Shini STM Series User manual

STM Series
Oil Heater
Date:Nov. 2014
Version: Ver.B(English)

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Contents
1. General Description..................................................................................9
1.1 CodingPrinciple.................................................................................10
1.2 Feature...............................................................................................10
1.3 TechnicalSpecifications.....................................................................12
1.3.1 Specification............................................................................12
1.3.2 PumpPerformance..................................................................13
1.3.3 ReferenceFormulaofMouldControllersModelSelection.......13
1.4 SafetyRegulations.............................................................................14
1.4.1 SafetySignsand Labels..........................................................14
1.4.2 Signsand Labels.....................................................................15
1.4.3 OperationRegulations.............................................................16
1.4.4 Transportation andStorageoftheMachine.............................17
1.5 ExemptionClause..............................................................................19
2. StructureCharacteristics and WorkingPrinciple.................................20
2.1 WorkingPrinciple...............................................................................20
2.2 AssemblyDrawing.............................................................................21
2.2.1 AssemblyDrawing(STM-607/910)..........................................21
2.2.2 PartsList (STM-607~STM-1220).............................................22
2.2.3 AssemblyDrawing(STM-1220)...............................................24
2.2.4 PartsList (STM-1220)..............................................................25
2.2.5 AssemblyDrawing(STM-2440)...............................................27
2.2.6 PartsList (STM-2440)..............................................................28
2.2.7 AssemblyDrawing(STM-3650)...............................................30
2.2.8 PartsList (STM-3650)..............................................................31
2.2.9 Pump.......................................................................................33
2.3 ElectricalDiagram..............................................................................34
2.3.1 MainCircuit (STM-607/910-D)(400V)......................................34
2.3.2 ControlCircuit (STM-607/910-D) (400V).................................35
2.3.3 ElectricalComponentsLayout (STM-607/910-D) (400V).........37
2.3.4 Thermocoupleand TerminalLayout (STM-607/910-D) (400V)38
2.3.5 ElectricalComponentsList (STM-607/910-D) (400V)..............39

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2.3.6 MainCircuit (STM-607~1220)(400V)......................................41
2.3.7 ControlCircuit (STM-607~1220)(400V)...................................42
2.3.8 ElectricalComponentsLayout (STM-607~1220)(400V).........43
2.3.9 ElectricalComponentsList (STM-607~1220)(400V)..............44
2.3.10MainCircuit (STM-2440)(400V)..............................................47
2.3.11ControlCircuit (STM-2440)(400V)..........................................48
2.3.12ElectricalComponentsLayout (STM-2440)(400V).................49
2.3.13ElectricalComponentsList (STM-2440)(400V)......................50
2.3.14MainCircuit (STM-3650)(400V)..............................................51
2.3.15ControlCircuit (STM-3650)(400V)..........................................52
2.3.16ElectricalComponentsLayout (STM-3650)(400V).................53
2.3.17ElectricalComponentsList (STM-3650)(400V)......................54
2.3.18MainCircuit (STM-607/910-D)(230V)......................................55
2.3.19ControlCircuit (STM-607/910-D) (230V).................................56
2.3.20ElectricalComponentsLayout (STM-607/910-D) (230V).........58
2.3.21Thermocoupleand TerminalLayout (STM-607/910-D) (230V)59
2.3.22ElectricalComponentsList (STM-607/910-D) (230V)..............60
2.3.23MainCircuit (STM-607~1220)(230V)......................................62
2.3.24ControlCircuit (STM-607~1220)(230V)...................................63
2.3.25ElectricalComponentsLayout (STM-607~1220)(230V).........64
2.3.26ElectricalComponentsList (STM-607~1220)(230V)..............65
2.3.27MainCircuit (STM-2440)(230V)..............................................68
2.3.28ControlCircuit (STM-2440)(230V)..........................................69
2.3.29ElectricalComponentsLayout (STM-2440)(230V).................70
2.3.30ElectricalComponentsList (STM-2440)(230V)......................71
2.3.31MainCircuit (STM-3650)(230V)..............................................72
2.3.32ControlCircuit (STM-3650)(230V)..........................................73
2.3.33ElectricalComponentsLayout (STM-3650)(230V).................74
2.3.34ElectricalComponentsList (STM-3650)(230V)......................75
2.4 MainElectricalComponentsDescription............................................76
2.4.1 Overload Relay........................................................................76
2.5 OperationProcedures........................................................................77
2.5.1 Installation stepsforoptionswatermanifold(dewaxing)..........77
2.5.2 Installation stepsforoptionswatermanifold(welding).............77

