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Emerson MINI-MATE2 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    Precision Cooling For Bu siness-Criti cal C ontinuity™ Li eb er t ® Mi ni -Mate2 ™ Us er Man ual - 5 T ons, 50 & 6 0Hz[...]

  • Page 2

    [...]

  • Page 3

    i T ABLE OF CONTENTS I MPORT AN T S AFE TY I NSTRUC TIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 P RODUCT M ODEL I NFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.0 I NTRODUCTI ON . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 4

    5.6 Outdoor Air-Cooled Condensing Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.6.1 Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 5.6.2 Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 5

    iii 7.3 Load Control Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 7.3.1 Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 8.0 A LARMS . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 6

    Figure 10 Chilled water systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 11 Refrigerant piping diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Figure 12 Evaporator unit dimens ional data .[...]

  • Page 7

    Important Safety Instructions 1L i e b e r t ® Mini-Mate2 ™ I MPORT ANT S AFETY I NSTRUCTIONS SAVE THESE INSTRUCTIONS This manual co ntains important sa fety instructio ns that should be followed durin g the installa tion and maintenance of the Liebert Mini-Mate2. Read this manual thor oughly before attempting to install or operate this unit. On[...]

  • Page 8

    Important Safety Instructions Liebert ® Mini-Mate2 ™ 2 NOTICE Risk of leaking water. Can cause equi pment and building damage. Improper installati on, application and service pr act ices can result in water leakage from the unit. Do not mount this unit over equipment or furniture th at can be damaged by leaking water. Install a watert ight drain[...]

  • Page 9

    Product Model In formation 3L i e b e r t ® Mini-Mate2 ™ P RODUCT M ODEL I NFORMATION Figure 1 Split system evaporators Figure 2 Air-cooled syst ems—indoor centrifugal condensing u nits 7 = R-407C DX Evaporator MMD6 0E7CHELA H = Canister Humidifier 0 = No Humidi fier R = Remote Hum idifier Cont act J = Canister Humidifier & Remote Humidifi[...]

  • Page 10

    Product Model In formation Liebert ® Mini-Mate2 ™ 4 Figure 3 Air-cooled systems—out door prop fan condensing unit s Figure 4 W ater/glycol-cooled syst ems—indoor condensing unit s P F H06 7A-AL7 L = 95°F (35°C) Ambient Liebert Lee-T emp ™ H = 105°F (41°C) Ambient L iebert Lee-T emp Nominal Capacity , kBtuh 0 = St andard Sound Le vel Z [...]

  • Page 11

    Product Model In formation 5L i e b e r t ® Mini-Mate2 ™ Figure 5 Chilled water systems T able 1 System config urations—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 MMD92C Self Contained – Chilled Wate r T[...]

  • Page 12

    Introd uction Liebert ® Mini-Mate2 ™ 6 1.0 I NTRODUCTION 1.1 Designed to Match Computer and Electr onic Equipment Needs—From Inst allation to Operation Installed abov e the ceiling, Liebert Mini-Mat e2 Precision Cooling systems control the coo ling, humidity and air dist ribution required by sensitive electron ic equipment. A range of sizes an[...]

  • Page 13

    S tandard Features—5 T on Systems 7L i e b e r t ® Mini-Mate2 ™ 2.0 S TAN DARD F EATURES —5 T ON S YSTEMS 2.1 Evaporator Section—Split System The evaporator section is designed for ceiling installation. The cabi net and chassis are constructed of heavy gauge galva nized steel. The unit can be serviced using only one side increasing its ver[...]

  • Page 14

    S tandard Features—5 T on Systems Liebert ® Mini-Mate2 ™ 8 2.4 System Controls System controls include a microprocessor control board mounted in the evap orator/chilled water unit and a wall-mounted interfa ce with a two-line, 16-character liquid crystal display. A seven-key, membrane keypad for setp oint/program control, unit On/Off and alarm[...]

