Emerson MINI-MATE2 Air-Cooled Systems, Water/Glycol/ Systems, Humidity Level, Temperature

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Alarms

Air-Cooled Systems

Check for power shut Off to the condensing unit, condenser fans not working, defective head pressure control valves, closed service valves, dirty condenser coils and crimped lines. Also, make sure that when the compressor contactor is energized, the side switch on the contactor closes to energize the control circuit on the condensing unit.

Water/Glycol/ Systems

Check water regulating valves. Verify water/glycol flow (i.e., pumps operating and service valves open). Is water tower or drycooler operating? Is the coolant temperature entering the condenser at or below design conditions? Is AUX relay (terminals 70 & 71) operating during cooling to turn on the drycooler?

8.1.3Humidity Level

The humidity level alarm may be activated under the following conditions:

•High: The room return air humidity exceeds the pre-set high humidity alarm set point. Is the unit set up for dehumidification? Check DIP switch.

•Low: The room return air humidity decreases to the low humidity alarm set point. Is the unit setup for humidification? Check DIP switch.

•High and Low Humidity (simultaneously): The simultaneous display of two alarms results in loss of the humidity input signal. DASHES WILL BE DISPLAYED IN THE HUMIDITY READING DISPLAY. Under these conditions, the control system deactivates both humidification and dehumidification. Check for a disconnected cable or failed sensor.

NOTE

Check for proper setpoints. Does the room have a vapor barrier to seal it from outdoor humidity? Are doors or windows open to outside air?

8.1.4Temperature

The temperature level alarm may be activated under the following conditions:

•High: The room return air temperature increases to the high temperature alarm set point. Check for proper set point value. Is the room load more than the unit can handle (i.e., capacity too small)? Make sure cooling components are operating (compressor or valves).

•Low: The room return air temperature decreases to the low temperature alarm set point. Check for proper set point value. Make sure all heating components are operating (e.g., contactors, reheats, etc.). Are reheats drawing the proper current (refer to amp rating on nameplate).

•High and Low (simultaneously): The simultaneous display of these two alarms results in loss of the temperature input signal (or the humidity is out of sensor range-15 to 85% RH). Dashes will be displayed for the temperature reading. The control system will initiate 100% cooling. Check for a disconnected cable or a failed sensor.

8.1.5Humidifier Problem Alarm

The Humidifier Problem Alarm will sound and display a message if any of the following humidifier conditions occur: overcurrent detection; fill system fault or end of cylinder life.

Check fault indicator LED on humidifier control board:

•Constant LED on = Overcurrent

•1 second LED Flash = Fill System

•1/2 second LED Flash = Replace Tank

8.1.6High Water Alarm

A float switch in the evaporator pan will shutdown the evaporator on a high water level. Clear the drain and reset power to the unit in order to clear the alarm.

