Mitsubishi Electric LS2-1130 User manual

A180E277P03
INSTRUCTION MANUAL
HIGH-SPEED SINGLE-NEEDLE LOCKSTITCH
INDUSTRIAL SEWING MACHINE
LS2-1130
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
USAGE PRECAUTION ……………………………………………… 1
1Lubrication(1)………………………………………………………………………… 1
2Lubrication(2)………………………………………………………………………… 1
3Lubricationcondition………………………………………………………………… 1
4Adjustmentoflubricationtotherotatinghook ………………………………… 1
5Adjustmentoftheoilpump………………………………………………………… 1
6Periodicalcleaning…………………………………………………………………… 2
7Installationofthebeltcover ……………………………………………………… 2
8Precautiononoperation …………………………………………………………… 2
HOW TO USE ……………………………………………… 3
1Installationoftheneedle …………………………………………………………… 3
2Windingofthebobbinthread……………………………………………………… 3
3Threadingoftheneedlethread…………………………………………………… 4
4Adjustmentoffeed(stitch)lengthandbackstitch……………………………… 4
5Balanceofthreadstension ………………………………………………………… 4
6Adjustmentoftheneedlethreadtension………………………………………… 5
7Adjustmentofthebobbinthreadtension………………………………………… 5
8Adjustmentofthepresserfootpressure………………………………………… 5
9Adjustmentofthetimingtoopentensiondiscoftheneedlethreadtension
regulator……………………………………………………………………………… 5
SPECIFICATIONS ……………………………………………… 6

1Lubrication (1)
Filltheoilreservoirwithoilupto“H”line.
Oillevelshouldbeperiodicallychecked.Ifoillevel
isfoundbelow“L”linereplenishoilto“H”line.
Foroil,use“MC70M”speciedbyMitsubishi.
※Refer
 MC70M：Specicgravity(15℃ )=0.86(g/cm3)
  ：Viscosity(40℃ )=10.9(mm2/s)
Kneelifterpin
Drainoilscrew
Ⓗ Ⓛ
2Lubrication (2)
Whenanewsewingmachineisusedforthe
rsttime,orsewingmachineleftoutofusefor
considerablylongtimeisusedagain,removethe
rubberplugandreplenishasuitableamountofoil
asshowninthegure.
Rubberplug
3Lubrication condition
Checkthattheoilsplashedtheoilsightwindow.
Oilsightwindow
4Adjustment of lubrication to the
rotating hook
Adjustthelubricationamountoftherotatinghook
byturningthescrew Ⓐ.
ScrewⒶ
Decrease Increase
5Adjustment of the oil pump
Fortheregularsewing,itisnotnecessaryfor
theadjustmentoftheoilpump,butincaseoflow
speedoperation,iftheoilsplashamountforthe
oilsightwindowonthemachinearmisreduced,
closetheoilbypassholeoftheoilpump.
Adjustingplate
Bypasshole
Standardgap
0.5to1.0
USAGE PRECAUTION
—1 —

6Periodical cleaning
1 . Machine
2 . Motor
Removedustfromthemotorltereveryoneortwomonths.(Continuedoperationwiththelter
cloggedwithlintordustmayoverheatthemotor.)
3 . Control Box
Removedustfromtheconnector.(Iftheconnectoriscoveredwithdust,themachinemight
malfunction.)
7Installation 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.
8Precaution 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.
USAGE PRECAUTION
Hook
Feeddog
Hook
Feedbar
Oilpumpscreen
●Removethethroatplateand
cleanthefeeddog.Reassembly
shouldbedonebyscrewingin
thescrew2-3rotationsbyhand
atrst,thentighteningthem
evenlyusingalong-shafted
screwdriver.
●Leanthemachineheadand
cleanthehookandremove
anydustand/orlintinsidethe
bobbincase.
●Leanthemachineheadand
removeanydustand/orlinton
theoilpumpscreen.
—2 —