  • Page 15

    Optional Factory-Installed Features - Evaporator/Chilled W ater Units 9L i e b e r t ® Mini-Mate2 ™ 3.0 O PTIONAL F ACTORY -I NSTALLED F EATURES - E VAPORATOR /C HILLED W ATER U NIT S 3.1 Reheat Electric Reheat includ es 304/304 stai nless steel finned tubular reheat e lements, with h igh limit safety switch. SCR Electric Reheat uses an SCR cont[...]

  • Page 16

    Optional Factory-Installed Features - Evaporator/Chilled W ater Units Liebert ® Mini-Mate2 ™ 10 3.5 Free-Cooling Free-cooling option includes separa te cooling coil, three-way slow-c lose valve and separa te supply and return piping. Free-coolin g is activated when the water temperature reaches a field-adjustable temperature, typicall y 45°F (7[...]

  • Page 17

    Optional Factory-Installed Features - Evaporator/Chilled W ater Units 11 Liebert ® Mini-Mate2 ™ 3.8 Optional Configuratio ns—Chilled W ater Un it s Chilled Water Units are also available with the following valve options: • Three-way, slow-close, motorized chilled water valve rated for 300 psi (2068kPa ) working pressure. Valve is non-spring [...]

  • Page 18

    Ship-Loose Accesso ries—Field-Installed Liebert ® Mini-Mate2 ™ 12 4.0 S HIP -L OO SE A CCESSORIES —F IELD -I NST ALLED 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) filt ers and a 1" (25.4 mm) duct flange for use on the supply air op[...]

  • Page 19

    Ship-Loose Accesso ries—Field-Installed 13 Liebert ® Mini-Mate2 ™ Liebert SiteScan ® is a monitoring solution tha t gives you decisi on-making po wer to effectively manage the equipment criti cal to your business. Liebert SiteScan enables communica tion from Liebert Precision Cool ing and Power Protection units, as well as many other pieces o[...]

  • Page 20

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 14 5.0 S ITE P REP ARATION AND I NST ALLATION 5.1 Inst allation Considerations The evapora tor unit is u sually mo unted above the suspended ceiling in the space to be conditioned. Ducted systems may be located in a different room. Refer to Figure 8 and Figu re 9 for possib le configurati[...]

  • Page 21

    Site Prepara tion and Installation 15 Liebert ® Mini-Mate2 ™ 5.1.2 Location Considerations Locate the evaporator unit over an unobstructed floor s pace if possible . This will allow easy access for routine maintenance or service. Do not attach additional devices (such as smoke detectors, etc.) to the housing, as they could interfere with the mai[...]

  • Page 22

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 16 Figure 9 W ater/glycol cooled systems Figure 10 Chilled water systems 5.2 Ceiling Unit We ights T able 6 Unit weight s Cooling Units * lb. kg MMD60E 498 226 MMD59E 498 226 MMD92C 498 226 MMD91C 498 226 Condensing Units lb. kg. MCD65A 449 204 MCD64A 449 204 MCD69W 282 128 MCD68W 282 128[...]

  • Page 23

    Site Prepara tion and Installation 17 Liebert ® Mini-Mate2 ™ 5.3 Equipment Inspection Upon Receipt When the unit arrives, do not uncra te equipment until it is close to its final loca tion. All required assemblies are banded and sh ipped in corrug ated containers. If you discover any d amage when you uncrate the unit, report it to the shipper im[...]

  • Page 24

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 18 Connections for Ducted Systems Use flexible duct work or non-flammable cloth coll ar s to attach duct work to the unit and to help control the tran smission of vibra tions to buil ding structures. Insulation of duct work is vital to prevent condensation during the co oling cycle. The u[...]

  • Page 25

    Site Prepara tion and Installation 19 Liebert ® Mini-Mate2 ™ Chilled Water Piping— On chilled water units inst all manual service shut-off valv es 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 su pply and re turn lines must be insula ted. Insula[...]

