Installation & Maintenance Instructions MODEL MX75 3”

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Installation & Maintenance InstructionsMODEL MX753” OVAL GEARFLOWMETERSupplied by.comCall us on 44 (0)118 916 9420 Email info@247able.com

MXL-INST75Rev 106/2013MODEL MX753” OVAL GEAR FLOWMETERINSTRUCTION MANUALTo the OwnerPlease read and retain this instruction manual toassist you in the operation and maintenance of this product.Macnaught offer a comprehensive set web basedsupport materials to compliment this instructionmanual.Access the website by scanning the QR code below.This manual contains connection and operating instructions for the MX series Flowmeters with Pulseoutputs.Models with a Liquid Crystal Display have an additional LCD instruction manual supplied. If you needfurther assistance, contact your local representativeor distributor for advice.This Flow Meter has incorporated the oval rotor principal into its design. This is proven to be a reliableand highly accurate method of measuring flow.Exceptional repeatability and high accuracy over awide range of fluid viscosities and flow rates arefeatures of the oval rotor design.With a low pressure drop and high pressure ratingoval rotor flow meters are suitable for both gravityand (in-line) pump applications.WWW.MACNAUGHT.COM.AUPage 1 of 20

indexInstallationPre-installation checks .Page 3Operating Principle .Page 3Installation Procedure .Page 3Maintenance ProcedureDisassembly .Page 4Reassembly .Page 4Flowmeter Specifications .Page 5Electrical Specifications .Page 5Wiring Diagram - Standard Pulser .Page 6Wiring Diagram - PCB sensor .Page 7Flowmeter SpecificationsWiring Diagram - Intrinsically Safe SwitchWiring Diagram - High Temperature Switch. .Page 8 .Page 9ServiceTroubleshooting Guide .Page 10Maintenance Resources .Page 10Exploded Diagram .Page 11Spare Parts Kits .Page 12Wetted Parts .Page 13Pressure Drop Graphs .Page 14Dimensional Diagrams .Page 15-16GeneralPage 2 of 20

IMPORTANT INFORMATIONINSTALLATION PROCEDUREFLUID COMPATABILITYBefore use, confirm the fluid to be used iscompatible with the meter. Refer to Industryfluid compatibility charts or consult your localrepresentative for advice.STRAINERTo prevent damage from dirt or foreign matterit is recommended that a Y or Basket type60 mesh strainer be installed as close aspossible to the inlet side of the meter.When a strainer is installed it should beregularly inspected and cleaned. Failure tokeep the strainer clean will dramatically effectflow meter performance.Contact your local representative for advice.AIR PURGE / LINE PRESSURETo prevent damage caused by air purge slowlyfill the meter with fluid.To reduce pressure build-up turn off theat the end of each day.REED SWITCHThe reed switch can cause inaccurate ratecounts when used with high speed counters.It is advised that a low speed counter is used oralternatively a denounce circuit be installed.OPERATING PRINCIPLEFluid passing through the meter causes the rotors toturn, as shown below.One of the rotors (the active rotor) is fitted withmagnets.The passing of the magnets are picked up by thesensing elements (Reed and Hall Effect sensors)located in the Pulser Circuit Board.The excitation of these switches provides a ‘RawPulse Output’ which relates to the K-Factor.(e.g. KF 2.58 2.58 pulses per litre of fluid passed)This Pulse Output Signal can either be fed directly toan external receiving element (e.g. Data Logger orPLC) or alternatively to an LC Display which conditions the Pulse input signal to display volume of fluidpassed. (e.g. Display 1 Litre per 2.58 pulses received)1) It is recommended that when setting up pipe workfor meter installations a bypass line be included inthe design. This provides the facility for a meter tobe removed for maintenance without interruptingproduction. (see figure above)2) Use thread sealant on all pipe threads.3) For pump applications ensure pipe work hasthe appropriate working pressure rating to matchthe pressure output of the pump. See MeterSpecifications section for further details.4) Install a wire mesh strainer, Y or basket type 40mesh (400 micron), as close as possible to theinlet side of the meter.5) Ensure that the meter is installed so that theflow of the liquid is in the direction ofthe arrows embossed on the meterbody.6) The meter can be installed in anyorientation as long as the metershafts are in a horizontal plane.(Refer to figures to the right forcorrect installation) The registerassembly may be orientated to suitthe individual.Note: Incorrect installation cancause premature wear of metercomponents.7) Do not over tighten meter connections. Note:Incorrect installation can cause premature wear ofmeter components.8) It is important that after initial installation youfill the line slowly, high speed air purge couldcause damage to the rotors.9) Test the system for leaks.10) Check the strainer for swarf or foreign material,after the first 200 litres check periodically,particularly if the flow rate decreases.Page 3 of 20

