Juki LU2-4710_4730-B1T Handleiding

Juki Naaimachine LU2-4710_4730-B1T

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A181E P01103

LOCKSTITCH COMPOUND-FEED

AUTOMATIC UNDERTRIMMER

INDUSTRIAL SEWING MACHINES

MODEL

INSTRUCTION MANUAL

LU2-4710-B1T

(Single-Needle)

LU2-4730-B1T (Double-Needle)

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 industrial sewing machine.

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

“Safety Manual”, “Instruction manual for LIMISERVO” and operate the sewing machine

correctly and safely.

CONTENTS

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

1Connectingtheelectriccablestothecontrolbox ……………………………… 1

2Settinguptheactivatingspeedoftheaircylinder……………………………… 2

3Adjustmentoftheneedlestoppingposition……………………………………… 2

USAGE PRECAUTION ……………………………………………… 3

1Lubrication(1)………………………………………………………………………… 3

2Lubrication(2)………………………………………………………………………… 3

3Lubricationcondition………………………………………………………………… 4

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

5Precautionforthebuilt-intypedetector ………………………………………… 4

6Installationofthebeltcover ……………………………………………………… 4

7Precautiononoperation …………………………………………………………… 4

HOW TO USE ……………………………………………… 5

1Installationofneedles ……………………………………………………………… 5

2Windingofthebobbinthread……………………………………………………… 5

3Selectionofthethread……………………………………………………………… 6

4Threadingofneedlethreads ……………………………………………………… 6

5Adjustmentoffeed(stitch)lengthandbackstitch……………………………… 7

6Settingofbobbins …………………………………………………………………… 7

7Adjustmentoftheneedlethreadguide ………………………………………… 7

8Threadingofbobbinthreads ……………………………………………………… 8

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

:Balanceofthreadstension ………………………………………………………… 8

AAdjustmentofneedlethreadstension …………………………………………… 8

BAdjustmentofthepresserfootpressure………………………………………… 8

CAdjustmentofthethreadtakeupspring………………………………………… 9

DAdjustmentoftheoutsidepresserfootandinsidepresserfoot ……………… 9

EInstantalternatingswitch ………………………………………………………… 11

FThestopperscrewforadjustingthemaximumalternatingstroke ………… 11

GInstallingthefeedregulatorbracket……………………………………………… 12

HAdjustmentofthealternatingstrokesensingpotentiometer ………………… 12

ITimingbetweentherotatinghookmotionandtheneedlemotion…………… 13

JAdjustmentofthefeeddogheight ……………………………………………… 14

K

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

… 15

LRelationshipbetweentherotatinghookmotionandtheopenermotion …… 15

MRelationshipbetweentheneedlemotionandthefeeddogmotion…………… 16

NSafetyclutch …………………………………………………………………………17

OAdjustmentofupperfeedlength(needleside) ………………………………… 18

PAdjustmentofforward/backwardfeedlength ………………………………… 18

QInstallationofthemovableknife…………………………………………………… 19

RInstallationpositionofthethreadtrimmercam………………………………… 20

SAdjustmentofthethreadtrimmercam ………………………………………… 20

TAdjustmentofthethreadtensionreleasing……………………………………… 21

U

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

… 22

VSharpeningofthexedknife ……………………………………………………… 22

W

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

… 23

SPECIFICATIONS ……………………………………………… 24

Product specificaties

Merk:	Juki
Categorie:	Naaimachine
Model:	LU2-4710_4730-B1T

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