Emerson VE, VH, DE, DH manual Air Cooled Condenser, Outdoor fan/condenser configuration

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Component Operation and Maintenance, Checks and Adjustments

7.4.7Air Cooled Condenser

Restricted airflow through the condenser coil will reduce the operating efficiency of the unit and can result in high compressor head pressure and loss of cooling.

Clean the condenser coil of all debris that will inhibit air flow. This can be done with compressed air or commercial coil cleaner. Check for bent or damaged coil fins and repair as necessary. In winter, do not permit snow to accumulate around the sides or underneath the condenser.

Check all refrigerant lines and capillaries for vibration isolation. Support as necessary. Visually inspect all refrigerant lines for signs of oil leaks.

Checking Refrigerant Charge (Lee–Temp™/ Flood Back Head Pressure Control)

The system refrigerant level must be periodically checked. This is easily done by the following proce- dure:

1.Adjust temperature setpoint in the unit so that the compressor will run continuously.

2.The refrigerant level is visible through two sight glasses on the receiver, and will vary with ambient temperature.

a.40°F (4.4°C) and lower – Midway on the bottom sight glass.

b.40 to 60°F (4.4 to 15.6°C) – Bottom sight glass should be clear with liquid.

c.60°F (15.6°C) and above – Midway on the top sight glass.

3.Return temperature setpoint to desired number.

Figure 8 Outdoor fan/condenser configuration

Lee-Temp Heater Pad

Connection Boxes

Secure each leg to condenser frame at all points shown using hardware provided

Fan Motor M1

Inverted Traps by Others

Hot Gas Line

Electric Service

Supplied by Others Liquid Line

Fan Motor FS

 

Inverted Traps

 

by Others

 

Hot Gas Line

 

Electric Service

Liquid Line

Supplied by Others

 

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Contents Liebert Deluxe System/3 Page Table of Contents Main Menu AG-Run Diagnostics Alarm Descriptions and Solutions Temperature ControlSystem Testing Figures Page System Description IntroductionDual Source Cooling Systems Chilled Water SystemsGlycool Chilled Glycol Cooling Systems Initial START-UP Procedure Additional Considerations for Upflow UnitsDisplay the Main Menu-AM Control Advanced Microprocessor Controls SetupBasics Advanced microprocessor AM control menu Alarm History Log Main Menu AM-Status/Alarm DataActive Alarms Operating StatusDefault control and alarm setpoints Main Menu AM-Setpoints/SetupSetup System Selection Analog SensorsFunction Default Range Setup OperationSetup functions and factory default values Select Options Show DIP SwitchesDIP switch settings Calibrate SensorsSetup Alarms Select Control TypeAlarm default time delay Alarm Default Delay secondsHumidity Control Method Standard Alarm MessagesAnalog Setup Calibrate Actuator Run DiagnosticsSet Status Display Show InputsTest Outputs Change PasswordsMain Menu AM-Date and Time Test Control BoardControl Circuit Board Load Control FeaturesMain Menu AM-Status Display Nonvolatile Memory DIP SwitchesCommunications Control OutputsMonitor functions View/Change FunctionsAdvanced Microprocessor with Graphics Control Setup Advanced microprocessor with graphics control panelAdvanced microprocessor with graphics AG control menu Main Menu AG-Status Display Main Menu AG-View/Set AlarmsDisplay the Main Menu-AG Control Default Time Delay Alarm SecondsSetup Water Detect Floor Plan Set Up Custom AlarmsStandard Custom Alarm Messages Installation-LT750 DIP Switch SettingsMain Menu AG-View/Set Control Setpoints Main Menu AG-Setup SystemMain Menu AG-Operating Status Default Settings and Ranges Cold Start DelayAuto Restart Delay IR Flush Overfill infrared humidifiers onlyCalibrate Valve Actuator Select Control AlgorithmMain Menu AG-Run Diagnostics Select Humidity Sensing ModeShow Inputs Main Menu AG-Plot Graphs Dehumidification with Normal or Delayed ReheatMain Menu AG-Date and Time Main Menu AG-Analog/Digital Inputs Read Digital Inputs Set Up Digital InputsMain Menu AG-View Run Hours Log View 24 Hour Run Time HistoryControl Circuit Board On/Off Status Time View Only Silence Alarm Temperature Control Response by Control TYPE-ADVANCED Microprocessor ControlsChilled Water Cooling Glycool CoolingDual Cooling Source Heating Operation Electric ReheatDehumidification/Humidification Required, in Percent % Humidity ControlHot Water/Steam Heat Control Types Proportional ControlHumidification Operation System Activation Dual Cooling Source DehumidificationChilled Water Dehumidification Suggested System Tuning Procedure Intelligent Control Load Control Features Changing factory-set sensor inputs Connecting the Analog SensorsAnalog Sensors Additional connections available after unit deliveryPhysical Connections SetupWater Detection Display Calibration View/Change Functions Change Filter Standard AlarmsAlarm Descriptions and Solutions Compressor OverloadHigh Temperature and Low Temperature Simultaneously Custom Alarms Only With Advanced ControlsHigh Temperature Humidifier Problem Infrared HumidifiersLoss of Air Flow Loss of PowerLow Temperature Low HumidityOptional/Custom Alarms Environmental Control Functions System TestingComponent Operation and MAINTENANCE, Checks and Adjustments Proportional Heating/Cooling/ DehumidificationControl Transformer and Fuses Fan Safety SwitchElectric Panel FirestatFan Impellers and Bearings FiltersBlower Package BeltsCompressor Oil Level Refrigeration SystemElectronic Variable Speed Drive Inverter Suction Superheat Suction PressureDischarge Pressure Thermostatic Expansion Valve OperationAdjustment Hot Gas Bypass Valve OperationOutdoor fan/condenser configuration Air Cooled CondenserGlycol Solution Maintenance Adjustment Johnson Controls/Penn Johnson valvesTesting Function of Valve Water/Glycol Cooled Condensers Shell and Tube CondensersElectrical Failure Compressor ReplacementMechanical Failure Infrared Humidifier Compressor Replacement ProcedureHumidifier Autoflush Operation Autoflush Infrared Humidifier Cleaning SystemChanging Humidifier Lamps Humidifier lampsSteam Generating Humidifier Steam generating humidifierControls Replacing the CanisterPriority Name LED Indication Description Faults-canister generator humidifierHumidifier canister part numbers Capacity Circuit Board AdjustmentsSteam generating humidifier capacity Hz Models Lbs/hr kg/hrVoltage AMP Set Pt Electric ReheatUnit Rated Rated Values Voltage Capacity Chilled water troubleshooting TroubleshootingBlower troubleshooting Symptom Possible Cause Check or RemedyCompressor and refrigeration system troubleshooting Compressor and refrigeration system troubleshooting Dehumidification troubleshooting Glycol pumps troubleshootingHumidifier-steam generator troubleshooting Adjustments onHumidifier-infrared troubleshooting Reheat troubleshootingMaintenance Inspection CHECKLIST-MONTHLY Maintenance Inspection CHECKLIST-SEMIANNUAL Ti n Ne tIti That

VE, DH, VH, DE specifications

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