MAINTENANCE PROCEDUREDISASSEMBLYEnsure that the fluid supply to the meter is disconnected, and the line pressure is released before disassembly, with the exception for repair ormaintenance to the LC Display or PCB wherethere is no necessity to isolate the meter from flow.Refer to the exploded parts diagram on subsequentpages for item numbers.1) Pulse Caps Models: Undo the conduit connector,remove pulse cap and remove the wires from thepulse terminal board2) Standard LC Display: Mark the display orientationwith a marking pen, unscrew the four large screwson top of the LC Display. Carefully separate theLC Display from the plastic housing anddisconnect the wires from the pulse terminalblock. (Refer to additional LCD instruction manualaccompanying these instructions). Remove themounting adaptor plate and gasket.7) Insert the cap head screws and tighten in adiagonal sequence 1, 3, 2, 4, etc.Torque 33 Nm8) The replacement of cables and connectors area reversal of the disassembly procedure, replaceconduit fitting if required.When replacing the Standard LC Display confirmthe orientation marks made on disassembly arealigned then screw the register into place.9) Test the meter by turning the rotors with a fingeror by applying very low air pressure (no morethan a good breath) to one end of the meter,before returning the meter to the line.3) Loosen the cap head screws that hold down themeter cap remove the screws, washers and lift offthe cap.4) Remove the o-ring from the o-ring groove in themeter cap.5) Remove rotors.REASSEMBLY1) Before reassembling check the condition of therotors (replace if necessary).2) Check that the smooth side of the rotors (not theplug side) is facing you when inserting the rotors,the smooth side of the rotor is the magnet side.There is no difference between rotor one or rotortwo.3) Replace the rotors onto the shafts at 90 degreesto each other (refer Fig) and check theiroperation by turning either of the rotors.If the rotors are not in mesh correctly or donot move freely, remove one of the rotors andreplace correctly at 90 degrees to the other rotor.4) Re-check the operation of the rotors5) Replace the o-ring into groove in the meter cap, ifthe o-ring has grown or is damaged in anyway replace it with a new part.6) Replace the meter cap making sure that thelocating pin in the body lines up with the hole inthe meter cap.Page 4 of 20

FLOWMETER SPECIFICATIONSFlowmeterFlow RangeMetricUSBelow 5 cP60 to 600 LPM17 to 170 GPM5 to 1000 cP20 to 733 LPM5 to 194 GPMK-Factor(Sensor Pulses per Unit of Measure)2.58 pulses/L9.77 pulses/GMax Temperature(model MX75F and MX75S)-40 C - 120 C-40 F - 248 F(models MX75P)-40 C - 150 C-40 F - 302 F1200 kPa175 psi1Maximum Operating PressureAccuracy of Reading 0.5%1. Conforms to Directive 97/23/EC—Cat 1High Viscosity ApplicationsEnsure the Flowmeter is fitted with ‘High Viscosity Rotors’ is the fluid being metered is 1000 cP or aboveHigh Viscosity RotorsFor Fluids above 1000 Centipoise (cP)*Note: High Viscosity Rotor option available for models MX75SELECTRICAL SPECIFICATIONSThe MX Flow meter series is supplied with either a Blind Pulser and Digital Display option.Please note the wiring diagrams in the following pages are for the Blind Pulser Output Modules and the PCB(Sensor Board), which is responsible for providing a Raw Pulse input to the LC displayIf the Flow meter is supplied with an LC Display fitted, please consult the appropriate Instruction Manual, asadvised below, for all programming and wiring instructions.Output option:type ‘D’type ’E’type ‘F”type “G’type “H”Display Type :PRPRAERERAERBERS (remote mount only)Display Part Number:MXD-DSMXD-ESMXD-ESMXD-GSMXD-HSERS-RMP / ERS-RMAInstruction Sheet:DR013DR014MS574MS392MS476MS351Analogue Output (4-20mA)Analogue outputs are available as an auxiliary display signal by including either of the following LC displays withyour flowmeter. These may be fitted to the meter or remote (wall mount) types.PRA12mm LC Display with analogue output moduleERA17mm LC Display with analogue output modulePage 5 of 20

WIRING DIAGRAM 1Standard PulserOutput type ‘A’Pulser SpecificationsOutput SignalsReed Switch(Mechanical Sensor)Hall Effect IC(Electronic Sensor)Standard Pulse Meter2x Digital (Square Wave)CurrentMaximum500mAVoltageMaximum30V DCContact RatingMaximum 110WMaximum Current7.5mAOperating Voltage4.5V to 24V DCTransistor TypeOpen-Collector NPN1. Contact rating maximum is 10W. Neither current nor voltage maximums should be exceeded in achieving this.NPN Hall effectRed VEWhiteSignalBlack-VEReed switch N/OGreen VEYellow-VEPage 6 of 20

