Page 3 - TABLE OF CONTENTS
i TABLE OF CONTENTS I MPORTANT S AFETY I NSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 P RODUCT M ODEL I NFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.0 I NTRODUCTION ...
Page 5 - FIGURES
iii 7.3 Load Control Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 7.3.1 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 8.0 A LARMS...
Page 6 - TABLES
Figure 10 Chilled water systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 11 Refrigerant piping diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Page 7 - MPORTANT; SAVE THESE INSTRUCTIONS; WARNING; discharge lines, humidifiers and reheats.
Important Safety Instructions 1 Liebert ® Mini-Mate2 ™ I MPORTANT S AFETY I NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual contains important safety instructions that should be followed during the installation and maintenance of the Liebert Mini-Mate2. Read this manual thoroughly before attempting ...
Page 8 - NOTICE; temperatures and contact damage.; CAUTION; the unit for installation.
Important Safety Instructions Liebert ® Mini-Mate2 ™ 2 NOTICE Risk of leaking water. Can cause equipment and building damage.Improper installation, application and service practices can result in water leakage from the unit. Do not mount this unit over equipment or furniture that can be damaged by l...
Page 9 - RODUCT; Figure 1; M M D 60 E 7 C H E L A
Product Model Information 3 Liebert ® Mini-Mate2 ™ P RODUCT M ODEL I NFORMATION Figure 1 Split system evaporators Figure 2 Air-cooled systems—indoor centrifugal condensing units 7 = R-407C DX Evaporator M M D 60 E 7 C H E L A H = Canister Humidifier 0 = No Humidifier R = Remote Humidifier Contact J ...
Page 10 - Figure 3; Nominal Capacity, kBtuh
Product Model Information Liebert ® Mini-Mate2 ™ 4 Figure 3 Air-cooled systems—outdoor prop fan condensing units Figure 4 Water/glycol-cooled systems—indoor condensing units PFH 0 67 A - A L 7 L = 95°F (35°C) Ambient Liebert Lee-Temp ™ H = 105°F (41°C) Ambient Liebert Lee-Temp Nominal Capacity, kBtu...
Page 11 - M M D 92 C 2 C H E L A
Product Model Information 5 Liebert ® Mini-Mate2 ™ Figure 5 Chilled water systems Table 1 System configurations—60 Hz Nominal Capacity Cooling Unit Condensing Unit Indoor Air-Cooled Centrifugal Fan Outdoor Air-Cooled Propeller Fan Indoor Water/ Glycol 5 Tons MMD60E MCD65A PFH067A MCD69W 5 Tons MMD92...
Page 12 - NTRODUCTION; guarantee satisfaction from installation through operation.; US
Introduction Liebert ® Mini-Mate2 ™ 6 1.0 I NTRODUCTION 1.1 Designed to Match Computer and Electronic Equipment Needs—From Installation to Operation Installed above the ceiling, Liebert Mini-Mate2 Precision Cooling systems control the cooling, humidity and air distribution required by sensitive elec...
Page 13 - TANDARD; Evaporator Section—Split System; Indoor Centrifugal Fan Condensing Units; head pressure control system, hot gas bypass and liquid-; Chilled Water Units
Standard Features—5 Ton Systems 7 Liebert ® Mini-Mate2 ™ 2.0 S TANDARD F EATURES —5 T ON S YSTEMS 2.1 Evaporator Section—Split System The evaporator section is designed for ceiling installation. The cabinet and chassis are constructed of heavy gauge galvanized steel. The unit can be serviced using o...
Page 14 - System Controls; System controls
Standard Features—5 Ton Systems Liebert ® Mini-Mate2 ™ 8 2.4 System Controls System controls include a microprocessor control board mounted in the evaporator/chilled water unit and a wall-mounted interface with a two-line, 16-character liquid crystal display. A seven-key, membrane keypad for setpoin...
Page 15 - Reheat
Optional Factory-Installed Features - Evaporator/Chilled Water Units 9 Liebert ® Mini-Mate2 ™ 3.0 O PTIONAL F ACTORY -I NSTALLED F EATURES - E VAPORATOR /C HILLED W ATER U NITS 3.1 Reheat Electric Reheat includes 304/304 stainless steel finned tubular reheat elements, with high limit safety switch. ...
