JUKI MF-7900 Series User Manual

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5. Besuretoturnthepoweroffandchecktobesurethatthemachineandmotorcompletelystopbeforere-
movingthebeltcoverandV-beltinordertopreventaccidentcausedbyabruptstartofthemachineormotor.
 6. Ifaservomotorisusedwiththemachine,themotordoesnotproducenoisewhilethemachineisatrest.
Besurenottoforgettoturnthepoweroffinordertopreventaccidentcausedbyabruptstartofthemotor.
 7. Neverusethemachinewiththecoolingopeningofthemotorpowerboxshieldedinordertopreventre
accidentbyoverheat.
Lubrication
 1. BesuretouseJUKIgenuineoilandJUKIgenuinegreasetothepartstobelubricated.
 2. Iftheoiladheresonyoureyeorbody,besuretoimmediatelywashitoffinordertopreventinamma-
tionorirritation.
 3. Iftheoilisswallowedunintentionally,besuretoimmediatelyconsultamedicaldoctorinordertopre-
ventdiarrheaorvomiting.
Maintenance
 1. Inpreventionofaccidentcausedbyunfamiliaritywiththemachine,repairandadjustmenthastobe
carriedoutbyaservicetechnicianwhoisthoroughlyfamiliarwiththemachinewithinthescopedened
intheinstructionmanual.BesuretouseJUKIgenuinepartswhenreplacinganyofthemachineparts.
JUKIassumesnoresponsibilityforanyaccidentcausedbyimproperrepairoradjustmentortheuseof
anypartotherthanJUKIgenuineone.
 2. Inpreventionofaccidentcausedbyunfamiliaritywiththemachineorelectrical-shockaccident,besure
toaskanelectricaltechnicianofyourcompanyorJUKIordistributorinyourareaforrepairandmainte-
nance(includingwiring)ofelectricalcomponents.
 3. Whencarryingoutrepairormaintenanceofthemachinewhichusesair-drivenpartssuchasanaircyl-
inder,besuretoremovetheairsupplypipetoexpelairremaininginthemachinebeforehand,inorderto
preventaccidentcausedbyabruptstartoftheair-drivenparts.
 4. Besuretocheckthatscrewsandnutsarefreefromloosenessaftercompletionofrepair,adjustment
andpartreplacement.
 5. Besuretoperiodicallycleanupthemachineduringitsdurationofuse.Besuretoturnthe
poweroff
andverifythatthemachineandmotorstopcompletelybeforecleaningthemachineinordertoprevent
accidentcausedbyabruptstartofthemachineormotor.
 6. Besuretoturnthepoweroffandverifythatthemachineandmotorstopcompletelybeforecarryingout
maintenance,inspectionorrepairofthemachine.(Forthemachinewithaclutchmotor,themotorwill
keeprunningforawhilebyinertiaevenafterturningthepoweroff.So,becareful.)
 7. Ifthemachinecannotbenormallyoperatedafterrepairoradjustment,immediatelystopoperationand
contactJUKIorthedistributorinyourareaforrepairinordertopreventaccidentthatcanresultinper-
sonalinjuryordeath.
 8. Ifthefusehasblown,besuretoturnthepoweroffandeliminatethecauseofblowingofthefuseand
replacetheblownfusewithanewoneinordertopreventaccidentthatcanresultinpersonalinjuryor
death.
 9. Besuretoperiodicallycleanuptheairventofthefanandinspecttheareaaroundthewiringinorderto
preventreaccidentofthemotor.
Operatingenvironment
 1. Besuretousethemachineundertheenvironmentwhichisnotaffectedbystrongnoisesource(electro-
magneticwaves)suchasahigh-frequencywelderinordertopreventaccidentcausedbymalfunctionof
themachine.
 2. Neveroperatethemachineinanyplacewherethevoltageuctuatesbymorethan"ratedvoltage±10%"
inordertopreventaccidentcausedbymalfunctionofthemachine.
 3. Besuretoverifythattheair-drivendevicesuchasanaircylinderoperatesatthespeciedairpressure
beforeusingitinordertopreventaccidentcausedbymalfunctionofthemachine.
 4. Tousethemachinewithsafety,besuretouseitundertheenvironmentwhichsatisesthefollowing
conditions:
  Ambienttemperatureduringoperation 5°Cto35°C
  Relativehumidityduringoperation 35%to85%
 5. Dewcondensationcanoccurifbringingthemachinesuddenlyfromacoldenvironmenttoawarmone.
So,besuretoturnthepoweronafterhavingwaitedforasufcientperiodoftimeuntilthereisnosign
ofwaterdropletinordertopreventaccidentcausedbybreakageormalfunctionoftheelectricalcompo-
nents.
 6. Besuretostopoperationwhenlightningashesforthesakeofsafetyandremovethe
powerplugin
ordertopreventaccidentcausedbybreakageormalfunctionoftheelectricalcomponents.
 7. Dependingontheradiowavesignalcondition,themachinemaygeneratenoiseintheTVorradio.Ifthis
occurs,usetheTVorradiowithkeptwellawayfromthemachine.
 8. Inordertoensuretheworkenvironment,locallawsandregulationsinthecountrywherethesewing
machineisinstalledshallbefollowed.
Inthecasethenoisecontrolisnecessary,anearprotectororotherprotectivegearshouldbewornac-
cordingtotheapplicablelawsandregulations.
 9. Disposalofproductsandpackagesandtreatmentofusedlubricatingoilshouldbecarriedoutproperly
accordingtotherelevantlawsofthecountryinwhichthesewingmachineisused.