1Installation of the needle
Note: Before installing the needles, be sure to turn o󱐯 the power.
HOW TO USE
Inserttheneedleuptothebottomof
needleclampandtightenthescrew
keepingthelonggroovesidefacing
totheleft.
Insufficientinsertion Needledistorted
Gap
Longgroove
leftside Timingmark
forDB×1
Timingmark
forDP×17
Needlebar
Note：Ifthreadsnappingoccursduringreversesewingwith
polyesterthreads,itmaybeavoidedbyttingtheneedle
withthelonggrooveshiftedtothefrontside.Normally,
avoidttingtheneedlewiththegroovefacingbackward.
BothneedlesDP × 17and
DB × 1canbeused.
Usethetimingmarksas
showninthegure.
2Winding 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
—3 —

3Threading of the needle thread
Withthethreadtake-upleverlocatedattheuppermostposition,passtheneedlethreadintheorder
showninthefollowinggure.
HOW TO USE
①
②
③
④
⑤
⑥
⑦
⑧
⑨
⑩
⑪
Reversesewing
lever
Feedlength
settingdial
①
②
or
⑧
⑥
Thread
⑤
④
③
4Adjustment of feed (stitch)
length and backstitch
●Adjustmentoffeed(stitch)length…Adjustfeed
lengthbyturningthefeedlengthsettingdial
whiledepressingthereversesewinglever.
●Backstitch…Directionofstitchingcanbe
reversedbydepressingthereversesewing
lever.
5Balance of threads tension
A○
Balancedtension
C×
Loosetheneedlethreadtensionor
tightthebobbinthreadtension
B×
Tighttheneedlethreadtensionor
loosethebobbinthreadtension
—4 —

6Adjustment of the needle
thread tension
●Theneedlethreadtensionshouldbeadjusted
onthebasisofthebobbinthreadtension.
●Adjusttheneedlethreadtensionbyturningthe
threadtensionnut.
 Theneedlethread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.
7Adjustment of the bobbin
thread tension
●Thebobbinthreadtensioncanbeadjustedby
turningthescrewⒶ.
8Adjustment of the presser foot
pressure
●Adjustthepresserfootpressureaccordingto
thefabricbyturningthepressureadjusting
screw.
●Sewingpressureshouldbeadjustedtothe
minimumrequiredstrength.
9Adjustment of the timing to
open tension disc of the needle
thread tension regulator
Adjusttimingwiththefollowingprocedureas
timingtoopenthetensiondisccanbeadjusted
fortheclearance(withinthelimitsof2to7mm)
ofthepresserfoot.
( 1 ) Removetherubberplugandloosenthescrew
Ⓐ.
( 2 ) Movethethreadtensionreleasingcamtothe
rightortheleft.
 Positionedtotheright…quick
 Positionedtotheleft…slow
( 3 ) TightenthescrewⒶafteropeningcondition
ofthethreadtensiondischasbeenchecked.
●Itisconvenienttooperatebyttingthesame
thicknessofplateastheclearanceofthe
presserfootyouintendtoloosenbeneaththe
presserfoot.
HOW TO USE
Threadtensionnut
Loosen
Tighten
ScrewⒶ
Threadtensionspring
Loosen
Tighten
Pressureadjustingscrew
Strengthen
Weaken
Screwdriver
Threadtensionreleasingcam
Pin
Rubberplug
ScrewⒶ
Presserbarlifter
Presserfoot
Upperthreadtensionregulator
Left Right
—5 —

SPECIFICATIONS
LS2-1130 Specications
Model
Specications LS2-1130-M0B LS2-1130-H0B LS2-1130-B0B
Application Medium-heavy Heavy Heavy
Max.sewingspeed(rpm) 4500 3500
Stitchlength(mm) 0to5 0to7
Needlebarstroke(mm) 30.5 35.0
Threadtake-upleverstroke(mm) 61.3 72.0
Feeddogheight(mm) 0.8 1.0 1.2
Presserfootstroke(mm)
Hand 6
Knee 13
Needle DB×1#14 DB×1#22
Hook(verticalrotatinghook) Standard Standardforheavy Large
Lubricationsystem Automaticlubrication
Beddimensions(mm) 475×178
Note:●Thebobbinshouldbeofhighqualityfreefromdeformation.
 ●Somematerialsand/orsewingconditionsmayrequirespecicationsotherthanthoselisted
above.
 ●Thesespecicationsaresubjecttochangeformachineimprovement.
—6 —