Page 16 - circulated fluid. Not available with SCR reheat options.; Figure 7; Optional Configurations—Prop Fan Condensing Units; Outdoor Prop Fan Condensing Units; are also available in the following optional configurations:; Optional Configurations—Water/Glycol Condensing Units; Indoor Water/Glycol Condensing Units; are also available with the following piping options:; NOTE; cooling coil allows the system to take
Optional Factory-Installed Features - Evaporator/Chilled Water Units Liebert ® Mini-Mate2 ™ 10 3.5 Free-Cooling Free-cooling option includes separate cooling coil, three-way slow-close valve and separate supply and return piping. Free-cooling is activated when the water temperature reaches a field-a...
Page 17 - Optional Configurations—Chilled Water Units; are also available with the following valve options:
Optional Factory-Installed Features - Evaporator/Chilled Water Units 11 Liebert ® Mini-Mate2 ™ 3.8 Optional Configurations—Chilled Water Units Chilled Water Units are also available with the following valve options: • Three-way, slow-close, motorized chilled water valve rated for 300 psi (2068kPa) w...
Page 18 - HIP; Remote Monitoring, Autochangeover and Leak Detection Equipment
Ship-Loose Accessories—Field-Installed Liebert ® Mini-Mate2 ™ 12 4.0 S HIP -L OOSE A CCESSORIES —F IELD -I NSTALLED Filter Box includes filter box with 1" (25.4mm) duct flange connection, quantity 2, 20" x 20" x 4" nominal (508mm x 508mm x 102mm) filters and a 1" (25.4 mm) duct f...
Page 19 - package one or two Liebert IntelliSlot
Ship-Loose Accessories—Field-Installed 13 Liebert ® Mini-Mate2 ™ Liebert SiteScan ® is a monitoring solution that gives you decision-making power to effectively manage the equipment critical to your business. Liebert SiteScan enables communication from Liebert Precision Cooling and Power Protection ...
Page 20 - ITE; Installation Considerations; Ducted systems may be located in a different room. Refer to; Figure 8; and; Figure 9; for possible; Table 5; conditioned room is the vapor barrier.
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 14 5.0 S ITE P REPARATION AND I NSTALLATION 5.1 Installation Considerations The evaporator unit is usually mounted above the suspended ceiling in the space to be conditioned. Ducted systems may be located in a different room. Refer to Figure 8...
Page 21 - housing, as they could interfere with the maintenance or service.
Site Preparation and Installation 15 Liebert ® Mini-Mate2 ™ 5.1.2 Location Considerations Locate the evaporator unit over an unobstructed floor space if possible. This will allow easy access for routine maintenance or service. Do not attach additional devices (such as smoke detectors, etc.) to the h...
Page 22 - Ceiling Unit Weights; Table 6
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 16 Figure 9 Water/glycol cooled systems Figure 10 Chilled water systems 5.2 Ceiling Unit Weights Table 6 Unit weights Cooling Units * lb. kg MMD60E 498 226 MMD59E 498 226 MMD92C 498 226 MMD91C 498 226 Condensing Units lb. kg. MCD65A 449 204 MC...
Page 23 - Equipment Inspection Upon Receipt; Weights; Filter Box; The units must be level in order to drain condensate properly.
Site Preparation and Installation 17 Liebert ® Mini-Mate2 ™ 5.3 Equipment Inspection Upon Receipt When the unit arrives, do not uncrate equipment until it is close to its final location. All required assemblies are banded and shipped in corrugated containers. If you discover any damage when you uncr...
Page 24 - Connections for Ducted Systems; reduce available static pressure.; Piping Connections and Coolant Requirements; Humidifier Water Supply Line; Table 7
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 18 Connections for Ducted Systems Use flexible duct work or non-flammable cloth collars to attach duct work to the unit and to help control the transmission of vibrations to building structures. Insulation of duct work is vital to prevent cond...
Page 25 - Chilled Water Piping—; specified in the condensing unit installation instructions.; Refrigerant R-407C Piping—; • Close coupling the units together using the quick connects. (See; Table 8
Site Preparation and Installation 19 Liebert ® Mini-Mate2 ™ Chilled Water Piping— On chilled water units install manual service shut-off valves at the supply and return lines of each unit. These shut-off valves are used for routine service or emergency isolation of the unit.Chilled water supply and ...
