Mitsubishi Electric LU2-4410-B1T-CS Bedienungsanleitung

A180E271P03

INSTRUCTION MANUAL

LOCKSTITCH COMPOUND-FEED AUTOMATIC UNDERTRIMMER

INDUSTRIAL SEWING MACHINES

LU2-4410-B1T-CS (Single-Needle)

LU2-4430-B1T (Double-Needle)

MODEL

PRECAUTION BEFORE STARTING OPERATION

1 Safety Precautions

1 . Whenturningthepoweron,keepyourhandsandngersawayfromtheareaaround/

undertheneedleandtheareaaroundthepulley.

2 . Thepowermustbeturnedo󱐯whenthemachineisnotused,orwhentheoperator

leaveshis/herseat.

3 . Thepowermustbeturnedo󱐯beforetiltingthemachinehead,installingorremoving

the“V”belt,adjustingthemachine,orreplacingparts.

4 . Avoidplacingngers,hairs,obstacles,etc.nearthepulley,“V”belt,bobbinwinder

wheel,ormotorwhenthemachineisinoperation.Injurycouldresult.

5 . Don’tputngersintothethreadtake-uplevercover,around/undertheneedle,or

pulleywhenthemachineisinoperation.

6 . Ifthebeltcover,thengerguard,and/ortheeyeguardareinstalled,don’toperate

themachinewithoutthesesafetydevices.

2 Precaution before Starting Operation

1 . Ifthemachine’soilpanhasanoilsump,neveroperatethemachinewithoutllingoil

init.

2 . Ifthemachineislubricatedbyadropoiler,neveroperatethemachinewithout

lubricating.

3 . Whenanewsewingmachineisoperated,verifytherotationaldirectionofthepulley

withthepoweron.

 (Thepulleyshouldrotatecounterclockwisewhenviewedfromthepulley.)

4 . Verifyvoltageand(singleorthree)phaseindicatedonthenameplateofthemotor.

3 Precaution for Operating Conditions

1 . Avoidusingthemachineatabnormallyhightemperature(35℃orhigher)orlow

temperature(5℃orlower).Otherwise,machinefailuremayresult.

2 . Avoidusingthemachineindustyconditions.

3 . Avoidusingthemachineinconditionslledwithalotofelectricnoisessuchashigh-

frequencywelders.

INTRODUCTION

　ThankyouverymuchforpurchasingMitsubishiindustrialsewingmachine.

　Pleasereadthisinstructionmanualbeforeoperatingthesewingmachine.Pleasereadalso

“SafetyManual”,“InstructionmanualforMitsubishiLimiservoX”andoperatethesewing

machinecorrectlyandsafely.

CONTENTS

PREPARATION FOR OPERATION ……………………………………………… 1

1Adjustmentoftheneedlestoppingposition……………………………………… 1

USAGE PRECAUTION ……………………………………………… 2

1Lubrication(1)………………………………………………………………………… 2

2Lubrication(2)………………………………………………………………………… 2

3Lubricationcondition………………………………………………………………… 3

4Adjustmentoflubricationtotherotatinghook ………………………………… 3

5Precautionforthebuilt-intypedetector ………………………………………… 3

6Installationofthebeltcover ……………………………………………………… 3

7Precautiononoperation …………………………………………………………… 3

HOW TO USE ……………………………………………… 4

1Installationofneedles ……………………………………………………………… 4

2Windingofthebobbinthread……………………………………………………… 4

3Selectionofthethread……………………………………………………………… 5

4Threadingofneedlethreads ……………………………………………………… 5

5Adjustmentoffeed(stitch)lengthandbackstitch……………………………… 6

6Settingofbobbins …………………………………………………………………… 6

7Threadingofbobbinthreads ……………………………………………………… 7

8Adjustmentofbobbinthreadstension…………………………………………… 7

9Balanceofthreadstension ………………………………………………………… 7

:Adjustmentofneedlethreadstension …………………………………………… 7

AAdjustmentofthepresserfootpressure………………………………………… 7

BTimingbetweentherotatinghookmotionandtheneedlemotion…………… 8

CAdjustmentofthefeeddogheight ……………………………………………… 9

D

Relationshipbetweentherotatinghookmotionandthethreadtake-uplevermotion

… 10

ERelationshipbetweentherotatinghookmotionandtheopenermotion …… 10

FRelationshipbetweentheneedlemotionandthefeeddogmotion…………… 11

GSafetyclutch ………………………………………………………………………… 12

HAdjustmentofupperfeedlength(needleside) ………………………………… 13

IAdjustmentofforward/backwardfeedlength ………………………………… 13

JAdjustmentoftheoutsidepresserfootandtheinsidepresserfoot ………… 13

KInstallationofthemovableknife…………………………………………………… 15

LInstallationpositionofthethreadtrimmercam………………………………… 16

MAdjustmentofthethreadtrimmercam ………………………………………… 16

NAdjustmentofthethreadtensionreleasing……………………………………… 17

O

Adjustmentofmeshingpressurebetweenthemovableknifeandthexedknife

…… 18

PSharpeningofthexedknife ……………………………………………………… 18

Q

Adjustmentofthethreadtrimmerwithchangingthewidthbetweenneedles

…19

RInstallationofthesolenoidarm …………………………………………………… 20

SRemovalprocedureofthehook…………………………………………………… 20

SPECIFICATIONS ……………………………………………… 21

PREPARATION FOR OPERATION

1 Adjustment of the needle stopping position

1 . Adjustment of “UP” position

Whenthepedaliskickeddownbyheel,themachinestopsat“UP”position.