  • Page 26

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 20 Figure 1 1 Refrigerant piping dia gram Refrigerant Charge Requirement s— Total refrige rant charge will be required onl y if units are evacuated duri ng installation or maintena nce. For safe and effective operation, refer to 5.4.3 - Piping Connections and Coolant Requirements . NOTE[...]

  • Page 27

    Site Prepara tion and Installation 21 Liebert ® Mini-Mate2 ™ T otal refrigerant = Unit s and Lines* Quick Connect Fittings Be especially careful wh en connecting the quick conne ct fittings. Read through the follow ing steps before making the connectio ns. 1. Remo ve protector caps an d plugs. 2. Ca refully wipe coupli ng seats and th readed sur[...]

  • Page 28

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 22 Figure 12 Evaporator unit dimensional dat a DPN000218 Rev. 3 Optional Discharge Air Duct Flange Supplied when Optional Filter Box is Ordered 14 1/2" (368.3mm) Air Outlet Air Inlet 46-1/2" (1 181.1mm) Cabinet Dimension 13-3/8" (339.7mm) 7-5/8" (193.5mm) 3-1/8" ([...]

  • Page 29

    Site Prepara tion and Installation 23 Liebert ® Mini-Mate2 ™ Figure 13 Threaded rod and hardware kit inst allation 5.4.4 Electrical Connections Each unit is shipped from the factory with intern al wiring completed. Refer to electrical schematic when making connections. Electrical connections to be made at the instal lation site are: • Power su[...]

  • Page 30

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 24 Power Connections All power and control wiring and ground connectio ns must be in accordance with the National Electrical Code (NEC) and local co des. Refer to Unit serial tag da ta for electrical requirements. Voltage supplied must agree with the vo ltage specified on th e unit serial[...]

  • Page 31

    Site Prepara tion and Installation 25 Liebert ® Mini-Mate2 ™ Figure 14 Evaporator unit electrical connections Earth Ground Connection terminal for field-supplied earth grounding wire High-V olt Power Connections Electric service connection terminals Factory-installed disconnect switch Remote Humidifier Contact Field-Supplied 24V Class 2 wiring t[...]

  • Page 32

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 26 Figure 15 Close coupled inst allation Evaporator Unit (Lef t) Condensing Unit Evaporator Unit Refrigerant Quick Connect Fittings (Inside Units) Sp acer Between Close-Coup led Evaporator and Condensing Unit (4 places) Condensing Unit (Right)[...]

  • Page 33

    Site Prepara tion and Installation 27 Liebert ® Mini-Mate2 ™ 5.5 Indoor Air-Cooled Centrifugal Fan Condens ing Unit Inst allation 5.5.1 Location Considerations The centrifugal fa n air-cooled condensing unit ma y be located above the dropped ceiling or any remote indoor area. If noise is of concern, the condensing unit should be located away fro[...]

  • Page 34

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 28 Figure 16 Indoor air-cooled centrifugal conde nsing un it dimensions and pipe connection s Field-supplied threaded rods for module support from ceiling (typ. 4) Shaded area indicates a recommended clearance of 30" (762mm) for component access and removal 32" (812.8mm) Cabinet[...]

  • Page 35

    Site Prepara tion and Installation 29 Liebert ® Mini-Mate2 ™ Figure 17 Indoor air-cooled centri fug al condenser electrical connections Field-Supplied Unit Disconnect Switch when Factory Unit Disconnect Switch is not Supplied Electric Service not by Emerson Factory-Installed Disconnect Switch Line V oltage Electric Power Supply Conduit V oltage [...]

  • Page 36

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 30 Figure 18 System piping wit h indoor or out door air-cooled condensing unit DPN000215 Rev . 3 CHILLED W A TER AIR-COOLED (Split System) * * High-Pressure Switch Scroll Compressor Suction Line Male Quick Connect Coupling Liquid Injection V alve Bulb Suction Line Female Quick Connect Cou[...]

  • Page 37

    Site Prepara tion and Installation 31 Liebert ® Mini-Mate2 ™ 5.6 Out door Air-Cooled C ondensing Unit Inst allation 5.6.1 Location Considerations To ensure a satisfactory air supply, locate air-cooled propeller fan co ndensing units in an envi ronment providing clean air, away fro m loose dirt and fore ign matter that may clog th e coil. Condens[...]

