Emerson 3000 Motorized Ball Valve-Digital Scroll Compressors, Manual Flushing, Control

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Water-Cooled Models—Self-Contained Compressor

4.3.2High Pressure Valve - 350 psig (2413 kPa) System for 3-Ton Units (Metrex Valve) Adjustment

The valve may be adjusted using a 1/8" diameter rod. Turn the adjusting collar nut counterclockwise to raise head pressure; turn it clockwise to lower head pressure. Rotation directions are viewed from top of valve spring housing.

Figure 22 Metrex Valve adjustment

Adjusting collar nut

Table 12 Refrigerant control settings psi (kPa)

Low Pressure

Low Pressure

High Pressure

Cut Out

Cut In

Cut Out

 

 

 

20 (137.9)

65 (448.2)

400 (2758)

 

 

 

Manual Flushing

The valve may be flushed by rotating the socket head screw clockwise. This screw must be in the OUT position (counterclockwise) for normal valve operation.

4.4Motorized Ball Valve—Digital Scroll Compressors

On digital scroll units, discharge pressure is controlled by a motorized ball valve. During unloaded operation, the pressure changes during each digital cycle could cause excessive repositions with a pressure-operated water regulating valve. The control algorithm for the motorized ball valve uses an intelligent sampling rate and adjustable pressure thresholds to reduce valve repositions. The valve assembly consists of the brass valve, linkage and actuator.

4.4.1Control

The valve actuator operates on 24VAC power and is controlled by a 2-10VDC proportional control signal. The valve will move from fully open to fully closed in 60 seconds. At 2VDC, the valve is closed; at 10VDC, the valve is fully open. There is a 20-second delay to position the motorized ball valve before starting the compressor.

Liebert® Challenger 3000™

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Contents Liebert Challenger 3000 with Liebert iCOM Page Table of Contents Chilled Water Models Split System ModelsFigures R407C RefrigerantTables Important Safety Instructions Liebert Challenger Important Safety Instructions System Descriptions Centrifugal Fan Air-Cooled Split SystemsProp Fan Air-Cooled Water-CooledLocation Considerations Room PreparationEquipment Inspection Equipment HandlingRemoval of Skid Unit net weightHandling With Skid Model Lb. kgUpflow BU cabinet dimensions Floor Cutout Dimensions Drain Line Piping ConsiderationsPiping connection size Piping connections for air-cooled units Downflow models Chilled Water Unit Connection Sizes-inPiping connections for air-cooled units Upflow models Installation Applicable to all Models Condensate Pump Line 1/2 OD CU used only Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Electrical Connections Facility Fluid and Piping MaintenanceHumidifier Supply Water-Optional Infrared Terminal Block For Customer Connectons Upflow Models with Liebert iCOM Downflow Models with Liebert iCOMUnder-Floor Discharge Systems Plenum InstallationBalancing the Air Distribution Ducted ApplicationsChecklist for Completed Installation Line Voltage Condenser LocationLow Voltage Liebert Lee-Tempheater Common to all models. See below for key to a dimensionAir-cooled condenser statistics 43-9/16 51-7/16Refrigerant Piping Equivalent lengths feet for various pipe fittings Recommended line sizes OD copper, inchesCondenser refrigerant per serial tag Variable Fan Speed Control Piping Fan Speed Control SystemsVariable Fan Speed Control Materials Supplied Fan speed suction pressure transducer settings Variable Fan Speed ChargingDPN000349 Rev DPN001726 Liebert Lee-Temp Piping Liebert Lee-Temp Leak Check and Evacuation ProcedureLiebert Lee-Temp Controlled Materials Supplied Liebert Lee-TempCharging Liebert Lee-Temp suction pressure transducer settings407C Factory Piping Optional Piping Field Piping DPN001725 Condenser Factory Piping Field Piping Factory Piping Adjustment Water Regulating ValveManual Flushing Refrigerant control settings psi kPaMotorized Ball Valve-Digital Scroll Compressors ControlLocation Control MethodStartup Manual ControlDrycooler Location Drycooler InstallationPump and Drycooler Glycol Piping General GuidelinesRoom dew point temperatures Dry Bulb Wet Bulb Relative Dew Point HumidityExpansion Tanks, Fluid Relief Valves and Other Devices Volume in standard Type L copper pipingFilling Instructions Preparing the System for FillingGlycol Solutions Ethylene glycol concentrationsFilling the System See Note 30-1/4 For expansion tank dimensions, see on43-3/16 43-9/16 110 5mm 483mm 1097mmGlycol pump data Mounting hole dimensional dataDrycooler data Pump Pump Suction Pump Discharge Connection,Field Piping General arrangement-Glycol-cooled models with digital scroll Expansion Tank Field-Installed at Pressure Glycol Regulating Valve Testing Valve FunctionMotor Ball Valve-Digital Scroll Compressors Chilled Water Models WAY Valve Air-Cooled Condensing Units Water/Glycol-Cooled Condensing UnitsRefrigerant Loop R407C Charge Unit refrigerant chargeModel Lb kg Recommended refrigerant lines R407C sizes OD copper Line charges refrigerant per 100 ft m of Type L copper tubeLine coupling sizes Quick Connect Fittings Unit Dimensions See Table Outdoor Air-Cooled Condensing UnitsPFCZ42A-L PFCZ41A-L Outdoor air-cooled condensing unit-top air discharge models See Table36-1/4 38-1/2 Piping and electrical connections top air discharge152 Field-supplied unit disconnect switch Ton High Ambient Ton Quiet-LineCentrifugal Air-Cooled Condensing Units Installing the Indoor Condensing UnitModel Net Weight 60 Hz 50 Hz Lb kg MC40A MC39A Indoor centrifugal condensing unitDucting Airflow CFM CMHPiping Connections Rev0 Wire connections from evaporatorDPN000207 ModTon centrifugal air-cooled condensing unit dimensional data AIR Cooled Water Cooled Ton Connection Sizes Water and Glycol-Cooled Condensing UnitsPiping Considerations Condenser Water RequirementsGlycol Systems Ton water/glycol-cooled condensing unitDPN000209 Ton water/glycol-cooled condensing unit dimensional data WATER/GLYCOL Temperature Gauge Pressure Psig KPa R407C RefrigerantCalculating Subcooling Temperature Pressure Gauge Psig KPaExample Page Twor k Ne tPpor t Is t Care
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3000 specifications