Ifmarksdeviatelargerthan3mm,adjustasfollows.

( 1 )Disconnecttheplug(12pins)ofcablefromthemachinehead.

( 2 )Runthemachineandstopat“UP”position.

( 3 )Whileholdingthepulley,insertthe“Adjustingtool”inthehole Ⓐ,thenturnthetool.

2 . Adjustment of “Down” position

Whenthepedalis“Neutral”themachinestopsat“Down”position.

Ifmarksdeviatelargethan5mm,adjustasfollows.

( 1 )Disconnecttheplug(12pins)ofcablefromthemachinehead.

( 2 )Runthemachineandstopat“Down”position.

( 3 )Whileholdingthepulley,insertthe“Adjustingtool”inthehole Ⓑ,thenturnthetool.

3 . Conrmthestopoperation,thensettheplug(12pins)comingfromthemachineheadintothe

receptacle.

Timingmark

Whitemark Upposition

DownpositionBlackmark

Adjustingtool

UP上

later

earlier

DOWN下 Timingoftheneedle

Ⓐ

Ⓑ

—1 —

1 Lubrication (1)

Filltheoilreservoirwithoilupto“H”mark.

Oillevelshouldbeperiodicallychecked.Ifoillevel

isfoundbelow“L”levelreplenishoilto“H”level.

Foroil,use“MC70M”speciedbyMitsubishi.

※Refer

MC70M：Specicgravity(15℃ )=0.86(g/cm3)

：Viscosity(40℃ )=10.9(mm2/s)

2 Lubrication (2)

Whenanewsewingmachineisusedforthe

rsttime,orsewingmachineleftoutofusefor

considerablylongtimeisusedagain,replenisha

suitableamountofoiltotheportionsindicatedby

arrowsinthebelowgure.

USAGE PRECAUTION

Oillevelmark

—2 —

USAGE PRECAUTION

3 Lubrication condition

Seedrippingofoilthroughtheoilsightwindowto

checkoilingconditionduringoperation.

Conrmthatoilhasbeendrainedfromtheoil

tankwhentheoperationisstopped.

Whendust,etc.accumulateintheoiltank,remove

therubberplugtoclean.

4 Adjustment of lubrication to the

rotating hook

5 Precaution for the built-in type detector

1 . Sincetheopticaltypedetectingelementisusedinthedetector,preventdustoroilfromstickingto

thedetectingplatewhenthesewingmachinepulleyisremovedforadjustment.

Iftheyhavestuck,wipethemo󱐯withsoftclothcarefullysothatthesurfaceisnotscratched,do

notletoilpermeatetheclearanceonthedetectingplate.

2 . Incaseofdisconnectionofthepositiondetectorconnector,runningo󱐯thebeltorcomplete

constraintandoverload,themotorisautomaticallyturnedo󱐯afterpredeterminedtimetoprevent

burningofthemotor.(However,incaseofhalf-constraintandoverload,thepowermaynotbe

turnedo󱐯.)Afterthefailureiseliminated,thenormaloperationisresumedbyturningo󱐯thepower

oncethenturningonagain.

Thesameoperationoccursforthedetectormalfunctionorthelinebreakage.

6 Installation of the belt cover

1 . Installthebeltcoveronthemachinesideforsafety.Refertotheprovidedinstructiondocument

containedinthesamepackage.

2 . Installthebeltcoveronthemotorsideforsafety.

7 Precaution on operation

( 1 ) Whenthepoweristurnedonoro󱐯,keepfootawayfromthepedal.

( 2 ) Itshouldbenotedthatthebrakemaynotworkwhenthepowerisinterruptedorpowerfailure

occursduringsewingmachineoperation.

( 3 ) Sincedustinthecontrolboxmightcausemalfunctionorcontroltroubles,besuretokeepthe

controlboxcovercloseduringoperation.

( 4 ) Donotapplyamultimetertothecontrolcircuitforchecking,otherwisevoltageofmultimeter

mightdamagesemiconductorcomponentsinthecircuit.

Oilsight

window

Rubberplug

Adjusting

screw

Decrease Increase

Nut

—3 —

HOW TO USE

1 Installation of needles

Note: Before installing the needles, be sure to turn o󱐯 the power.