Page 26 - Figure 11 Refrigerant piping diagram; Refrigerant Charge Requirements—; Total refrigerant charge will be required only if units are; Connections and Coolant Requirements; Evaporator; This
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 20 Figure 11 Refrigerant piping diagram Refrigerant Charge Requirements— Total refrigerant charge will be required only if units are evacuated during installation or maintenance. For safe and effective operation, refer to 5.4.3 - Piping Connec...
Page 27 - Quick Connect Fittings; bodies “bottom out” or until a definite resistance is felt.; Refrigerant charge
Site Preparation and Installation 21 Liebert ® Mini-Mate2 ™ Total refrigerant = Units and Lines* Quick Connect Fittings Be especially careful when connecting the quick connect fittings. Read through the following steps before making the connections.1. Remove protector caps and plugs.2. Carefully wip...
Page 28 - Figure 12 Evaporator unit dimensional data
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 22 Figure 12 Evaporator unit dimensional data DPN000218Rev. 3 Optional Discharge AirDuct Flange Suppliedwhen Optional Filter Boxis Ordered 14 1/2" (368.3mm) Air Outlet Air Inlet 46-1/2" (1181.1mm) Cabinet Dimension 13-3/8" (339.7mm...
Page 29 - Figure 13 Threaded rod and hardware kit installation; • Power supply to each ceiling unit.; switch and check the internal power supply wires with a voltmeter.
Site Preparation and Installation 23 Liebert ® Mini-Mate2 ™ Figure 13 Threaded rod and hardware kit installation 5.4.4 Electrical Connections Each unit is shipped from the factory with internal wiring completed. Refer to electrical schematic when making connections. Electrical connections to be made...
Page 30 - Power Connections; ). This kit should be mounted inside the condensing unit; Control Connections
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 24 Power Connections All power and control wiring and ground connections must be in accordance with the National Electrical Code (NEC) and local codes. Refer to Unit serial tag data for electrical requirements. Voltage supplied must agree with...
Page 31 - Figure 14 Evaporator unit electrical connections
Site Preparation and Installation 25 Liebert ® Mini-Mate2 ™ Figure 14 Evaporator unit electrical connections Earth Ground Connectionterminal for field-suppliedearth grounding wire High-Volt Power ConnectionsElectric service connection terminals Factory-installeddisconnect switch Remote Humidifier Co...
Page 32 - Figure 15 Close coupled installation; Condensing Unit
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 26 Figure 15 Close coupled installation Evaporator Unit (Left) Condensing Unit Evaporator Unit Refrigerant Quick Connect Fittings (Inside Units) Spacer Between Close-Coupled Evaporator and Condensing Unit (4 places) Condensing Unit (Right)
Page 33 - Indoor Air-Cooled Centrifugal Fan Condensing Unit Installation; If the condensing unit draws air from the outside of the building,; Refer to serial tag for full load amp and wire size amp ratings
Site Preparation and Installation 27 Liebert ® Mini-Mate2 ™ 5.5 Indoor Air-Cooled Centrifugal Fan Condensing Unit Installation 5.5.1 Location Considerations The centrifugal fan air-cooled condensing unit may be located above the dropped ceiling or any remote indoor area. If noise is of concern, the ...
Page 34 - AIR-COOLED DIMENSIONAL DATA
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 28 Figure 16 Indoor air-cooled centrifugal condensing unit dimensions and pipe connections Field-supplied threadedrods for module supportfrom ceiling (typ. 4) Shaded area indicates arecommended clearance of30" (762mm) for componentaccess a...
Page 35 - Line Voltage; AIR COOLED
Site Preparation and Installation 29 Liebert ® Mini-Mate2 ™ Figure 17 Indoor air-cooled centrifugal condenser electrical connections Field-Supplied Unit DisconnectSwitch when Factory UnitDisconnect Switch is notSupplied Electric Service notby Emerson Factory-InstalledDisconnect Switch Line Voltage E...
Page 36 - CHILLED WATER
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 30 Figure 18 System piping with indoor or outdoor air-cooled condensing unit DPN000215Rev. 3 CHILLED WATER AIR-COOLED(Split System) * * High-PressureSwitch Scroll Compressor Suction Line Male QuickConnect Coupling Liquid InjectionValve Bulb Su...
Page 37 - Outdoor Air-Cooled Condensing Unit Installation
Site Preparation and Installation 31 Liebert ® Mini-Mate2 ™ 5.6 Outdoor Air-Cooled Condensing Unit Installation 5.6.1 Location Considerations To ensure a satisfactory air supply, locate air-cooled propeller fan condensing units in an environment providing clean air, away from loose dirt and foreign ...
