8.3DIP Switches
2.8.2Non-VolatileMemory
Table 6 Control output LEDs
3.1Basics
Page
3.4.2Alarm History Log
3.4View/Set Alarms
3.4.1Active Alarms
3.2Status Display
3.4.3Setup Alarms
Table 7 Alarm default time delays
3.4.4Setup Custom Alarms
3.4.6Setup Water Detect Floor Plan
Cold Start Delay
3.7System Setup
3.7.1Setup Operation
Default setpoints and ranges
Setup functions, default values and ranges
Auto Restart Delay
Default Settings and Ranges
IR Flush Overfill infrared humidifiers only
3.7.4Calibrate Valve Actuator
3.7.2Select Options
3.7.3Calibrate Sensors
Table 10 Unit options
3.7.6Select Humidity Sensing Mode
3.8Run Diagnostics
3.7.8Change Passwords
3.7.7Set Status Display
3.8.3Test Control Board
3.8.1Show Inputs
3.8.2Test Outputs
3.9Date and Time
3.8.4DIP Switches
Table 11 Setting options
3.10Plot Graphs
3.11.1Read Analog Inputs
3.11.2Setup Analog Inputs
3.11.4Setup Digital Inputs
Slope
3.12.2View Total Run Hours
3.13Control Circuit board
3.12.1View 24 Hour Run Time History
3.13.1LCD Contrast
3.13.4Control Outputs
3.13.3DIP Switches
3.13.2Nonvolatile Memory
Table 12 Control output LEDs
PID Control Chilled Water or SCR Reheats only
4.1Temperature Control
4.1.1Cooling/Heating Required, in Percent %
Intelligent Control Chilled Water only
Dual Cooling Source
4.1.3Cooling Operation
GLYCOOL Cooling
Chilled Water Cooling
PID Control Chilled Water or SCR Reheats only
4.1.4Heating Operation Electric Reheat
Hot Water Reheat
Intelligent Control Chilled Water only
4.3.1Proportional Control
4.3Control Types
4.2.4Humidification Operation System Activation
4.3.3Intelligent Control Chilled Water only
4.5.1Connecting the Analog Sensors
4.4Load Control Features
4.5Additional Features
4.4.1Short Cycle Control
4.5.2Water Detection Display
Installation—LT750DIP Switch Settings
Figure 6 Connecting the LT750
Figure 5 Analog input jumpers
Calibration
Setup
Physical Connections
4.6Communications
Liebert Monitoring Devices and Software
5.1.1Change Filter
5.1Standard Alarms
5.0ALARM DESCRIPTIONS
5.1.2Compressor Overload
5.1.3Custom Alarms
5.1.7High Temperature
5.1.4High Head Pressure
5.1.14Low Temperature
5.1.9Humidifier Problem Infrared Humidifiers
5.1.11Loss of Power
Steam Generating Canister Humidifiers
5.2.2Smoke Detected
5.1.16Short Cycle
5.2.1Loss of Water Flow
5.2.3Standby GC Pump On
6.1.1Environmental Control Functions
6.0COMPONENT OPERATION AND MAINTENANCE
Fan Safety Switch
Cooling
Water Detection Sensor
Firestat
Smoke Detector
Figure 7 Liebert leak detection units
6.2Filters
Remote Shutdown
6.3.2Belt
6.3Blower Package
6.3.1Fan Impellers and Bearings
6.3.3Air Distribution
6.4.3Superheat
6.4.1Suction Pressure
6.4.2Discharge Pressure
Table 18 Suction pressures
6.4.4Thermostatic Expansion Valve Operation
Adjustment
Adjustment
6.4.5Hot Gas Bypass Valve Operation
Figure 9 Outdoor fan/condenser configuration
6.4.6Air Cooled Condenser
Figure 10 Johnson Controls valve adjustment
Regulating Valve
Glycol Solution Maintenance
Figure 11 Metrex valve adjustment
Mechanical Failure
6.4.9Compressor Replacement
6.4.8Compressor Functional Check
Compressor Replacement Procedure
Electrical Failure
Removing the Pan
Cleaning the Pan
6.5.1Infrared Humidifier
Changing Humidifier Lamps
Autoflush Controls
Autoflush Infrared Humidifier Cleaning System
Autoflush Operation
6.5.2Steam Generating Humidifier
Controls
Component Operation and Maintenance
Operation
Table 20 Humidifier canister part numbers
When replacing the canister
Replacing the Canister
Figure 14 Canister replacement
Circuit Board Adjustments
Drain Tempering Feature
Table 22 Chilled water troubleshooting
7.0TROUBLESHOOTING
Table 21 Blower troubleshooting
Troubleshooting
Troubleshooting
Table 26 Infrared humidifier troubleshooting
Table 24 Dehumidification troubleshooting
Table 25 Glycol pump troubleshooting
Troubleshooting
Troubleshooting
Table 28 Reheat troubleshooting
Troubleshooting
Steam Generating Humidifier
8.0MONTHLY MAINTENANCE INSPECTION CHECKLIST
Filters
Blower Section
Blower Section
9.0SEMIANNUAL MAINTENANCE INSPECTION CHECKLIST
Filters
Compressor
Semiannual Maintenance Inspection Checklist
Page
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Ensuring The High Availability
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