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1. Neverbring yourngersunder theneedlewhen thepowerswitchisturnedONor
the machine is in operation.
2. Neverbringyourfingers, hair or clothes close tothepulleyandneedleor place
anything on the pulley and under the needle while the machine is in operation.
3. Neveroperate the machine with the safetydevices such as belt cover,needle bar
threadtake-upcover,ngerguard,eyeguardcover,etc.removed.
4.
Be sure to turn OFF the power and perform the work after ascertaining that the sewing
machinedoesnotrunevenwhenthestartingpedalisdepressedincaseofchecking,
adjusting, cleaning, threading or replacing the needle of the sewing machine.
5. Neveroperate thesewing machinewiththe groundwire forthepower supply
removedsoastoensuresafety.
6. BesuretoturnOFFthepowerswitchinadvanceincaseofinserting/removingthe
power plug.
7. In time of thunder and lightning, stop your work and disconnect the power plug from
the receptacle so as to ensure safety.
8. Whenyou move the sewing machine from a coldplacedirectlytoa warm place,
dew condensation may result. Turn ON the power to the machine after you have
conrmedthatthereisnofearofdewcondensation.
9. In case of maintenance, inspection, or repair, be sure to turn OFF the power switch
andconrmthatthesewingmachineandthemotorhavecompletelystoppedbefore
starting the work. (In case of the clutch motor, it continues rotating for a while by the
inertiaevenafterturningOFFthepowerswitch.So,becareful.)
10. Be careful of handling this product so as not to pour water or oil, shock by dropping,
and the like since this product is a precision instrument.
11. Topreventpersonalinjuries,keepyourhandsandngersawayfromthetopbelt
while the sewing machine is in operation.
1. To
preventaccidents caused by electric shock, never openthemotor control box
coverortouchthecomponentsinsidethecontrolboxwhilethepowerswitchisON.
CAUTION BEFORE OPERATION
• BesuretolltheoilholewithoildesignatedbyJUKIbeforeuse.
• Cleanthesewingmachinethoroughlybeforeusingitforthersttime.
• Removealldustcollectedonthesewingmachineduringthetransportation.
• Conrmthatthevoltageandphasearecorrect.
• Conrmthatthepowerplugisproperlyconnected.
• Neverusethesewingmachineinthestatewherethevoltagetypeisdifferentfromthedesignatedone.
• Thedirectionofrotationofthesewingmachineisclockwiseasobservedfromthepulleyside.Becareful
nottorotateitinreversedirection.
•
When operating the sewing machine, turn ON the power switch after properly setting the head on the table.
• JUKIrecommendsthatusersdecreasethesewingspeedtothenumberofrevolutionsequaltoorlowerto
thedefaultspeedatshipmentforonemonthaftertherstmachineusebytheuser.
• Operate the pulley after the sewing machine has totally stopped.
WARNING :
Toavoidmalfunctionanddamageofthemachine,conrmthefollowing.
PrecautionstobetakensoastousetheMF−7900,7900DSeries more safely
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ENGLISH
DECLARATION OF INCORPORATION OF PARTLY COMPLETED MACHINERY
We hereby declare that the sewing machine (sewing head) described below ;
1. Must not be put into service until the machinery to which it is incorporated has been declared in
conformity with provisions of the Machinery Directive 2006/42/EC,and
2. Conforms to the essential requirements of the Machinery Directive 2006/42/EC, described in the
technical documentation,and
3. To be prepared with above technical documentation compiled in accordance with part B of Annex
VII,and
4. Also to conform to the RoHS Directive 2011/65/EU
5. Relevant information on which should be transmitted in response to a reasoned request by the
national authorities,by the electronic method or other according to the request.
Applied harmonized standards, in particular :
EN ISO12100, EN ISO10821, EN 50581
Manufacturer :
JUKI CORPORATION
2-11-1, Tsurumaki, Tama-shi, Tokyo, Japan
Model
Description Industrial Sewing Machine
Function make stitches and sew
MF-7900 Series
Please do not hesitate to contact our distributors or agents in your area for further information when necessary.
＊
Thedescriptioncoveredinthis"FORTHEUSEOFMACHINE"issubjecttochangefor
improvementofthecommoditywithoutnotice.
Copyright © 2018 JUKI CORPORATION
• All rights reserved throughout the world.
18 · 03 Printed in China
2-11-1, TSURUMAKI, TAMA-SHI,
TOKYO, 206-8551, JAPAN
PHONE : (81)42-357-2371
FAX : (81)42-357-2274
http://www.juki.com
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JUKI MF-7900 Series Specifications

General

Brand	JUKI
Model	MF-7900 Series
Category	Sewing Machine
Language	English