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3. Installation and Debugging.....................................................................79
3.1 Installation Space...............................................................................79
3.2 Mouldand WaterCoupling.................................................................80
3.3 PowerSupply.....................................................................................81
4. Operation Guide......................................................................................82
4.1 ControlPanel.....................................................................................82
4.2 Menu Introduction..............................................................................85
4.3 Machine Startup.................................................................................85
4.4 ParameterReferenceTable...............................................................94
4.5 Stop theMachine...............................................................................95
5. Trouble-shooting.....................................................................................97
6. Maintenance and Repair.........................................................................99
6.1 OpentheCovers..............................................................................100
6.2 YType Strainer................................................................................100
6.3 SolenoidValve.................................................................................101
6.4 Pipe Heater......................................................................................101
6.5 CoolingPipes...................................................................................102
6.6 Printed Circuit Board........................................................................103
6.7 DisplayerTerminalConnectingDiagram..........................................106
6.8 MaintenanceSchedule.....................................................................107
6.8.1 About theMachine.................................................................107
6.8.2 Installation &Inspection.........................................................107
6.8.3 DailyChecking.......................................................................107
6.8.4 WeeklyChecking...................................................................107
6.8.5 TrimonthlyChecking..............................................................107
6.8.6 Half-yearlyChecking..............................................................107
6.8.7 YearlyChecking.....................................................................108
6.8.8 3yearChecking.....................................................................108
TableIndex
Table1-1 Specification...................................................................................12
Table2-1 PartsList (STM-607/STM-607-D)..................................................22

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Table2-2 PartsList (STM-1220)....................................................................25
Table2-3 PartsList (STM-2440)....................................................................28
Table2-4 PartsList (STM-3650)....................................................................31
Table2-4 PumpPartsList..............................................................................33
Table2-5 ElectricalComponentsList (STM-607-D) (400V)...........................39
Table2-6 ElectricalComponentsList (STM-910-D) (400V)...........................40
Table2-7 ElectricalComponentsList (STM-607)(400V)...............................44
Table2-8 ElectricalComponentsList (STM-910)(400V)...............................45
Table2-9 ElectricalComponentsList (STM-1220)(400V).............................46
Table2-10 ElectricalComponentsList (STM-2440)(400V)...........................50
Table2-11 ElectricalComponentsList (STM-3650)(400V)...........................54
Table2-12 ElectricalComponentsList (STM-607-D) (230V).........................60
Table2-13 ElectricalComponentsList (STM-910-D) (230V).........................61
Table2-14 ElectricalComponentsList (STM-607)(230V).............................65
Table2-15 ElectricalComponentsList (STM-910)(230V).............................66
Table2-16 ElectricalComponentsList (STM-1220)(230V)...........................67
Table2-17 ElectricalComponentsList (STM-2440)(230V)...........................71
Table2-18 ElectricalComponentsList (STM-3650)(230V)...........................75
PictureIndex
Picture1-1 PumpPerformance......................................................................13
Picture2-1 WorkingPrinciple.........................................................................20
Picture2-2 AssemblyDrawing(STM-607/910)..............................................21
Picture2-3 AssemblyDrawing(STM-1220)...................................................24
Picture2-4 AssemblyDrawing(STM-2440)...................................................27
Picture2-5 AssemblyDrawing(STM-3650)...................................................30
Picture2-6 Pump...........................................................................................33
Picture2-7 MainCircuit (STM-607/910-D) (400V).........................................34
Picture2-8 ControlCircuit 1(STM-607/910-D) (400V)...................................35
Picture2-9 ControlCircuit 2(STM-607/910-D) (400V)...................................36
Picture2-10 ElectricalComponentsLayout (STM-607/910-D) (400V)...........37
Picture2-11 ThermocoupleandTerminalLayout (STM-607/910-D)(400V)..38
Picture2-12 MainCircuit (STM-607~1220)(400V).........................................41

