Liebert Deluxe System 3 Precision Cooling Systems - Vertiv

1 Precision CoolingFor Business-Critical Continuity Liebert Deluxe System /3 Operation and Maintenance Manual50 and 60 Hz, 6-30 Ton DX Systems (DH/DE/VH/VE); 12-60 Ton CW Systems (FH/UH)DISCONTINUED PRODUCT DISCONTINUED P R OD U C TiTABLE OF .. Description.. Two-Step Systems .. Four-Step Systems .. Water Systems .. (Chilled Glycol Cooling ) Systems .. Source Cooling Systems .. START-UP PROCEDURE.. Considerations for Upflow Units.. MICROPROCESSOR CONTROLS SETUP .. the Main Menu AM Control .. Menu (AM) Status/Alarm Data .. Alarms .. Status .. History Log.

2 Hours Log .. Sensors .. Menu (AM) Setpoints/Setup .. Setpoints Selection .. System Selection .. Diagnostics .. Passwords .. Menu (AM) Date and Time .. Menu (AM) Status Display .. Control Features .. Cycle Control .. Load Activation Control .. Sequencing Control .. Circuit Board .. Display Contrast .. Memory .. Switches.. Outputs .. functions .. Functions .. MICROPROCESSOR WITH GRAPHICS CONTROL SETUP.. the Main Menu AG Control .. Menu (AG) Status Display.. 20 DISCONTINUED P R OD U C Menu (AG) View/Set Alarms .. Alarms.

3 History Log .. Alarms .. Up Custom Alarms.. Water Detect Floor Plan (for optional LTM1000/LT750) .. Water Detect Floor Plan .. Menu (AG) Operating Status .. Menu (AG) View/Set Control Setpoints .. Menu (AG) Setup System .. Operation .. Options .. Sensors .. Valve Actuator .. Control Algorithm .. Humidity Sensing Mode .. Status Display .. Passwords .. Menu (AG) Run Diagnostics .. Inputs .. Outputs .. Control Board .. Switches.. Menu (AG) Date and Time.. Menu (AG) Plot Graphs .. Modify Plot Scales .. Menu (AG) Analog/Digital Inputs.

4 Read Analog Inputs .. Setup Analog Inputs.. Read Digital Inputs .. Set Up Digital Inputs .. Menu (AG) View Run Hours Log.. View 24 Hour Run Time History .. View Total Run Hours .. Control Features .. Short Cycle Control .. Sequential Load Activation Control .. Compressor Sequencing Control .. Circuit Board .. LCD Display Contrast .. Nonvolatile Memory .. DIP Switches.. Control Outputs .. Monitor functions: .. View/Change Functions:.. 32 DISCONTINUED P R OD U C BY CONTROL TYPE ADVANCED MICROPROCESSOR CONTROLS.

5 Control .. Required, in Percent (%) .. to Control Types .. Operation.. Operation .. Control .. Required, in Percent (%) .. Types .. Operation .. Operation .. Types .. Control Features .. Cycle Control .. Load Activation Control .. Sequencing Control .. Sensors .. the Analog Sensors .. Detection Display .. functions: .. Functions:.. DESCRIPTIONS AND SOLUTIONS .. Alarms .. Filter .. Overload .. Alarms (Only With Advanced Controls) .. Head Pressure .. Humidity .. Humidity and Low Humidity (Simultaneously).

6 Temperature .. Temperature and Low Temperature (Simultaneously) .. Problem .. Loss of Air Flow .. Loss of Power .. Low Humidity .. Low Suction Pressure .. Low Temperature .. Main Fan Overload.. Short Cycle .. Alarms .. of Water Flow .. Detected .. GC Pump On .. Unit On.. Under Floor .. 47 DISCONTINUED P R OD U C OPERATION AND MAINTENANCE, CHECKS AND ADJUSTMENTS.. Testing .. Control Functions .. Panel .. Package .. Impellers and Bearings.. Variable Speed Drive (Inverter).. System .. Oil Level .. Pressure.

7 Pressure.. Superheat .. Expansion Valve .. Gas Bypass Valve .. Cooled Condenser .. Cooled Condensers .. Replacement.. Humidifier .. Generating Humidifier .. Reheat .. INSPECTION CHECKLIST MONTHLY .. MAINTENANCE INSPECTION CHECKLIST SEMIANNUAL .. 71 DISCONTINUED P R OD U C TvFIGURESF igure 1 Advanced microprocessor control panel.. 4 Figure 2 Advanced microprocessor (AM) control menu .. 5 Figure 3 Advanced microprocessor with graphics control panel .. 18 Figure 4 Advanced microprocessor with graphics (AG) control menu .. 19 Figure 5 Analog input jumpers.

8 40 Figure 6 Connecting the LT750.. 41 Figure 7 Hot gas bypass.. 53 Figure 8 Outdoor fan/condenser configuration.. 54 Figure 9 Infrared humidifier lamps .. 58 Figure 10 Steam generating humidifier .. 59 Figure 11 Run/drain switch .. 60 Figure 12 Steam generating humidifier control board .. 63 TABLEST able 1 Default control and alarm setpoints .. 7 Table 2 Setup functions and factory default values .. 8 Table 3 Select options.. 9 Table 4 DIP switch settings .. 9 Table 5 Alarm default time delay .. 11 Table 6 Control output LEDs.. 16 Table 7 Alarm default time delay .. 21 Table 8 Default control and alarm setpoints.

9 23 Table 9 Setup functions and factory default values .. 24 Table 10 Select options.. 25 Table 11 DIP switch settings .. 28 Table 12 Control output LEDs.. 32 Table 13 Changing factory-set sensor inputs.. 40 Table 14 Additional connections available after unit delivery .. 40 Table 15 Suction pressures .. 52 Table 16 Discharge pressures .. 52 Table 17 Humidifier canister part numbers .. 61 Table 18 Faults canister generator humidifier .. 61 Table 19 Steam generating humidifier capacity.. 62 Table 20 DIP switch settings for steam generating humidifier.. 63 Table 21 Blower troubleshooting.

10 64 Table 22 Chilled water troubleshooting .. 64 Table 23 Compressor and refrigeration System troubleshooting.. 65 Table 24 Dehumidification troubleshooting .. 67 Table 25 Glycol pumps troubleshooting .. 67 Table 26 Humidifier steam generator troubleshooting .. 68 Table 27 Humidifier infrared troubleshooting .. 69 Table 28 Reheat troubleshooting.. 69 DISCONTINUED P R OD U C TviDISCONTINUED P R OD U C DescriptionLiebert Deluxe environmental control Systems are available in several configurations. Each configu-ration can operate with either Advanced Microprocessor Controls (AM), or Advanced Microprocessor Controls with Graphics (AG).