Troubleshooting | Liebert 8 Tons, 50 & 60Hz specs

Troubleshooting

NOTES

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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 Installation Considerations Input Voltage Entering Fluid Temperature MinRoom Preparation Application limits, evaporator and chilled-water units Location Considerations Drycooler Evaporator Equipment Inspection upon receipt System WeightsUnit weights Locking nut Hex nut Installing the Evaporator or Chilled-Water UnitsNylock Close Coupled Installations Nut Clamps are for shipping purposes only Evaporator Air Distribution Filter Box Connections for Ducted SystemsEvaporator external static pressure 60 at 3750 CFM 6371 CMH 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 Equivalent Suction Feet Circuit Liquid Line Refrigerant R-22 PipingRecommended refrigerant line sizes Total refrigerant = Units and Lines Quick Connect FittingsTon unit refrigerant charge Line charges field piping Optional Filter BOX Power Connections Electrical Connections, Evaporator or Chilled-Water Unit Evaporator unit electrical connections Front of Unit Considerations for Specific Applications DuctingGeneral Considerations Control Connections Piping ConnectionsElectrical Connections Condensing Unit DPN000248Rev1 Heat rejection connection. Field Outdoor Air-Cooled Condensing Unit Installation Electrical Connections Electric service connection High voltageLow voltage Earth ground connection Footprint Dimensions 292 11-1/2152 Regulating Valve Water/Glycol Piping ConsiderationsCondensing Unit Fluid Requirements 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 Active Alarms Alarm HistoryDefault setpoints and allowable ranges Setpoints Setup Operation Restart Time DelayTime Date Show DIP Switch 10.2 C/F DegreesHumidity Control Method Lead Compressor Change Passwords Alarm EnableSetup functions, default values and allowable ranges Calibrate Sensors Alarm Time Delay Common Alarm EnableCustom Alarms Alarm default time delays Equipment Options Switches Custom TextLCD Display Contrast Nonvolatile Memory Test Inputs Run DiagnosticsTest Outputs Test Micro TB3-1 TB3-2 TB3-3 TB4-4 Wall Box DIP Switches TB3-4 Connection to Terminal #4 WallboxTB3-3 Connection to Terminal #3 Wallbox TB3-2 Connection to Terminal #2 Wallbox Reheat Control Type Response Proportional ControlCooling Load Control Features Dehumidification / Humidification Percent RequiredCommunications Humidification Operation System Activation Alarms Definitions and Troubleshooting Custom AlarmsHigh Head Pressure Air-Cooled Systems Temperature Humidifier Problem AlarmHigh-Water Alarm Loss of Power Optional/Custom Alarms Change Filter System Testing Maintenance and Component Operation Refrigeration System Suction PressureDischarge Pressure Thermostatic Expansion Valve Hot Gas Bypass Optional Glycol Solution MaintenanceRegulating Valves Water/Glycol Condensing Units Replacement Procedures Steam Generating Humidifier Operation Procedures Circuit Board Adjustments Humidifier control board DIP switch settingsReplacing the Humidifier Canister Amps Maintenance Inspection Checklist Troubleshooting Symptom Possible Cause Check or Remedy Cooling cycle too ShortDisplay freezes Control pads Troubleshooting Troubleshooting Troubleshooting Page Net ItiTin That