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Liebert 8 Tons, 50 & 60Hz user manual Troubleshooting

Models: 50 & 60Hz 8 Tons

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Liebert 8 Tons, 50 & 60Hz user manual Troubleshooting

Contents

Liebert Mini-Mate2 UserManual -8 Tons,50& 60HzPrecision Cooling For Business-CriticalContinuityPage TABLE OF CONTENTS 3.0 MICROPROCESSOR CONTROL 5.0 ALARMS FIGURES TABLESTable iv Heat rejection matchup - 50 Hz MODEL NUMBER NOMENCLATURETable iii Heat rejection matchup - 60 Hz Page 1.0PRODUCT FEATURES 1.1.1ControlsChilled-WaterModel 1.1.3Condensing Unit Components1.2.1Canister Humidifier 1.2.2Electric Reheat1.2.3SCR Electric Reheat 1.2.4Hot Gas Bypass Condensing Units1.3.1Single Point Power Kit 1.3.2Refrigerant Line Sweat Adapter Kits1.3.3Return Air Filter Box with Duct Collar Kit 1.3.4Condensate Pump Kit2.1.1Room Preparation 2.1Installation Considerations2.0SITE PREPARATION AND INSTALLATION Site Preparation and Installation 2.1.2Location ConsiderationsFigure 1 System configurations-aircooled systems Site Preparation and InstallationEvaporator Evaporator2.2System Weights Unit weights2.3Equipment Inspection upon receipt Evaporator2. Use the Nylock nuts to “jam” the plain nuts 2.4.1Close Coupled Installations Figure 5 Close coupled installationConnections for Ducted Systems Site Preparation and Installation2.4.2Evaporator Air Distribution Filter Box Figure 6 Drain installation Site Preparation and InstallationFigure 7 Condensate pump installation Condensate PumpHumidifier Water Supply Line AIR INLETChilled-Water Piping-Chilled-waterSystems Only DPN000236 Rev0Recommended refrigerant line sizes Figure 9 Refrigerant piping diagramRefrigerant R-22Piping Total refrigerant = Units and Lines Quick Connect FittingsTable 7 8-tonunit refrigerant charge Line charges field pipingFRONT OF UNIT OPTIONAL FILTER BOXDPN000240 Rev0 Power Connections Site Preparation and Installation Evaporator unit electrical connectionsSite Preparation and Installation 2.5.1Location Considerations2.5.2Ducting General ConsiderationsPower Connections Site Preparation and Installation2.5.3Piping Connections 2.5.4Electrical Connections - Condensing UnitDPN000248 Rev1 Site Preparation and Installation Heat rejection connection.FieldPower Connections 2.6.1Location Considerations2.6.2Piping Connections 2.6.3Electrical ConnectionsElectric service connection DPN000135 Rev0High voltage Low voltageDPN000131 Rev0 FOOTPRINT DIMENSIONSSite Preparation and Installation Site Preparation and Installation SL-11081Page72.7.1Location Considerations 2.7.2Piping ConnectionsWater/Glycol Piping Considerations Condensing Unit Fluid RequirementsSite Preparation and Installation Site Preparation and Installation SL-11088Pg7 Site Preparation and InstallationTwo circuits provided. Single circuit shown 2.8Optional Equipment Piping 2.8.1Free-CoolingCoil GLYCOOLSite Preparation and Installation 2.9Checklist for Completed Installation Figure 23 Wall box 3.1Feature Overview3.0MICROPROCESSOR CONTROL 3.2Main Menu Menu 3.5Active Alarms 3.6Alarm HistoryTable 10 Default setpoints and allowable ranges 3.3Setpoints3.10Setup Operation 3.10.1Restart Time Delay3.7Time 3.8Date3.10.5Show DIP Switch 3.10.2C/F Degrees3.10.3Humidity Control Method 3.10.4Lead Compressor3.12Calibrate Sensors 3.11Change Passwords3.13Alarm Enable 3.14Alarm Time Delay 3.15Common Alarm Enable3.16Custom Alarms Table 13 Alarm default time delaysEquipment Options Switches Table 15 Switch settings wallbox board3.17Custom Text LCD Display Contrast3.18Run Diagnostics Test OutputsTest Inputs Fan turned on with all loadsMicroprocessor Control Test MicroFigure 24 Control menu Page 4.0SYSTEM PERFORMANCE MICROPROCESSOR CONTROLS 4.2.2Chilled-WaterCooling 8 Ton4.2.3GLYCOOL Cooling 8 Ton 4.3.1Electric Reheat - Staged4.5Load Control Features 4.6Communications4.4.2Humidification Operation System Activation 4.4.3Dehumidification Lockout5.0ALARMS 5.1.1Custom Alarms5.1.2High Head Pressure Air-CooledSystems5.1.4Temperature 5.1.5Humidifier Problem Alarm5.1.6High-WaterAlarm 5.1.7Loss of Power5.2Optional/Custom Alarms 5.2.1Change Filter5.2.2Firestat 5.2.3Smoke Detector6.0SYSTEM OPERATION, TESTING, AND MAINTENANCE 6.1.1Environmental Control Functions6.1.2Cooling 6.1.3Heating6.2.1Electric Panel 6.2.2Filters6.2.3Blower System Air Distribution6.2.4Electric Reheat 6.2.5Refrigeration SystemSuction Pressure Discharge PressureGlycol Solution Maintenance AdjustmentRegulating Valves Water/Glycol Condensing Units Hot Gas Bypass OptionalReplacement Procedures System Operation, Testing, and Maintenance 6.2.7Circuit Board Adjustments Replacing the Humidifier Canister7.0MAINTENANCE INSPECTION CHECKLIST FILTERSBLOWER SECTION REHEATTroubleshooting 8.0TROUBLESHOOTINGTable 18 Troubleshooting Table 18 Troubleshooting continued TroubleshootingTroubleshooting Troubleshooting Troubleshooting Page Ensuring The High Availability 0f Mission-CriticalData And Applicationsthat from