2 Winding of the bobbin thread

Note: When bobbin thread is wound, keep the presser foot lifted.

　Adjustment ●Tension of wound thread Slackwindingisrecommendedforpolyesterthreadand

nylonthread.

●Conically wound thread Movethethreadguidetowardsmallerdiameterofwound

threadlayer.

●Amount of wound thread Loosenthewindingamountadjustmentscrewtodecrease

threadwindingamountandtightenthescrewtoincrease

threadwindingamount.

Windingtension

adjustmentnut

Evenwinding

amountof80%

offullcapacity

Windingamount

adjustmentscrew

Threadguide

Double-Needle

Inserttheneedleuptothebottomofneedle

clampandtightenthescrewkeepingthe

longgroovesideofneedlefacetoface

Insuﬃcientinsertion

Gap

Longgroovesareopposite

Longgroove

leftside

Needledistorted

Single-needle

—4 —

HOW TO USE

3 Selection of the thread

Itisrecommendedtouse“S”twistthreadintheleftneedle(viewed

fromfront),and“Z”twistthreadintherightneedle.

Whendiscriminateuseofneedlethreadsisimpossible,use“Z”twist

threadinboththeneedles.

Forbobbinthread,“S”twistthreadaswellas“Z”twistthreadcanbe

used.

4 Threading of needle threads

1 . Passeachneedlethreadthroughthreadguide(A).

Note:Whenthinslipperythread(polyesterthreadorlament

thread,etc.)isused,

Passthethreadthroughthreadguide(B)aswell.

2 . Withthethreadtake-upleverlocatedattheuppermostposition,

passeachneedlethreadintheordershowninthefollowinggure.

Note:Pushingtheneedlethreadtensionreleasingbuttonshown

inthegurebelowopensthesauceroftheneedlethreadtension

adjuster,andtheneedlethreadcaneasilypulledout.

LU2-4410

LU2-4430

, , (Detail) to , to (Detail)

L12 L14 R10 R12

(Seedetailedﬁgure)

Leadthethreadleftward.

(Seedetailedﬁgure)

Leadthethreadrightward Leadthethreadrightward

Threadtension

releasingbutton

12 13

12 13 14

7 6

R1L1

R5R6

L8 L7

Threadtension

releasingbutton

Stwistthread

Ztwistthread

A B A AB

—5 —

HOW TO USE

5 Adjustment of feed (stitch)

length and backstitch

●Adjustmentoffeed(stitch)length…Adjustfeed

lengthbyturningthefeedlengthsettingdial

whilepushingPUSHlever.

●Backstitch…Directionofstitchingcanbe

reversedbydepressingthereversesewing

leverorpushingthetouchbackswitch.

●Touchbackswitch…Inthecasethattheswitch

isturnedtothearrowdirectionby180°,no

backwardstitchingoccursevenwhenthe

switchispushed.

Usethisfunctiontoavoidthemalfunctionsuch

asunnecessaryreversestitchinginthecase

thatthefabriccomesincontactwiththeswitch

duringsewing.

6 Setting of bobbins

( 1 ) Pullout5cmthreadtailfrombobbins.

( 2 ) Putbobbinsintohooksinthedirectionasthe

followinggure.

Touchback

switch

Feedlengthsettingdial

Reversesewinglever

Bedslide

Hook

Bedslide

Thread

Hook

—6 —

7 Threading of bobbin threads

( 1 ) Putbobbinthreadintotheslit①,passunder

thelug②andextenditabovethebed.

( 2 ) Whileholdingtwoneedlethreadswithyour

lefthand,turnthepulleyonerotationwith

yourrighthand.Thebobbinthreadswill

comeupwhenneedlethreadsareliftedup

asshowninthegure.Needlethreadsand

bobbinthreadsshouldbealignedandled

backwardtogether.

Adjustment of bobbin threads tension

9 Balance of threads tension

Adjustment of needle threads tension

●Needlethreadstensionshouldbeadjustedon

thebasisofbobbinthreadstension.

●Adjustneedlethreadstensionbyturning

threadtensionnuts.

 Needlethreadstensioncanbealsoadjustedby

changingintensityandmovablerangeofthe

threadtake-upspringincaseofsewingthe

specialfabricandthread.

Adjustment of the presser foot pressure

Adjustthepresserfootpressureaccordingtothe

fabricbyturningthepressureadjustingscrew.

HOW TO USE

A○

B×

C×

Balancedtension

Tighttheneedlethreadtensionor

loosethebobbinthreadtension

Loosetheneedlethreadtensionor

tightthebobbinthreadtension

Threadtensionnut

Tighten

Loosen

Thread

①

②

Thread

Opener

Loosen Tighten

Threadtensionscrew

Pressureadjusting

screw

Strengthen Weaken

—7 —

Dieses Handbuch passt für folgende Modelle

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