Troubleshooting | Liebert 50 & 60Hz, 8 Tons guide

Troubleshooting

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Liebert 50 & 60Hz, 8 Tons user manual Troubleshooting

Contents

Liebert Mini-Mate2 Page Table of Contents System Performance Microprocessor Controls Microprocessor Control System OPERATION, TESTING, and Maintenance Alarms Figures Table iv Heat rejection matchup 50 Hz Table iii Heat rejection matchup 60 HzPage Standard Product Features Optional Equipment Ancillary Ship Loose Accessories Input Voltage Entering Fluid Temperature Min Installation ConsiderationsRoom Preparation Application limits, evaporator and chilled-water units Location Considerations Drycooler Evaporator System Weights Unit weightsEquipment Inspection upon receipt Installing the Evaporator or Chilled-Water Units NylockLocking nut Hex nut Nut Clamps are for shipping purposes only Close Coupled Installations Connections for Ducted Systems Evaporator Air Distribution Filter BoxEvaporator external static pressure 60 at 3750 CFM 6371 CMH Hp Motor std Hp Motor opt Turns External Open Piping Connections and Coolant Requirements Drain Line Drain installation Humidifier Water Supply Line Condensate Pump Chilled-Water Piping-Chilled-water Systems Only General arrangement diagram chilled-water systems Refrigerant R-22 Piping Recommended refrigerant line sizesEquivalent Suction Feet Circuit Liquid Line Quick Connect Fittings Total refrigerant = Units and LinesTon unit refrigerant charge Line charges field piping Optional Filter BOX Electrical Connections, Evaporator or Chilled-Water Unit Power Connections Front of Unit Evaporator unit electrical connections Ducting General ConsiderationsConsiderations for Specific Applications Piping Connections Electrical Connections Condensing UnitControl Connections DPN000248Rev1 Heat rejection connection. Field Electrical Connections Outdoor Air-Cooled Condensing Unit Installation High voltage Electric service connectionLow voltage Earth ground connection Footprint Dimensions 11-1/2 152292 Water/Glycol Piping Considerations Condensing Unit Fluid RequirementsRegulating Valve Indoor water/glycol condensing unit dimensional data Site Preparation and Installation Two circuits provided. Single circuit shown Optional free cooling coil 3-way valve on water/glycol units Optional Equipment Piping Optional free cooling coil 3-way valve on air-cooled units Checklist for Completed Installation Wall box Feature Overview Main Menu Menu Alarm History Active AlarmsDefault setpoints and allowable ranges Setpoints Restart Time Delay Setup OperationTime Date 10.2 C/F Degrees Show DIP SwitchHumidity Control Method Lead Compressor Alarm Enable Change PasswordsSetup functions, default values and allowable ranges Calibrate Sensors Common Alarm Enable Alarm Time DelayCustom Alarms Alarm default time delays Custom Text Equipment Options SwitchesLCD Display Contrast Nonvolatile Memory Run Diagnostics Test OutputsTest Inputs Test Micro TB3-4 Connection to Terminal #4 Wallbox TB3-1 TB3-2 TB3-3 TB4-4 Wall Box DIP SwitchesTB3-3 Connection to Terminal #3 Wallbox TB3-2 Connection to Terminal #2 Wallbox Control Type Response Proportional Control CoolingReheat Dehumidification / Humidification Percent Required Load Control FeaturesCommunications Humidification Operation System Activation Custom Alarms Alarms Definitions and TroubleshootingHigh Head Pressure Air-Cooled Systems Humidifier Problem Alarm TemperatureHigh-Water Alarm Loss of Power Change Filter Optional/Custom Alarms System Testing Maintenance and Component Operation Suction Pressure Refrigeration SystemDischarge Pressure Thermostatic Expansion Valve Glycol Solution Maintenance Regulating Valves Water/Glycol Condensing UnitsHot Gas Bypass Optional Replacement Procedures Steam Generating Humidifier Operation Procedures Humidifier control board DIP switch settings Circuit Board AdjustmentsReplacing the Humidifier Canister Amps Maintenance Inspection Checklist Troubleshooting Short Symptom Possible Cause Check or Remedy Cooling cycle tooDisplay freezes Control pads Troubleshooting Troubleshooting Troubleshooting Page Iti NetTin That