  • Page 38

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 32 Figure 20 Dimensions—Air-cooled systems, hi gh amb ient 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 Refer 5.4.4 - Electrical Conne ctions for ge[...]

  • Page 39

    Site Prepara tion and Installation 33 Liebert ® Mini-Mate2 ™ 5.7 Indoor W ater- and Glycol-Coo led Condensing Unit Inst allation 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 located away from pe rsonnel. Norm al operatin[...]

  • Page 40

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 34 Figure 21 Indoor water/glycol c ondensing unit dimensional dat a NOTE: Uni t is evenly spaced i n reference to threaded rod centers. 32" (812.8mm) Cabinet Dimensi on 32" (812.8mm) Cabinet Dimension Field-suppli ed threaded rods for module support from ceiling t yp. 4). 24&quo[...]

  • Page 41

    Site Prepara tion and Installation 35 Liebert ® Mini-Mate2 ™ Figure 22 Indoor water/glycol conden sing unit electrical field connect ions Field-Supplied Unit Disconnect Switch when Factory Unit Disconnect Switch is not Supplied Electric Service not by Emerson Factory-Installed Disconnect Switch Line V oltage Electric Power Supply Conduit V oltag[...]

  • Page 42

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 36 Figure 23 System piping wit h indoor water/glycol co oled 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 operate at the same time as the DX coil. A te m p[...]

  • Page 43

    Site Prepara tion and Installation 37 Liebert ® Mini-Mate2 ™ Figure 24 Optional free-cooling coil (3-way valve) on water/glycol unit s 5.8.2 Hot W ater Reheat Coil Building hot wa ter can be pipe d to a factory-i nstalled hot wate r reheat coil, located do wnstream of the cooling coil. A f actory-installed so lenoid valve opens upon a call for r[...]

  • Page 44

    Site Prepara tion and Installation Liebert ® Mini-Mate2 ™ 38 5.9 Checklist for Completed Inst allation ___ 1. Proper clearance for service access has been maintained around the equipment. ___ 2. Equipment is level and mountin g fasteners are tight. ___ 3. Piping completed to refrig erant or coolant loo p (if require d). Refrigerant ch arge added[...]

  • Page 45

    Microprocessor Control 39 Liebert ® Mini-Mate2 ™ 6.0 M ICROPROCESSOR C ONTROL The Microprocessor Control for the Liebert M ini-Mat e2 unit features an easy to use menu-driven LCD display. The menus, control features and circuit board details are described in this section. Detailed informati on concerning controls ( 7.0 - System Performanc e Micr[...]

  • Page 46

    Microprocessor Control Liebert ® Mini-Mate2 ™ 40 6.2 Main Menu <Menu> Press the MENU key to displ ay the Main Menu. The men u selections (in the follow ing order) include: • SETPOINTS • STATUS • ACTIVE ALARMS •T I M E •D A T E • SETBACK • SETUP OPERATION • SET PASSWORD • SETUP PASSWORD • CALIBRATE SENSOR • ALARM ENABL[...]

  • Page 47

    Microprocessor Control 41 Liebert ® Mini-Mate2 ™ 6.4 St atus The operator can monitor the percentage heatin g, cooling, dehumidifying and humidifying st atus of the unit by selecting the “STATUS” sub-menu. 6.5 Active Alarms The operator can monitor the alarms status by sel ecting “ALARMS” which will display a “No Alarm Present” or ?[...]

  • Page 48

    Microprocessor Control Liebert ® Mini-Mate2 ™ 42 6.9 Setup Operation Selecting Setpoint/Setu p from the Main M enu will displa y the followin g selections: • RESTART TIME DELAY • C/F DEGR EES • HUMIDITY CONTROL METHOD • SHOW DIPSWITCH • CW FLUSH • VALVE TIME Use the Up and Down arrows to s croll through the submenu. Press Enter to se[...]

