Juki LU2-4652-B1T Bruksanvisning

Juki Symaskin LU2-4652-B1T

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A181E P01101

SINGLE-NEEDLE LOCKSTITCH COMPOUND-FEED

AUTOMATIC UNDERTRIMMER

INDUSTRIAL SEWING MACHINE

MODEL

LU2-4652-B1T

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Installingtheaircylinderassembly ……………………………………………… 1

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

3Adjustmentofthestitchlengthbeforetrimming ……………………………… 3

4Operationspeedadjustmentofinstantalternatingaircylinder ……………… 4

5Heightadjustmentoftheautomaticpresserfootlifter………………………… 4

6Adjustmentoftheneedlestoppingposition……………………………………… 5

USAGE PRECAUTION ……………………………………………… 6

1Lubrication( 1 )  ……………………………………………………………………… 6

2Lubrication( 2 )  ……………………………………………………………………… 6

3Lubricationcondition………………………………………………………………… 7

4Adjustmentoflubricationtotherotatinghook ………………………………… 7

5Precautionforthebuilt-intypedetector ………………………………………… 7

6Installationofthebeltcover ……………………………………………………… 7

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

HOW TO USE ……………………………………………… 8

1Installationoftheneedle …………………………………………………………… 8

2Windingofthebobbinthread……………………………………………………… 8

3Selectionofthethread……………………………………………………………… 9

4Threadingoftheneedlethread…………………………………………………… 9

5Adjustmentoffeed(stitch)lengthandbackstitch……………………………… 10

6Settingofthebobbin………………………………………………………………… 10

7Adjustmentoftheneedlethreadguide ………………………………………… 10

8Threadingofthebobbinthread…………………………………………………… 11

9Adjustmentofthebobbinthreadtension………………………………………… 11

:Balanceofthreadstension ………………………………………………………… 11

AAdjustmentoftheneedlethreadtension………………………………………… 11

BAdjustmentofthepresserfootpressure………………………………………… 11

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

DInstantalternatingswitch ………………………………………………………… 13

EThestopperscrewforadjustingthemaximumalternatingstroke ………… 13

FInstallingthefeedregulatorbracket……………………………………………… 14

GAdjustmentofthealternatingstrokesensingpotentiometer ………………… 14

HTimingbetweentherotatinghookmotionandtheneedlemotion…………… 15

IAdjustmentofthefeeddogheight………………………………………………… 16

J

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

… 17

KRelationshipbetweentherotatinghookmotionandtheopenermotion …… 17

LRelationshipbetweentheneedlemotionandthefeeddogmotion…………… 18

MSafetyclutch ………………………………………………………………………… 19

NAdjustmentofupperfeedlength(needleside) ………………………………… 20

OAdjustmentofforward/backwardfeedlength …………………………………20

PInstallationofthemovableknife…………………………………………………… 21

QInstallationpositionofthethreadtrimmercam………………………………… 22

RAdjustmentofthethreadtrimmercam ………………………………………… 22

SAdjustmentofthethreadtensionreleasing……………………………………… 23

T

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

… 24

USharpeningofthexedknife ……………………………………………………… 24

SPECIFICATIONS ……………………………………………… 25

Produktspecifikationer

Varumärke:	Juki
Kategori:	Symaskin
Modell:	LU2-4652-B1T

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