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Picture2-13 ControlCircuit (STM-607~1220)(400V)....................................42
Picture2-14 ElectricalComponentsLayout (STM-607~1220)(400V)...........43
Picture2-15 MainCircuit (STM-2440)(400V)................................................47
Picture2-16 ControlCircuit (STM-2440)(400V)............................................48
Picture2-17 ElectricalComponentsLayout (STM-2440)(400V)...................49
Picture2-18 MainCircuit (STM-3650)(400V)................................................51
Picture2-19 ControlCircuit (STM-3650)(400V)............................................52
Picture2-20 ElectricalComponentsLayout (STM-3650)(400V)...................53
Picture2-21 MainCircuit (STM-607/910-D) (230V).......................................55
Picture2-22 ControlCircuit 1(STM-607/910-D) (230V).................................56
Picture2-23 ControlCircuit 2(STM-607/910-D) (230V).................................57
Picture2-24 ElectricalComponentsLayout (STM-607/910-D) (230V)...........58
Picture2-25 ThermocoupleandTerminalLayout (STM-607/910-D)(230V)..59
Picture2-26 MainCircuit (STM-607~1220)(230V).........................................62
Picture2-27 ControlCircuit (STM-607~1220)(230V)....................................63
Picture2-28 ElectricalComponentsLayout (STM-607~1220)(230V)...........64
Picture2-29 MainCircuit (STM-2440)(230V)................................................68
Picture2-30 ControlCircuit (STM-2440)(230V)............................................69
Picture2-31 ElectricalComponentsLayout (STM-2440)(230V)...................70
Picture2-32 MainCircuit (STM-3650)(230V)................................................72
Picture2-33 ControlCircuit (STM-3650)(230V)............................................73
Picture2-34 ElectricalComponentsLayout (STM-3650)(230V)...................74
Picture2-35 OverloadRelay..........................................................................76
Picture3-1 InstallationSpace........................................................................79
Picture3-2 MouldandWaterCoupling1.......................................................80
Picture3-3 MouldandWaterCoupling2.......................................................80
Picture3-4 MouldandWaterCoupling3.......................................................81
Picture4-1 ControlPanel...............................................................................82
Pictute4-2 MenuOutline................................................................................85
Picture4-3: MainPowerSwitch........................................................................86
Picture4-4: InitialMenu....................................................................................86
Picture4-5: ControlSetting...............................................................................87
Picture4-6: AlarmSetting.................................................................................88
Picture4-7: Output Setting...............................................................................89

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Picture4-8:TemperatureSetting......................................................................90
Picture4-9:TimeSetting..................................................................................91
Picture4-10: Communication Setting...............................................................92
Picture4-11:Equipment Setting.......................................................................93
Picture4-12: OperationScreen........................................................................94
Picture6-1 Openthe Covers1.....................................................................100
Picture6-2 Openthe Covers2.....................................................................100
Picture6-3 Openthe Covers3.....................................................................100
Picture6-4 Y Type Strainer..........................................................................101
Picture6-5 SolenoidValve...........................................................................101
Picture6-6 Pipe Heater1.............................................................................102
Picture6-7 Pipe Heater2.............................................................................102
Picture6-8 Pipe Heater3.............................................................................102
Picture6-9 CoolingPipes1..........................................................................103
Picture6-10 CoolingPipes2........................................................................103

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1. General Description
Read thismanualcarefullybeforeoperationtopreventdamageofthe
machine orpersonalinjuries.
TheSTMseriesstandardoil heaterareusedtoheatupthemouldand maintain
thistemperature, althoughtheycanbe usedinothersimilarapplications. High
temperatureoil fromthemouldisreturned tothe coolingtankand cooled by
indirect cooling. It isthen pressurised bythe high-pressurepump, sent tothe
heatingtankandfinallytothe mouldwithaconstant temperature.Withour
optimised design, oil can reachamaximumof200and the HANYOUNG
temperaturecontrollercan maintainanaccuracyof 1.
Model: STM-910Model:STM-910-D

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1.1CodingPrinciple
Notes*
D=Dual-heatingZonesHT=HighTemperatureModel
CE=CE ConformityM=MagnepicPumpB=Buzzer
1.2Feature
1)Standardconfiguration
●Controlleradopts3.2" LCD foreasyoperation.
●Equippedwiththe designof7-dayautomaticstart/stop timer. LCD screen
can beconverted between ChineseandEnglish.Theunitoftemperature
can beconverted between oFand .
●P.I.Dmulti-stagetemperaturecontrolsystemcan maintainmould
temperaturewithaccuracyof 0.5 .
●Adoptshighefficiencyhightemperaturepump,whichcanmeetthedemands
oftemperaturecontrolforprecisemouldsandmouldloop withminor
diametertoachieveprecisetemperaturecontroland highefficientheat
exchange.
●Multiplesafetydevicesincludingpowerreversephaseprotection, pump
overload protection, overheatprotectionandlowlevelprotection thatcan
automaticallydetectabnormalperformanceand indicatethisviavisible
alarm.
●Pipe heateraremade of stainless steel.
●ForstandardSTM, the heatingtemperaturecanreach200 ,whilefor
STM-HT,it canreach300 .