WIRING DIAGRAM 2PCBOutput types D,E,F,G,HReed SwitchTo maximise the life of the reed switch contacts, the pulse board comes equipped with a 1k8Ω current limiting resistor in serieswith the reed switch as standard.These resistors are user swappable should you require a different value for your system.NPN Open Collector Hall Effect SensorThe output for the hall effect sensor is NPN (current sinking, open collector). For correct operation, it is advisable to have a pull-up resistor installed.The hall effect sensor is equipped with a 1k8Ω pull-up resistor between signal and supply as standard.This in-built pull-up resistor can be bypassed by moving the jumper pin to the off position if required.A pull-up resistor of your choosing can be installed between signal and supply, provided the in-built pull-up resistor be bypassed first.Pulser SpecificationsOutput SignalsReed Switch(Mechanical Sensor)Hall Effect IC(Electronic Sensor)Standard Pulse Meter2x Digital (Square Wave)CurrentMaximum500mAVoltageMaximum30V DCContact RatingMaximum 110WMaximum Current7.5mAOperating Voltage4.5V to 24V DCTransistor TypeOpen-Collector NPN1. Contact rating maximum is 10W. Neither current nor voltage maximums should be exceeded in achieving this.Reed switch current limitReed 1Reed 1Reed 2OffOnPull-UpHall EffectHall effect built-in pull-up -Note:Local Display isconnected to Reed 1 VeSignalGndReed 2 -Page 7 of 20

WIRING DIAGRAM 3Intrinsically Safe (Ex ia)Output type ‘B’CAUTION: This sensor must be installed with an approved safety barrier.Pulser SpecificationsSENSOR TYPESPECIFICATIONSOmni PolarOpen-Collector NPNConstructionStainless Steel HousingOperating Voltage5V to 30V DCMaximum Current15mATemperature Range-40 - 85oC-40 - 185oFPage 8 of 20

WIRING DIAGRAM 4High TemperatureOutput type ‘T’Pulser SpecificationsSENSOR TYPEOMNI POLARConstructionSPECIFICATIONSNPNStainless Steel HousingOperating Voltage4.5 to 30V DCMaximum Current18mATemperature Range-40 - 150oC-40 - 302oFPage 9 of 20

TROUBLESHOOTING GUIDEProblemCauseRemedyFluid will not flowthrough metera) Foreign matter blocking rotorsb) Line strainer blockedc) Damaged rotorsd) Meter connections over tightenede) Fluid is too viscousa) Dismantle meter, clean rotors (strainer must be fitted inline)b) Clean strainerc) Replace rotors (Strainer must be fitted in line)d) Re-adjust connectionse) See specifications for maximum viscosityReduced flowthrough metera) Strainer is partially blockedb) Fluid is too viscousa) Clean strainerb) See specifications for maximum viscosityMeter readinginaccuratea) Fluid flow rate is too high or too lowb) Air in fluidc) Excess wear caused by incorrect installationa) See specifications for minimum and maximum flow ratesb) Bleed air from systemc) Check meter body and rotors. Replace as required. Referto installation instructionsMeter not giving apulse signala) Faulty hall effect sensorb) Faulty reed switchc) Magnets faileda) Replace PCB Boardb) Replace PCB Boardc) Replace magnetsLCD register notworkinga) Battery not connected properlyb) Battery flatc) Faulty wiring connectionsd) Faulty LC Displaye) Faulty connection from LC Displaya) Check battery connectionsb) Replace batteryc) Check wiring for loose or faulty connectionsd) Replace LC Displaye) Check wiring connectionsMAINTAINENCE VIDEOSMacnaught provides an comprehensive set of ‘Maintenance Videos’ to assist the end user in all aspects of serviceand/or repair of the Flowmeter range.This web based resource can be accessed via the following URLhttp://www.macnaught.com.au/resources/Or by scanning the QR code below.Page 10 of 20

EXPLODED DIAGRAMParts IdentificationItem No.Part Description1Meter Body2Flanged Process Connection3Threaded Process Connection4Adaptor Bolts5Adaptor O-Rings6Meter Cap 0-Ring78Rotor Set910Printed Circuit Board11Meter Cap Screws12Pulser Cap Gasket13Pulser Cap14Pulser Cap ScrewsMeter CapPCB Mounting ScrewsPage 11 of 20