  • Page 49

    Microprocessor Control 43 Liebert ® Mini-Mate2 ™ 6.9.5 V alve Time (for Systems With a Modulatin g Chilled W ater V alve) This function shows the full valve trave l time of the modulating valve on a chilled water system. This is the time it tak es for the valve to travel from full cl osed to full open. It is programm able from 50 to 250 seconds;[...]

  • Page 50

    Microprocessor Control Liebert ® Mini-Mate2 ™ 44 6.12 Alarm Enable Each alarm can be disabled or enabled. U se the Up and D own arrows to select a particular a larm, press Enter to select either Enable or Disable. Pr ess Enter again to store the change. When t he alarm is disabled it will NOT repo rt to either the wall box beeper or to the commo[...]

  • Page 51

    Microprocessor Control 45 Liebert ® Mini-Mate2 ™ 6.15 Custom Alarms The custom alarm messages ca n be selected from a list of standa rd alarm messages or the operator can write his/her own message. A MAXI MUM OF TWO (2) ALARM MESSAGES CAN BE CUSTOMIZED. The two custom alarm messages will initially displa y the previously pr ogrammed message but [...]

  • Page 52

    Microprocessor Control Liebert ® Mini-Mate2 ™ 46 Equipment Options Switches Equipment options are selected and enabled using DIP switches 1 through 7. These are l ocated on the control board near TB1. These switches are factory- set and should not requi re any user changes. The setting and func tion of the switch es can be indivi dually read o n[...]

  • Page 53

    Microprocessor Control 47 Liebert ® Mini-Mate2 ™ T est Outputs When this featu re is selected, the controller is eff e ctively 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 , the output will remain on for fi ve[...]

  • Page 54

    Microprocessor Control Liebert ® Mini-Mate2 ™ 48 Figure 27 Control menu Status Display 75 F 50%RH NO ALARMS Menu Setpoints Status Active Alarms Tim e Date Setback Setup Operation Setpoint Password Setup Password Calibrate Sensors Alarm Enable Alarm Ti me Delay Common Alarm Enable Custom Alarms Custo m Text Diagnostics End of Menu Setup Password [...]

  • Page 55

    Microprocessor Control 49 Liebert ® Mini-Mate2 ™ Figure 28 Control board—inside eva porator Figure 29 W all 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 — Common Alarm Connection TB1-6 —[...]

  • Page 56

    System Performance Mic roprocessor Contr ols 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 oper ator inputs and room conditions. 7.1 T emperature Control 7.1.1 Cooling/Heating Required The temperature control program for the micropr ocessor is based on[...]

  • Page 57

    System Performance Mic roprocessor Contr ols 51 Liebert ® Mini-Mate2 ™ 7.2.3 Humidification Operation The canister humidifier is activated when the hum idity control calculates a requirement of 100% humidification ; and is deactivated wh en the humidification requirement falls below 50 %. 7.3 Load Control Features The control system monitors the[...]

  • Page 58

    Alarms Liebert ® Mini-Mate2 ™ 52 8.0 A LARMS The microprocessor control system will audibly and vi sually signal all ENABLED Al arms (including two (2) custo m alarms). These sp ecial alarms ca n be chosen from the option al alarm list a nd/or can have their own fully custom text. The cus tom alarm inputs are contact closures wired from termina [...]

  • Page 59

    Alarms 53 Liebert ® Mini-Mate2 ™ Air-Cooled Systems Check for power shut Off to the cond ensing unit, co ndenser fans not worki ng, defective head pressure control valves, closed service valv es, dirty condenser coil s and crimped lines. Also, make sure that when the compressor contactor is energized, the side switch on the contactor closes to e[...]

  • Page 60

    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 incorre ctly turned off before the uni t ON/OFF switch was pressed. A Liebert remote monito ring unit (optiona l) will immediately i ndicate loss of p ower. 8.1.8[...]