Page 38 - Details for refrigerant loop piping are in; between the evaporator and condensing unit.
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 32 Figure 20 Dimensions—Air-cooled systems, high ambient and Quiet-Line condensing module 5.6.2 Piping Connections Details for refrigerant loop piping are in 5.4.3 - Piping Connections and Coolant Requirements . 5.6.3 Electrical Connections Re...
Page 39 - Indoor Water- and Glycol-Cooled Condensing Unit Installation; Glycol; Water/Glycol Piping Considerations; Automotive antifreeze must not be used in glycol systems.; Regulating Valve
Site Preparation and Installation 33 Liebert ® Mini-Mate2 ™ 5.7 Indoor Water- and Glycol-Cooled Condensing Unit Installation 5.7.1 Location Considerations The condensing unit may be located above the dropped ceiling or any remote indoor area. If noise is of concern, the condensing unit should be loc...
Page 40 - Figure 21 Indoor water/glycol condensing unit dimensional data; WATER/GLYCOL DIMENSIONAL DATA
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 34 Figure 21 Indoor water/glycol condensing unit dimensional data NOTE: Unit is evenly spaced in reference to threaded rod centers. 32" (812.8mm) Cabinet Dimension 32" (812.8mm) Cabinet Dimension Field-supplied threadedrods for module ...
Page 42 - Optional Equipment Piping
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 36 Figure 23 System piping with indoor water/glycol cooled condensing unit 5.8 Optional Equipment Piping 5.8.1 Free-Cooling Coil The free-cooling coil is a secondary coil located downstream of the DX coil. The free-coiling coil does not operat...
Page 44 - Checklist for Completed Installation
Site Preparation and Installation Liebert ® Mini-Mate2 ™ 38 5.9 Checklist for Completed Installation ___ 1. Proper clearance for service access has been maintained around the equipment.___ 2. Equipment is level and mounting fasteners are tight.___ 3. Piping completed to refrigerant or coolant loop (...
Page 45 - ICROPROCESSOR; Detailed information concerning controls (; - System Performance Microprocessor Controls; Feature Overview; Figure 26 Wall box; also be selected from the Main Menu.
Microprocessor Control 39 Liebert ® Mini-Mate2 ™ 6.0 M ICROPROCESSOR C ONTROL The Microprocessor Control for the Liebert Mini-Mate2 unit features an easy to use menu-driven LCD display. The menus, control features and circuit board details are described in this section. Detailed information concerni...
Page 46 - function press Enter.; Setpoints; the Main Menu will display the following selections:
Microprocessor Control Liebert ® Mini-Mate2 ™ 40 6.2 Main Menu <Menu> Press the MENU key to display the Main Menu. The menu selections (in the following order) include: • SETPOINTS• STATUS• ACTIVE ALARMS• TIME• DATE• SETBACK• SETUP OPERATION• SET PASSWORD• SETUP PASSWORD• CALIBRATE SENSOR• ALA...
Page 47 - Status; the unit by selecting the “STATUS” sub-menu.; Active Alarms; while the “YY” reference is the total number of alarms activated).; Time; FOR THE DATE AND TIME FEATURES.; Date; arrows to change the second character, etc.; Setback; The following table can be used to devise a setback plan.; Default setpoints and allowable ranges
Microprocessor Control 41 Liebert ® Mini-Mate2 ™ 6.4 Status The operator can monitor the percentage heating, cooling, dehumidifying and humidifying status of the unit by selecting the “STATUS” sub-menu. 6.5 Active Alarms The operator can monitor the alarms status by selecting “ALARMS” which will dis...
Page 48 - Setup Operation; Use the Up and Down arrows to scroll through the submenu. Press; Enter; to select a particular
Microprocessor Control Liebert ® Mini-Mate2 ™ 42 6.9 Setup Operation Selecting Setpoint/Setup from the Main Menu will display the following selections: • RESTART TIME DELAY• C/F DEGREES• HUMIDITY CONTROL METHOD• SHOW DIPSWITCH• CW FLUSH• VALVE TIME Use the Up and Down arrows to scroll through the su...