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●STM-HTisequippedwithmagneticpumpand itsinternalstructureismade
ofhighpressureresistancestainless steeltoprevent anyexplosion.
●AdoptedEthernet communicationfunctiontorealizecentralmonitoring
online.
2)Accessoryoption
●Watermanifolds,Teflon hoseandTransferoil areoptional.
●AmongtheStandardOil MouldControllersSTM,all modelscan optfor
magneticpump.(except STM-3650 series). Displayofmouldtemperature
and mouldreturnwatertemperatureisoptional.
All serviceworkshouldbe carried out byaperson withtechnicaltrainingor
correspondingprofessionalexperience.The manualcontainsinstructionsforboth
handlingand servicing.Chapter6, whichcontainsserviceinstructionsintendedfor
serviceengineers. Otherchapterscontaininstructionsforthedailyoperator.
Anymodificationsofthemachinemustbe approved bySHINI inordertoavoid
personalinjuryand damagetomachine.Weshall not beliableforanydamage
causedbyunauthorized changeof themachine.
Ourcompanyprovidesexcellent after-salesservice. Shouldyou haveanyproblem
duringusingthemachine,pleasecontactthecompanyorthelocalvendor.
HeadquarterandTaipeifactory
Tel:[phone]
ShiniPlastics Technologies(Dongguan), Inc
Tel:[phone]
ShiniPlastics TechnologiesIndiaPvt.Ltd.
Tel:[phone]

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1.3Technical Specifications
1.3.1Specification
Table1-1 Specification
Model Max.
Temp.
Pipe
Heater
(kW)
Pump Power
(kW)
(50 / 60Hz)
Max.pump
Flow
(L / min)
(50 / 60Hz)
Max.pump
Pressure
(bar)
(50 / 60Hz)
Heating
Tank
Number
Main/ Sub.
OilTank (L)
Cooling
Method
Mould
Coupling*
(inch)
Inlet/Outlet
(inch)
Dimensions
(mm)
(H×W×D)
Weight
(kg)
STM-607 6 0.55 / 0.65 27 / 30 3.8 / 5 1 6 / 3.2 3/8"(2×2) 3/4 / 3/4 635x280x740 65
STM-607-D 6×2
0.55×2 /
0.65×2 27×2 / 30×2
3.8 / 5 2 6×2 / 3.2×2 3/8"(4×2) 3/4 / 3/4 655x560x740 130
STM-910 9 0.75 / 0.92 42 / 50 5.0 / 6.4 1 6 / 3.2 3/8"(2×2) 3/4 / 3/4 635x280x740 70
STM-910-D 9×2
0.75×2 /
0.95×2 42×2 / 50×2
5.0 / 6.4 2 6×2 / 3.2×2 3/8"(4×2) 3/4 / 3/4 655x560x740 140
STM-1220 12 1.5 / 1.9 74 / 84 6.2 / 7.2 1 6.8 / 11.8 3/8"(4×2) 1 / 1 795x340x845 100
STM-2440 24 2.8 / 3.4 130 / 130 8.0 / 10.2 2 11 / 16 1"(1×2) 1 / 1 900x390x935 145
STM-3650
200℃
36 4.0 / 4.0 170 / 170 8.0 / 8.0 3 14 / 16
Indirect
11/4"(1×2) 11/4/ 11/4900x385x980 155
Note: 1)"D"standsfor dual-heatingzones.We reservetheright tochange
2) Pumptesting standard: Power of 50 / 60Hz,specificationswithoutprior notice.
purified water at20℃. (Thereis 10%tolerance
for eithermax. flowrateor max. pressure).
3) "*"Standsfor options.
4) Power supply: 3Φ, 230/ 400 / 460 / 575VAC, 50 / 60Hz.

