Juki LU2-4400_4420-BOB Bruksanvisning

Juki Symaskin LU2-4400_4420-BOB

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A181E09 P017

LOCKSTITCH COMPOUND FEED

INDUSTRIAL SEWING MACHINES

MODEL

INSTRUCTION MANUAL

LU2-4400-B0B

(Single-Needle)

LU2-4420-B0B (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

USAGE PRECAUTION ……………………………………………… 1

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

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

3Lubricationcondition………………………………………………………………… 2

4Adjustmentoflubricationtotherotatinghook ………………………………… 2

5Installationofthebeltcover ……………………………………………………… 2

6Precautiononoperation …………………………………………………………… 2

HOW TO USE ……………………………………………… 3

1Installationofneedles ……………………………………………………………… 3

2Windingofthebobbinthread……………………………………………………… 3

3Selectionofthethread……………………………………………………………… 4

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

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

6Settingofbobbins …………………………………………………………………… 5

7Threadingofbobbinthreads ……………………………………………………… 6

8Adjustmentofbobbinthreadstension…………………………………………… 6

9Balanceofthreadstension ………………………………………………………… 6

:Adjustmentofneedlethreadstension …………………………………………… 6

AAdjustmentofthepresserfootpressure………………………………………… 6

BTimingbetweentherotatinghookmotionandtheneedlemotion…………… 7

CAdjustmentofthefeeddogheight………………………………………………… 8

D

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

… 9

ERelationshipbetweentherotatinghookmotionandtheopenermotion …… 9

FRelationshipbetweentheneedlemotionandthefeeddogmotion…………… 10

GSafetyclutch …………………………………………………………………………11

HAdjustmentofupperfeedlength(needleside) ………………………………… 12

IAdjustmentofforward/backwardfeedlength ………………………………… 12

JAdjustmentoftheoutsidepresserfootandtheinsidepresserfoot ………… 12

SPECIFICATIONS ……………………………………………… 14

Produktspecifikationer

Varumärke:	Juki
Kategori:	Symaskin
Modell:	LU2-4400_4420-BOB

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