SPARE PARTS KITSSpare Kit options, for both Flowmeter and Display/Pulser modules, are available as replacement components. Pulser Kit / LC Display Module- Replacement PCB complete with M-Lock electronic housing.- LC Display module (Electronic housing not included) Rotor Kit- Rotor assembly (includes Meter Cap bolts and O-Ring) Seal Kit- O-Rings/Gaskets (includes Meter Cap Bolts)SPARE KITS - FLOWMETERROTOR KITStandardMX75FMXS75F-rotorHigh orMXS75P-HVrotorMXS75P-HTrotorHigh TempMXS75F-sealSEAL KITMX75PMXS75S-sealMXS75P-sealSPARE KITS – DISPLAY AND PULSER MODULEOutputTypeDescriptionType AStandard PulserMXD-ASType BIntrinsically SafeMXD-BSType CFlameproofMXD-CSType DPR Digital RegisterMXS-PCB-PRMXS-DIS-PRMXD-DSType EPRA Digital RegisterMXS-PCB-PRMXS-DIS-PRAMXD-ESType FER Digital RegisterMXS-PCB-ERMXS-DIS-ERMXD-FSType GERA Digital RegisterMXS-PCB-ERMXS-DIS-ERAMXD-GSType HERB Batch ControllerMXS-PCB-ERMXS-DIS-ERBMXD-HSType THigh TemperaturePulser KitDisplay ModuleonlyDisplay/PulsercompleteMXD-TSPage 12 of 20

WETTED PARTSWETTED PARTSMX75FMX75SMX75PMETER BODYAlumAlumSt.StMETER CAPAlumAlumSt.StROTORS - StandardAlumAlumSt.StHigh ViscosityROTOR SHAFTSAlumSt.StROTOR BUSHESO-RINGSFKMSt.StSt.StCACAKKK - FEP/PTFE EncapsulatedSt.St - Stainless Steel 316 /304Alum - Aluminium AA610CA - CarbonFKM - Viton Page 13 of 20

PRESSURE DROP v’s VISCOSITY100%50%50%100%10%25%5%Page 14 of 20

METER DIMENSIONSPage 15 of 20

AIR ELIMINATOR / STRAINER COMBINATION3” Flange3” Threaded ConnectionPage 16 of 20

NOTESPage 17 of 20

NOTESWEEE Directive - Waste Electrical and Electronic EquipmentThe WEEE Directive requires the recycling of waste electrical and electronic equipment in the European Union.Whilst the WEEE Directive does not apply to some of Macnaught’s products, we support its policy and ask you to be aware of how to dispose of this product.The crossed out wheelie bin symbol illustrated and found on our products signifies thatthis product should not be disposed of in general waste or landfill.Please contact your local dealer national distributor or Macnaught Technical Servicesfor information on product disposal.Page 18 of 20

EC Declaration of ConformityEC Declaration of ConformityIn accordance with EN ISO 17050-2004We:Of:Macnaught Pty Ltd41-47 Henderson StTurrella NSW 2205AUSTRALIADeclare that:Macnaught Flow Meters prefixed MX, F, CR, M or S in accordance with the following Directive;2006/42/EC Machinery Directive (and its amending directives)have been designed and manufactured to the following specifications;EN ISO 12100:2010 Safety of MachineryDeclare that:Macnaught Flow Meters prefixed MX, F, CR, M or S with flange nominal bores sizes 1” to 6” inclusive in accordance wwith the following Directive;97/23/EC Pressure Equipment Directive (and its amending directives)comply with the essential requirements of the Directive, classification Category 1 Group 1Declare that:Macnaught Flow Meter accessories prefixed DR, ER or PR as fitted to the Flow Meters or remotely mounted in accordance with the following Directive2004/108/EC Electromagnetic Compatibility Directive (and its amending directives)have been designed and manufactured to the following specifications;EN61326-1:2006 Electromagnetic Compatibility – Electrical equipment for measurement, control and laboratory use.I hereby declare that the equipment named above has been designed to comply with the relevant sections of the abovereferenced specifications.The product complies with all essential requirements of the Directives.This declaration is no longer valid if the unit is modified without our agreement.Name:Position:Date:Done at:Steven GavinOperations Director21/06/2013Macnaught Pty Ltd41-49 Henderson StTurrella NSW 2205,AUSTRALIAIssue 6QA-CN5573Issued by: Graham WilsonPage 19 of 20

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If the Flow meter is supplied with an LC Display fitted, please consult the appropriate Instruction Manual, as advised below, for all programming and wiring instructions. High Viscosity Applications Ensure the Flowmeter is fitted with ‘High Viscosi

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