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1.3.2PumpPerformance
Flowrate
(L/min)
Pressure
(bar)
0
1
10 20 30 40 50 60 70 80 90 100
2
3
4
5
6
7
8
9
10
1
1
STM-1220
STM-910
STM-607
STM-3650
STM-2440
Picture1-1 PumpPerformance
1.3.3ReferenceFormulaofMouldControllersModelSelection
HeaterPower(kW)=mouldweight (kg) ×mouldspecificheat (kcal/kg) ×
temperaturedifferencebetween mouldandenvironment() ×safetycoefficient
/ heatingduration / 860
Note: safetycoefficientcan selectavalue from1.3to1.5.
FlowRate(L/min)=heaterpower(kw) ×860 / [heatingmediumspecific
(kcal/kg) ×heatingmediumdensity(kg/L)×in/outlettemperaturedifference
()×time(60)]
Note:Waterspecificheat =1kcal/kg
Heatingmediumoil specificheat =0.49kcal/kg
Waterdensity=1kg/L
Heatingmediumoil density=0.842kg/L

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1.4SafetyRegulations
Strictlyabide bythe followingsafetyregulationstoprevent damageofthe
machine orpersonalinjuries.
1.4.1SafetySignsand Labels
Danger!
Theunit isdesigned toendurehightemp,andhighpressure. Forsafe
operation,do notremovethe coversorswitches.
Attention!
Theunit shouldbe operated byqualifiedpersonnelonly.
Duringoperation, avoidwearingglovesorclothesthatmaycause
danger.
Turnoff mainswitchwhen powersupplyisoff.
Stoptheunitwhentheremaybepowersupplyproblemscausedbystatic
electricity.
Put onsafetyglovesand shoesduringinstallation orrelocation.
Componentsfromourcompanycan onlybe used forreplacement.
Warning!
Donottouchthe switchwithwet object orhands.
Donotusethemachinebeforefullyawareofitsperformance.
Becarefulnot totouchorhit the switchorsensor.
Pleasekeepenoughoperationspace,andkeep awayobstacles.
Toavoidproducingstatics, cleanthefloorfromoil orwatertokeep adry
environment.
Protectthemachineagainst severevibration orcollision.
Donotremovesafetysignsormakeit dirty.
Drunken,medicine-taking, ormen withoutproperjudgement shouldnot
operatethe machine.

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Warning！
Hightemperature, takecareof hands! Thislabelisattached on the
surfaceofheatingparts.
1.4.2Signsand Labels
Clean the filterscreen ofYtype strainer
timelytoavoidobstruction whichmay
affectmachineperformance.
It isusedforoil heater.Max. temperature
settingofthisunit is200 .
Thisistoindicatemotorrotating
direction.
When phasereversalhappens, thealarm
soundsandindicatoroncontrolpanelwill
indicate. Pleaseexchangetheplaceof
twooftheelectricalwirestosolvethis
problem.
Highvoltage! Electricalshock may
happen.
Carefulnessisrequired fromthe
operator.
Attentions!
Thisisgeneralwarningswhichoperators
shouldpayattentionto.
Oil outletvalve: oil dischargeoutletfor
renewingoil.
Highliquidlevel: the highest oil levelto
whichmachinecanreachunderroom
temperature.

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Frommould: connectorforcirculating
water/oil comingfrommould.
Pumppressuremeter:indicatingactual
pressureofsystem.
Tomold: connectorforcirculatingwater/
oil togotomould.
Oil inlet: oil fillerformachine.
1.Tomaintaintemperatureconsistency,
coolingwaterpressuremustbehigher
than2baratall time,but shouldnever
exceed 5barinanycase.
2. CleanY-shape CoolingWaterStrainer
periodicallytoensureperfect cooling
capacity.
Wateroutlet: drainageoutlet.
Waterinlet: inletforreplenishingwater
and coolingwater.
1.4.3OperationRegulations
1)Beforeoperation,makesurethat coolingwateriscleansoft waterwithout
pollutants.

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※Lowqualitywaterbringslimescales, whichmaycauseproblems.
2)Ifproblemsof drainageorbadtemperaturecontrolarenoted,pleaseclean
solenoidvalveand coolingwaterinlet and outlet.
3)Donotmovetheunit when it isinoperation.
4)Wheninneed ofrepairing, wait until oil temperaturefallsbelow30℃.
5)Motoroverload maybe causedbyphaseshortage,pipe obstruction,broken
bearing, etc. Motoroverload relaywilltripofftostopthemachine when this
happens.Fixingthe problems, pressRESETon overloadrelaytoclearthe
alarm.
6)Beforeturnoff thepump, wait until oil temperaturefallsblow50℃.Orthelife
oftheunit wouldbeaffected.
1.4.4Transportation andStorageoftheMachine
Transportation
1)STMseriesstandardoil heaterarepacked incratesorplywood caseswith
wooden pallet at thebottom, suitableforquickpositioningbyforklift.
2)Afterunpacked, castorsequipped on the machinecan be usedforeaseof
movement.
3)Donot rotatethemachineandavoidcollision withotherobjectsduring
transportationtoprevent improperfunctioning.
4)The structureofthe machine iswell-balanced,althoughit shouldalsobe
handled withcarewhenliftingthemachineforfearoffallingdown.
5)The machine anditsattachedpartscanbekeptat atemperaturefrom-25℃
to+55℃forlongdistancetransportationandforashort distance, itcan be
transported withtemperatureunder+70℃.
Storage
1)STMseriesstandardoil heatershouldbestored indoorswithtemperature
keptfrom5OCto40OCand humiditybelow80%.
2)Disconnect all powersupplyand turnoffmainswitchand controlswitch.
3)Keepthe wholemachine,especiallythe electricalcomponentsawayfrom
watertoavoidpotentialtroublescaused bythe water.
4)Plasticfilm shouldbeusedtoprotect the machinefromdust and rains.