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Liebert® Mini-Mate2™

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Contents Liebert Mini-Mate2 Page Table of Contents System Performance Microprocessor Controls Microprocessor ControlSystem OPERATION, Testing and Maintenance AlarmsTables Important Safety Instructions Liebert Mini-Mate2 Air-cooled systems-indoor centrifugal condensing units Product Model InformationPFH 0 67 a a L System configurations-50 Hz System configurations-60 HzIntroduction Chilled Water Units Standard FEATURES-5 TON SystemsEvaporator Section-Split System Condensing Unit Section-Split SystemSystem Controls Other Standard Control FeaturesSensors Switches and MotorsReheat HumidifierFree-Cooling Optional Configurations-Prop Fan Condensing UnitsOptional Configurations-Water/Glycol Condensing Units Optional Configurations-Chilled Water Units SHIP-LOOSE ACCESSORIES-FIELD-INSTALLED Ship-Loose Accessories-Field-Installed Room Preparation Installation ConsiderationsSite Preparation and Installation Air-cooled systems Location ConsiderationsCooling Units Ceiling Unit WeightsUnit weights Cooling DrycoolerEvaporator Air Distribution Filter Box Installing the Ceiling UnitsClose Coupled Installations Equipment Inspection Upon ReceiptEvaporator external static pressure Connections for Ducted SystemsPiping Connections and Coolant Requirements Drain Line Humidifier Water Supply LineCopper Pipe Recommended refrigerant line sizesEquivalent lengths for various pipe fittings, ft m Equivalent Pipe Liquid Suction Length, ft mVertical fall below evaporator Pipe length and condenser elevation relative to evaporatorVertical rise above evaporator/maximum Line charges refrigerant per 100 ft m of Type L copper tube Total refrigerant = Units and LinesQuick Connect Fittings Refrigerant chargeDPN000218 Electrical Connections Threaded rod and hardware kit installationControl Connections Power ConnectionsEvaporator unit electrical connections Close coupled installation Considerations for Specific Applications Piping ConnectionsDucting General ConsiderationsAIR-COOLED Dimensional Data AIR Cooled AIR-COOLED Model # 60Hz 50Hz Outdoor Air-Cooled Condensing Unit InstallationWeight, lb kg Rev Regulating Valve Water/Glycol Piping ConsiderationsCondensing Unit Fluid Requirements WATER/GLYCOL Dimensional Data WATER/GLYCOL DPN000214 Optional free-cooling coil 3-way valve on water/glycol units Hot Water Reheat CoilChecklist for Completed Installation Microprocessor Control Feature OverviewSetpoints Main Menu MenuDate Active AlarmsStatus Time2 C/F Degrees Setup OperationRestart Time Delay Show DIP SwitchCalibrate Sensors Change PasswordsSetup functions, default values and allowable ranges Function Default RangeAlarm default time delays Alarm EnableAlarm Time Delay Common Alarm EnableLCD Display Contrast Custom AlarmsStandard Custom Alarm Messages Custom TextSwitch settings wall box board Run Diagnostics Available On Rev 1.001.0 and higherEquipment Options Switches Equipment switch settings unit control boardTest Control Board Test OutputsControl menu Wall box board Control board-inside evaporatorSystem Performance Microprocessor Controls Temperature ControlHumidity Control Communications Load Control FeaturesHumidification Operation High Head Pressure Alarms Definitions and TroubleshootingAlarms Custom AlarmsAir-Cooled Systems TemperatureHumidifier Problem Alarm High Water AlarmOptional/Custom Alarms System OPERATION, Testing and Maintenance System TestingMaintenance and Component Operation Refrigeration System Blower SystemAir Distribution Blower RemovalAir-Cooled Condensing Units Glycol Solution MaintenanceDischarge Pressure Thermostatic Expansion ValveHot gas bypass Hot Gas BypassElectrical Failure Replacement ProceduresCompressor Replacement Mechanical FailureReplace a Failed Compressor Steam Generating Humidifier-Operation Procedures Amps Humidifier Circuit Board AdjustmentsHumidifier control board DIP switch settings Replacing the Humidifier CanisterMaintenance Inspection Checklist Troubleshooting TroubleshootingDisplay freezes Symptom Possible Cause Check Or Remedy Cooling cycle tooDisplay Problem ShortCare Ne tPpor t Is t Twor k

MINI-MATE2 specifications

The Emerson MINI-MATE2 is a cutting-edge temperature and pressure monitoring device specifically designed for the needs of the refrigeration and HVAC industries. Known for its reliability and user-friendly interface, this compact unit serves as a key tool for technicians and facility managers looking to optimize system performance while ensuring compliance with safety standards.

One of the main features of the MINI-MATE2 is its advanced digital display, which allows users to easily monitor and interpret temperature and pressure readings in real-time. Its highly responsive sensors ensure accurate data collection, vital for maintaining optimal operating conditions. Moreover, the device supports a wide range of refrigerants, making it versatile for different applications, from walk-in coolers to commercial refrigeration systems.

The MINI-MATE2 utilizes state-of-the-art technology to enhance efficiency and performance. Equipped with Bluetooth connectivity, it allows for wireless communication with mobile devices, enabling technicians to track readings and receive alerts remotely. This feature not only improves convenience but also helps in quick decision-making, ensuring timely interventions when anomalies are detected.

Another significant characteristic is its robust construction. Built to withstand harsh environments, the MINI-MATE2 features a durable casing that protects it from physical impacts and environmental factors. This resilience ensures longevity, making it a cost-effective investment for any facility.

In addition, the MINI-MATE2 is designed with user-friendliness in mind. Its intuitive interface means that even technicians with limited experience can easily navigate its functionalities. Quick setup and straightforward operation allow for rapid adoption and extensive use in a variety of settings.

Finally, the MINI-MATE2 also includes built-in data logging capabilities. Users can record historical data for analysis and reporting purposes, which is essential for performing trend analysis and identifying potential issues before they escalate. By providing a comprehensive overview of system performance, the MINI-MATE2 empowers users to make informed decisions that can lead to improved energy efficiency and reduced operational costs.

Overall, the Emerson MINI-MATE2 is an indispensable tool for modern refrigeration and HVAC applications, combining cutting-edge technology, user-friendly design, and essential features to support efficient system management.
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