Page 49 - any contaminants that may have collected in the system.; Change Passwords; Setup functions, default values and allowable ranges; Function
Microprocessor Control 43 Liebert ® Mini-Mate2 ™ 6.9.5 Valve Time (for Systems With a Modulating Chilled Water Valve) This function shows the full valve travel time of the modulating valve on a chilled water system. This is the time it takes for the valve to travel from full closed to full open. It ...
Page 50 - Alarm Time Delay; for the default times. The; Common Alarm Enable; again to select Yes or No.; the factory default of 0.; Alarm default time delays; Alarm
Microprocessor Control Liebert ® Mini-Mate2 ™ 44 6.12 Alarm Enable Each alarm can be disabled or enabled. Use the Up and Down arrows to select a particular alarm, press Enter to select either Enable or Disable. Press Enter again to store the change. When the alarm is disabled it will NOT report to e...
Page 51 - alarm message desired and store it by pressing Enter.; LCD Display Contrast; potentiometer screw, inside the wall box next to the display.; Nonvolatile Memory; inside the microcontroller in EEPROM.
Microprocessor Control 45 Liebert ® Mini-Mate2 ™ 6.15 Custom Alarms The custom alarm messages can be selected from a list of standard alarm messages or the operator can write his/her own message. A MAXIMUM OF TWO (2) ALARM MESSAGES CAN BE CUSTOMIZED. The two custom alarm messages will initially disp...
Page 52 - Equipment Options Switches
Microprocessor Control Liebert ® Mini-Mate2 ™ 46 Equipment Options Switches Equipment options are selected and enabled using DIP switches 1 through 7. These are located on the control board near TB1. These switches are factory-set and should not require any user changes. The setting and function of ...
Page 53 - Test Outputs; troubleshooting; Test Control Board; firmware revision number.; Fan turned on with all loads.
Microprocessor Control 47 Liebert ® Mini-Mate2 ™ Test Outputs When this feature is selected, the controller is effectively turned off. When stepping from one load to the next, the previous load is automatically turned off. The loads can also be toggled On and Off by selecting “ENTER.” Once turned on...
Page 54 - Figure 27 Control menu
Microprocessor Control Liebert ® Mini-Mate2 ™ 48 Figure 27 Control menu Status Display 75 F 50%RH NO ALARMS Menu Setpoints Status Active Alarms Time Date Setback Setup Operation Setpoint Password Setup Password Calibrate Sensors Alarm Enable Alarm Time Delay Common Alarm Enable Custom Alarms Custom ...
Page 55 - Figure 28 Control board—inside evaporator
Microprocessor Control 49 Liebert ® Mini-Mate2 ™ Figure 28 Control board—inside evaporator Figure 29 Wall box board TB2-4 — Hot Gas Bypass TB2-3 — High Head Alarm Connection TB2-2 — Heat Rejection TB2-1 — Heat Rejection TB1-9 — Condensate Pump Aux Alarm TB1-8 — Condensate Pump Aux Alarm TB1-7 — Comm...
Page 56 - YSTEM; Temperature Control; Electric Heat or Hot Water; Humidity Control; Cooling and dehumidification load response of hot gas bypass; Situation
System Performance Microprocessor Controls Liebert ® Mini-Mate2 ™ 50 7.0 S YSTEM P ERFORMANCE M ICROPROCESSOR C ONTROLS This section describes in detail how the Mini-Mate2 responds to operator inputs and room conditions. 7.1 Temperature Control 7.1.1 Cooling/Heating Required The temperature control ...
Page 57 - Load Control Features
System Performance Microprocessor Controls 51 Liebert ® Mini-Mate2 ™ 7.2.3 Humidification Operation The canister humidifier is activated when the humidity control calculates a requirement of 100% humidification; and is deactivated when the humidification requirement falls below 50%. 7.3 Load Control...
Page 58 - LARMS; be enabled or disabled (refer to; Alarms: Definitions and Troubleshooting; to
Alarms Liebert ® Mini-Mate2 ™ 52 8.0 A LARMS The microprocessor control system will audibly and visually signal all ENABLED Alarms (including two (2) custom alarms). These special alarms can be chosen from the optional alarm list and/or can have their own fully custom text. The custom alarm inputs a...
Page 59 - Check for proper
Alarms 53 Liebert ® Mini-Mate2 ™ 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, th...
Page 60 - increase temperature sensitivity to reduce cycle.; Optional/Custom Alarms; smoke and follow appropriate emergency procedures.