  • Page 61

    System Operation, T esting and Maintenance 55 Liebert ® Mini-Mate2 ™ 9.0 S YSTEM O PERATION , T ESTING AND M AINTENANCE This section describes system te sting, maintenance and replacemen t procedures. Use copies of the Maintenance Inspection Checklist to record preventive main tenance inspections. 9.1 System T esting 9.1.1 Environment al Control[...]

  • Page 62

    System Operation, T esting and Maintenance Liebert ® Mini-Mate2 ™ 56 9.2.3 Blower System Monthly inspectio n of the blower pack age include: motor mou nts, belts, fan bearings and imp ellers. Fan impellers should be thorou ghly inspected an d any debri s removed. Check to see if they are tigh tly mounted on the fan shaft and do not ru b against [...]

  • Page 63

    System Operation, T esting and Maintenance 57 Liebert ® Mini-Mate2 ™ Discharge Pressure The discharge pressure wi ll vary greatly with load and ambient con ditions ( Table 23 ). The high- pressure switch will shut the comp ressor down at its cut-out setting. Thermost atic Expansion V alve The thermostatic expansion valve keeps the evaporator sup[...]

  • Page 64

    System Operation, T esting and Maintenance Liebert ® Mini-Mate2 ™ 58 Hot Gas Byp ass Operation The hot gas bypass valve is installed between th e compressor discharge piping and sucti on piping, bypassing the condenser and ev aporator coils. The discharge gas mixes with the suction ga s, raising the suction te mperature and pre ssure and decreas[...]

  • Page 65

    System Operation, T esting and Maintenance 59 Liebert ® Mini-Mate2 ™ 9.3 Replacement Procedures 9.3.1 Compressor Replacement Infrequently a fault in the motor insulation may re sult in a motor burnout (if system is properly installed, motor burnout rarely oc curs). Primarily this type of failure is due to mechanical or lubrication problems, wher[...]

  • Page 66

    System Operation, T esting and Maintenance Liebert ® Mini-Mate2 ™ 60 Replace a Failed Compressor Proper procedures to remove and replace the failed compressor are: 1. Disconnect power 2. Attach suction and discharg e gauges to access fittings. 3. Recover refrigerant using standard recovery proc edures and equipment. Use a filter-drier when charg[...]

  • Page 67

    System Operation, T esting and Maintenance 61 Liebert ® Mini-Mate2 ™ 9.3.3 Stea m Generating Humidifier-Operation Procedures Steam generati ng humidifie rs operat e efficiently over a wide range of water quality conditions and automatically adjust to ch anges in the conductivity of water. Th e system will automatical ly drain and refill to maint[...]

  • Page 68

    System Operation, T esting and Maintenance Liebert ® Mini-Mate2 ™ 62 Replacing the Humidifier Canister The proper procedure to replac e the humidifier canister is: 1. Turn off the humidifier by lowering the humidity set point below the ambient humidity lev el. Record the original setpoint. 2. Place the RUN/DR AIN switch in the DRAIN position to [...]

  • Page 69

    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:______ __________________ ____________ Model #:_[...]

  • Page 70

    Trou bleshooting Liebert ® Mini-Mate2 ™ 64 11 . 0 T ROUBLESHOOTING T able 25 T roubleshooting 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 re set circuit breaker. Float switch relay closed because of high w[...]

  • Page 71

    Trou bleshooting 65 Liebert ® Mini-Mate2 ™ Cooling cycle too short Sensor response delay too short Increa se sensor response delay. See 6.11 - Calibrate Sensors . Display fr eezes and control pads do not respond Static disc harge During period of low humidity, static electri city can cause the control program to freeze or display incorrect infor[...]

  • Page 72

    Ensuring The Hi gh Av aila bilit y Of Mission-Critic al Data And Ap plic ations. Emerson Net work Po wer , a business of Emer son (NYSE:EMR), is the global leader in enabling Business-Critic al Continuity ™ from grid to chip f or telecommunication networks, data centers, health care and industrial facilities. Emerson Network Po wer provides inno [...]