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Workingenvironment
Themachineshouldbeoperated:
1)Indoorsinadryenvironment withmax. temperature+45℃and humidityno
morethan80%.
Donotusethemachine:
1)Ifit iswithadamaged cord.
2)Onawet floororwhen it isexposed toraintoavoidelectricalshock.
3)Ifithasbeendropped ordamaged until it ischeckedorfixed byaqualified
serviceman.
4)Thisequipmentworks normallyintheenvironmentwithaltitudewithin3000m.
5)At least aclearanceof1msurroundingthe equipment isrequired during
operation.Keepthisequipment awayfromflammablesourcesat least two
meters.
6)Avoidvibration, magneticdisturbanceat theoperationarea.
Rejectedpartsdisposal
When the equipmenthasrun out itslifetimeand can notbe usedanymore,
unplugthepowersupplyand disposeof it properlyaccordingtolocalcode.
FireHazard
Incaseoffire, Co2drypowderfireextinguishershouldbeapplied.
Pleaseabidebythesafetyguide whenyou operatethe machinesoasto
prevent damageofthemachine andpersonalinjuries.
All electricalcomponentsshouldbe installedbyqualified electricians.
Turnoff mainswitchand controlswitchduring repair and maintenance.
Warning! Highvoltage!
Thismarkisattachedon the coverof thecontrolbox.
Warning! Becareful!
Be morecarefulwhen thismarkappears.

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Warning!
Hightemperature, takecareof hands! Thislabelisattached on the
surfaceofheatingparts.
1.5 Exemption Clause
Thefollowingstatementsclarifytheresponsibilitiesandregulationsbornbyany
buyeroruserwho purchasesproductsandaccessoriesfromShini(including
employeesandagents).
Shiniisexempted fromliabilityforanycosts,fees,claimsandlossescausedby
reasonsbelow:
1. Anycarelessorman-madeinstallations,operation andmaintenancesupon
machineswithoutreferringtothe Manualpriortomachineusing.
2. Anyincidentsbeyondhumanreasonablecontrols, whichincludeman-made
viciousordeliberatedamagesorabnormalpower,and machine faultscaused
byirresistiblenaturaldisastersincludingfire,flood,stormand earthquake.
3. Anyoperationalactionsthatarenotauthorized byShiniuponmachine,
includingaddingorreplacingaccessories, dismantling,deliveringorrepairing.
4. Employingconsumablesoroil mediathatarenotappointed byShini.

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2. Structure Characteristics andWorkingPrinciple
2.1WorkingPrinciple
Solenoid valve
Levelswitch
Liquid-level
window
Heater
Cooler
Tomould
Ballvalve(oil)
Ball valve(oil)
Ball valve
Ball valve
Frommould
Coolingwateroutlet
Filter
Cooling waterinlet
Oil outlet
Mould
EGO
Bypass
Oiltank
Pump
Pressure
meter
Thermal
sensor
Picture2-1 WorkingPrinciple
Thehightemperatureoil returnstothe machine and thenbepressured by
pumptotheheater. Afterbeingheated,oil willbe forced tothe mouldand
continue the circle.Inthe process, iftheoil temperatureistoohigh,systemwill
activatethesolenoidvalvetolet coolingwatercooldownhightemperatureoil
indirectlyuntil thetemperatureisdowntothe systemrequirement. Ifthe
temperaturekeepsincreasingandreachestothe set pointofEGO, the system
will sound alarmandstop operation.The systemwill havelowlevelalarmand
stop workingifoil levelfallsdownbelowthe set point.