Alarms Liebert ® Mini-Mate2 ™ 54 8.1.7 Loss of Power The Loss of Power Alarm will activate (after power is restored to the unit) if the unit has lost power or the disconnect switch was incorrectly turned off before the unit ON/OFF switch was pressed. A Liebert remote monitoring unit (optional) will ...
Page 61 - System Testing; of the main functions.; Maintenance and Component Operation
System Operation, Testing and Maintenance 55 Liebert ® Mini-Mate2 ™ 9.0 S YSTEM O PERATION , T ESTING AND M AINTENANCE This section describes system testing, maintenance and replacement procedures. Use copies of the Maintenance Inspection Checklist to record preventive maintenance inspections. 9.1 S...
Page 62 - Air Distribution; disconnecting all power and control wiring entering the panel.; Suction Pressure
System Operation, Testing and Maintenance Liebert ® Mini-Mate2 ™ 56 9.2.3 Blower System Monthly inspection of the blower package include: motor mounts, belts, fan bearings and impellers.Fan impellers should be thoroughly inspected and any debris removed. Check to see if they are tightly mounted on t...
Page 63 - Discharge Pressure; fouled and should be replaced.; Glycol Solution Maintenance; products from different manufacturers.; Typical discharge pressure; System Design
System Operation, Testing and Maintenance 57 Liebert ® Mini-Mate2 ™ Discharge Pressure The discharge pressure will vary greatly with load and ambient conditions ( Table 23 ). The high- pressure switch will shut the compressor down at its cut-out setting. Thermostatic Expansion Valve The thermostatic...
Page 64 - Operation; equalized and superheat is not adjustable.; Adjustment; is within the range desired.; Figure 30 Hot gas bypass
System Operation, Testing and Maintenance Liebert ® Mini-Mate2 ™ 58 Hot Gas Bypass Operation The hot gas bypass valve is installed between the compressor discharge piping and suction piping, bypassing the condenser and evaporator coils. The discharge gas mixes with the suction gas, raising the sucti...
Page 65 - Replacement Procedures; Mechanical Failure; occurred, the oil will be black and acidic.
System Operation, Testing and Maintenance 59 Liebert ® Mini-Mate2 ™ 9.3 Replacement Procedures 9.3.1 Compressor Replacement Infrequently a fault in the motor insulation may result in a motor burnout (if system is properly installed, motor burnout rarely occurs). Primarily this type of failure is due...
Page 66 - Replace a Failed Compressor; charging the system with recovered refrigerant.
System Operation, Testing and Maintenance Liebert ® Mini-Mate2 ™ 60 Replace a Failed Compressor Proper procedures to remove and replace the failed compressor are:1. Disconnect power2. Attach suction and discharge gauges to access fittings.3. Recover refrigerant using standard recovery procedures and...
Page 67 - and goes to normal operation. No drain is permitted until then.
System Operation, Testing and Maintenance 61 Liebert ® Mini-Mate2 ™ 9.3.3 Steam Generating Humidifier-Operation Procedures Steam generating humidifiers operate efficiently over a wide range of water quality conditions and automatically adjust to changes in the conductivity of water. The system will ...
Page 68 - Replacing the Humidifier Canister; Record the original setpoint.; Humidifier Circuit Board Adjustments; Humidifier control board DIP switch settings; Voltage
System Operation, Testing and Maintenance Liebert ® Mini-Mate2 ™ 62 Replacing the Humidifier Canister The proper procedure to replace the humidifier canister is:1. Turn off the humidifier by lowering the humidity setpoint below the ambient humidity level. Record the original setpoint. 2. Place the R...
Page 69 - AINTENANCE; Make photocopies of this form for your records; may be required to meet specific application requirements.
Maintenance Inspection Checklist 63 Liebert ® Mini-Mate2 ™ 10.0 M AINTENANCE I NSPECTION C HECKLIST Liebert Mini-Mate2 Signature:________________________________________________________________ Make photocopies of this form for your records Date:____________________________________ Prepared By:_____...
Page 70 - ROUBLESHOOTING; Troubleshooting; set point
Troubleshooting Liebert ® Mini-Mate2 ™ 64 11.0 T ROUBLESHOOTING Table 25 Troubleshooting Symptom Possible Cause Check Or Remedy Unit will not start No power to unit Check voltage at input terminal block. Control voltage circuit breaker (at transformer) open Locate short and reset circuit breaker. Fl...
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