The Emerson 3000 is a cutting-edge control system designed to enhance the efficiency, reliability, and precision of industrial operations. Employed across various sectors such as oil and gas, pharmaceutical, food and beverage, and power generation, the Emerson 3000 has gained recognition for its robustness and versatility.

One of the main features of the Emerson 3000 is its advanced process control capability. With integrated control algorithms, it can optimize complex processes in real-time, resulting in significant improvements in production rates and reduced operational costs. The system's predictive analytics capabilities enable operators to anticipate equipment failures and maintenance needs, allowing for proactive management and minimizing downtime.

The Emerson 3000 features a modular architecture, providing flexibility for scaling and customization. Operators can easily tailor the system to fit specific application needs, whether it requires additional control loops or integration with other systems. This adaptability is particularly beneficial for facilities planning for future expansions or modifications.

Another technology highlight of the Emerson 3000 is its seamless integration with the latest Internet of Things (IoT) advancements. The system is designed to communicate effectively with a variety of smart devices and sensors, harnessing data to create insightful analytics that drive operational excellence. This connectivity empowers businesses to leverage big data for improved decision-making and increased agility.

Additionally, the Emerson 3000 incorporates state-of-the-art cybersecurity measures to safeguard critical data and operations. With built-in security protocols and regular updates, the system protects against emerging cyber threats, ensuring the integrity of the control network.

User experience is also a focal point of the Emerson 3000. The intuitive graphical user interface presents complex data in a user-friendly format, making it easier for operators to monitor system performance and respond to alerts quickly. This ease of use contributes to enhanced safety and operational efficiency.

In summary, the Emerson 3000 represents a fusion of advanced process control, modular design, IoT connectivity, robust cybersecurity, and user-centric interface, making it an ideal choice for industries seeking to enhance their operational performance while adapting to ever-evolving technological landscapes.
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