Troubleshooting | Liebert 8 Tons, 50 & 60Hz manual

Troubleshooting

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Liebert 8 Tons, 50 & 60Hz user manual Troubleshooting

Contents

Liebert Mini-Mate2 Page Table of Contents Microprocessor Control System Performance Microprocessor Controls Alarms System OPERATION, TESTING, and Maintenance Figures Table iii Heat rejection matchup 60 Hz Table iv Heat rejection matchup 50 HzPage Standard Product Features Optional Equipment Ancillary Ship Loose Accessories Room Preparation Installation ConsiderationsInput Voltage Entering Fluid Temperature Min Application limits, evaporator and chilled-water units Location Considerations Drycooler Evaporator Unit weights System WeightsEquipment Inspection upon receipt Nylock Installing the Evaporator or Chilled-Water UnitsLocking nut Hex nut Close Coupled Installations Nut Clamps are for shipping purposes only Evaporator external static pressure 60 at 3750 CFM 6371 CMH Evaporator Air Distribution Filter BoxConnections for Ducted Systems Hp Motor std Hp Motor opt Turns External Open Drain installation Piping Connections and Coolant Requirements Drain Line Condensate Pump Humidifier Water Supply Line General arrangement diagram chilled-water systems Chilled-Water Piping-Chilled-water Systems Only Recommended refrigerant line sizes Refrigerant R-22 PipingEquivalent Suction Feet Circuit Liquid Line Ton unit refrigerant charge Total refrigerant = Units and LinesQuick Connect Fittings Line charges field piping Optional Filter BOX Power Connections Electrical Connections, Evaporator or Chilled-Water Unit Evaporator unit electrical connections Front of Unit General Considerations DuctingConsiderations for Specific Applications Electrical Connections Condensing Unit Piping ConnectionsControl Connections DPN000248Rev1 Heat rejection connection. Field Outdoor Air-Cooled Condensing Unit Installation Electrical Connections Low voltage Electric service connectionHigh voltage Earth ground connection Footprint Dimensions 152 11-1/2292 Condensing Unit Fluid Requirements Water/Glycol Piping ConsiderationsRegulating Valve Indoor water/glycol condensing unit dimensional data Site Preparation and Installation Two circuits provided. Single circuit shown Optional Equipment Piping Optional free cooling coil 3-way valve on water/glycol units Optional free cooling coil 3-way valve on air-cooled units Checklist for Completed Installation Feature Overview Wall box Main Menu Menu Default setpoints and allowable ranges Active AlarmsAlarm History Setpoints Time Setup OperationRestart Time Delay Date Humidity Control Method Show DIP Switch10.2 C/F Degrees Lead Compressor Setup functions, default values and allowable ranges Change PasswordsAlarm Enable Calibrate Sensors Custom Alarms Alarm Time DelayCommon Alarm Enable Alarm default time delays LCD Display Contrast Equipment Options SwitchesCustom Text Nonvolatile Memory Test Outputs Run DiagnosticsTest Inputs Test Micro TB3-3 Connection to Terminal #3 Wallbox TB3-1 TB3-2 TB3-3 TB4-4 Wall Box DIP SwitchesTB3-4 Connection to Terminal #4 Wallbox TB3-2 Connection to Terminal #2 Wallbox Cooling Control Type Response Proportional ControlReheat Communications Load Control FeaturesDehumidification / Humidification Percent Required Humidification Operation System Activation High Head Pressure Alarms Definitions and TroubleshootingCustom Alarms Air-Cooled Systems High-Water Alarm TemperatureHumidifier Problem Alarm Loss of Power Optional/Custom Alarms Change Filter System Testing Maintenance and Component Operation Discharge Pressure Refrigeration SystemSuction Pressure Thermostatic Expansion Valve Regulating Valves Water/Glycol Condensing Units Glycol Solution MaintenanceHot Gas Bypass Optional Replacement Procedures Steam Generating Humidifier Operation Procedures Replacing the Humidifier Canister Circuit Board AdjustmentsHumidifier control board DIP switch settings Amps Maintenance Inspection Checklist Troubleshooting Display freezes Symptom Possible Cause Check or Remedy Cooling cycle tooShort Control pads Troubleshooting Troubleshooting Troubleshooting Page Tin NetIti That