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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

Precision Cooling Liebert Mini-Mate2UserManual -8 Tons,50& 60Hz For Business-CriticalContinuityPage TABLE OF CONTENTS 3.0 MICROPROCESSOR CONTROL 5.0 ALARMS FIGURES TABLESTable iii Heat rejection matchup - 60 Hz MODEL NUMBER NOMENCLATURETable iv Heat rejection matchup - 50 Hz Page Chilled-WaterModel 1.0PRODUCT FEATURES1.1.1Controls 1.1.3Condensing Unit Components1.2.3SCR Electric Reheat 1.2.1Canister Humidifier1.2.2Electric Reheat 1.2.4Hot Gas Bypass Condensing Units1.3.3Return Air Filter Box with Duct Collar Kit 1.3.1Single Point Power Kit1.3.2Refrigerant Line Sweat Adapter Kits 1.3.4Condensate Pump Kit2.0SITE PREPARATION AND INSTALLATION 2.1Installation Considerations2.1.1Room Preparation Site Preparation and Installation 2.1.2Location ConsiderationsEvaporator Figure 1 System configurations-aircooled systemsSite Preparation and Installation Evaporator2.3Equipment Inspection upon receipt 2.2System WeightsUnit weights Evaporator2. Use the Nylock nuts to “jam” the plain nuts 2.4.1Close Coupled Installations Figure 5 Close coupled installation2.4.2Evaporator Air Distribution Filter Box Site Preparation and InstallationConnections for Ducted Systems Figure 6 Drain installation Site Preparation and InstallationHumidifier Water Supply Line Figure 7 Condensate pump installationCondensate Pump AIR INLETChilled-Water Piping-Chilled-waterSystems Only DPN000236 Rev0Refrigerant R-22Piping Figure 9 Refrigerant piping diagramRecommended refrigerant line sizes Table 7 8-tonunit refrigerant charge Total refrigerant = Units and LinesQuick Connect Fittings Line charges field pipingDPN000240 Rev0 OPTIONAL FILTER BOXFRONT OF UNIT Power Connections Site Preparation and Installation Evaporator unit electrical connections2.5.2Ducting Site Preparation and Installation2.5.1Location Considerations General Considerations2.5.3Piping Connections Power ConnectionsSite Preparation and Installation 2.5.4Electrical Connections - Condensing UnitDPN000248 Rev1 Site Preparation and Installation Heat rejection connection.Field2.6.2Piping Connections Power Connections2.6.1Location Considerations 2.6.3Electrical ConnectionsHigh voltage Electric service connectionDPN000135 Rev0 Low voltageSite Preparation and Installation FOOTPRINT DIMENSIONSDPN000131 Rev0 Site Preparation and Installation SL-11081Page7Water/Glycol Piping Considerations 2.7.1Location Considerations2.7.2Piping Connections Condensing Unit Fluid RequirementsSite Preparation and Installation Site Preparation and Installation Two circuits provided. Single circuit shown Site Preparation and InstallationSL-11088Pg7 2.8Optional Equipment Piping 2.8.1Free-CoolingCoil GLYCOOLSite Preparation and Installation 2.9Checklist for Completed Installation 3.0MICROPROCESSOR CONTROL 3.1Feature OverviewFigure 23 Wall box 3.2Main Menu Menu Table 10 Default setpoints and allowable ranges 3.5Active Alarms3.6Alarm History 3.3Setpoints3.7Time 3.10Setup Operation3.10.1Restart Time Delay 3.8Date3.10.3Humidity Control Method 3.10.5Show DIP Switch3.10.2C/F Degrees 3.10.4Lead Compressor3.13Alarm Enable 3.11Change Passwords3.12Calibrate Sensors 3.16Custom Alarms 3.14Alarm Time Delay3.15Common Alarm Enable Table 13 Alarm default time delays3.17Custom Text Equipment Options SwitchesTable 15 Switch settings wallbox board LCD Display ContrastTest Inputs 3.18Run DiagnosticsTest Outputs Fan turned on with all loadsFigure 24 Control menu Test MicroMicroprocessor Control Page 4.2.3GLYCOOL Cooling 8 Ton 4.0SYSTEM PERFORMANCE MICROPROCESSOR CONTROLS4.2.2Chilled-WaterCooling 8 Ton 4.3.1Electric Reheat - Staged4.4.2Humidification Operation System Activation 4.5Load Control Features4.6Communications 4.4.3Dehumidification Lockout5.1.2High Head Pressure 5.0ALARMS5.1.1Custom Alarms Air-CooledSystems5.1.6High-WaterAlarm 5.1.4Temperature5.1.5Humidifier Problem Alarm 5.1.7Loss of Power5.2.2Firestat 5.2Optional/Custom Alarms5.2.1Change Filter 5.2.3Smoke Detector6.1.2Cooling 6.0SYSTEM OPERATION, TESTING, AND MAINTENANCE6.1.1Environmental Control Functions 6.1.3Heating6.2.3Blower System 6.2.1Electric Panel6.2.2Filters Air DistributionSuction Pressure 6.2.4Electric Reheat6.2.5Refrigeration System Discharge PressureRegulating Valves Water/Glycol Condensing Units Glycol Solution MaintenanceAdjustment Hot Gas Bypass OptionalReplacement Procedures System Operation, Testing, and Maintenance 6.2.7Circuit Board Adjustments Replacing the Humidifier CanisterBLOWER SECTION 7.0MAINTENANCE INSPECTION CHECKLISTFILTERS REHEATTable 18 Troubleshooting 8.0TROUBLESHOOTINGTroubleshooting Table 18 Troubleshooting continued TroubleshootingTroubleshooting Troubleshooting Troubleshooting Page that Ensuring The High Availability0f Mission-CriticalData And Applications from