iv
5. Besuretoturnthepoweroffandchecktobesurethatthemachineandmotorcompletelystopbeforere-
movingthebeltcoverandV-beltinordertopreventaccidentcausedbyabruptstartofthemachineormotor.
6. Ifaservomotorisusedwiththemachine,themotordoesnotproducenoisewhilethemachineisatrest.
Besurenottoforgettoturnthepoweroffinordertopreventaccidentcausedbyabruptstartofthemotor.
7. Neverusethemachinewiththecoolingopeningofthemotorpowerboxshieldedinordertopreventre
accidentbyoverheat.
Lubrication
1. BesuretouseJUKIgenuineoilandJUKIgenuinegreasetothepartstobelubricated.
2. Iftheoiladheresonyoureyeorbody,besuretoimmediatelywashitoffinordertopreventinamma-
tionorirritation.
3. Iftheoilisswallowedunintentionally,besuretoimmediatelyconsultamedicaldoctorinordertopre-
ventdiarrheaorvomiting.
Maintenance
1. Inpreventionofaccidentcausedbyunfamiliaritywiththemachine,repairandadjustmenthastobe
carriedoutbyaservicetechnicianwhoisthoroughlyfamiliarwiththemachinewithinthescopedened
intheinstructionmanual.BesuretouseJUKIgenuinepartswhenreplacinganyofthemachineparts.
JUKIassumesnoresponsibilityforanyaccidentcausedbyimproperrepairoradjustmentortheuseof
anypartotherthanJUKIgenuineone.
2. Inpreventionofaccidentcausedbyunfamiliaritywiththemachineorelectrical-shockaccident,besure
toaskanelectricaltechnicianofyourcompanyorJUKIordistributorinyourareaforrepairandmainte-
nance(includingwiring)ofelectricalcomponents.
3. Whencarryingoutrepairormaintenanceofthemachinewhichusesair-drivenpartssuchasanaircyl-
inder,besuretoremovetheairsupplypipetoexpelairremaininginthemachinebeforehand,inorderto
preventaccidentcausedbyabruptstartoftheair-drivenparts.
4. Besuretocheckthatscrewsandnutsarefreefromloosenessaftercompletionofrepair,adjustment
andpartreplacement.
5. Besuretoperiodicallycleanupthemachineduringitsdurationofuse.Besuretoturnthe
poweroff
andverifythatthemachineandmotorstopcompletelybeforecleaningthemachineinordertoprevent
accidentcausedbyabruptstartofthemachineormotor.
6. Besuretoturnthepoweroffandverifythatthemachineandmotorstopcompletelybeforecarryingout
maintenance,inspectionorrepairofthemachine.(Forthemachinewithaclutchmotor,themotorwill
keeprunningforawhilebyinertiaevenafterturningthepoweroff.So,becareful.)
7. Ifthemachinecannotbenormallyoperatedafterrepairoradjustment,immediatelystopoperationand
contactJUKIorthedistributorinyourareaforrepairinordertopreventaccidentthatcanresultinper-
sonalinjuryordeath.
8. Ifthefusehasblown,besuretoturnthepoweroffandeliminatethecauseofblowingofthefuseand
replacetheblownfusewithanewoneinordertopreventaccidentthatcanresultinpersonalinjuryor
death.
9. Besuretoperiodicallycleanuptheairventofthefanandinspecttheareaaroundthewiringinorderto
preventreaccidentofthemotor.
Operatingenvironment
1. Besuretousethemachineundertheenvironmentwhichisnotaffectedbystrongnoisesource(electro-
magneticwaves)suchasahigh-frequencywelderinordertopreventaccidentcausedbymalfunctionof
themachine.
2. Neveroperatethemachineinanyplacewherethevoltageuctuatesbymorethan"ratedvoltage±10%"
inordertopreventaccidentcausedbymalfunctionofthemachine.
3. Besuretoverifythattheair-drivendevicesuchasanaircylinderoperatesatthespeciedairpressure
beforeusingitinordertopreventaccidentcausedbymalfunctionofthemachine.
4. Tousethemachinewithsafety,besuretouseitundertheenvironmentwhichsatisesthefollowing
conditions:
Ambienttemperatureduringoperation 5°Cto35°C
Relativehumidityduringoperation 35%to85%
5. Dewcondensationcanoccurifbringingthemachinesuddenlyfromacoldenvironmenttoawarmone.
So,besuretoturnthepoweronafterhavingwaitedforasufcientperiodoftimeuntilthereisnosign
ofwaterdropletinordertopreventaccidentcausedbybreakageormalfunctionoftheelectricalcompo-
nents.
6. Besuretostopoperationwhenlightningashesforthesakeofsafetyandremovethe
powerplugin
ordertopreventaccidentcausedbybreakageormalfunctionoftheelectricalcomponents.
7. Dependingontheradiowavesignalcondition,themachinemaygeneratenoiseintheTVorradio.Ifthis
occurs,usetheTVorradiowithkeptwellawayfromthemachine.
8. Inordertoensuretheworkenvironment,locallawsandregulationsinthecountrywherethesewing
machineisinstalledshallbefollowed.
Inthecasethenoisecontrolisnecessary,anearprotectororotherprotectivegearshouldbewornac-
cordingtotheapplicablelawsandregulations.
9. Disposalofproductsandpackagesandtreatmentofusedlubricatingoilshouldbecarriedoutproperly
accordingtotherelevantlawsofthecountryinwhichthesewingmachineisused.
v
1. Topreventaccidentscausedbyelectricshockhazards,donotopenthecontrolboxcoverofmotor
ortouchthecomponentsinsidethecontrolbox.
1. Topreventaccidentscausedbyabruptstartofthemachine,depressthestartswitchafter
conrmingthatthereisnointerferenceundertheneedlewhenwindingthread.
2. Topreventaccidentscausedbyabruptstartofthemachine,whenturningONthesetreadyswitch
orthreadingswitch,donotplaceyourngersundertheclothpresserfootsincetheclothpresser
foot automatically comes down.
Donotplaceyourngersneartheclothpresserfootwhilethemachineisinoperation.
3. Donotplaceyourngersneartheneedleentryareaorinsidethethreadtake-upcoverwhilethe
machine is in operation.
4. Beforeremovinganyofthecoversprovidedforyourmachine,thepowerswitchhastobeturned
OFF without fail.
5. Ifyourmachineisprovidedwithsafetydevicessuchascovers,ngerguardsandeyeguards,
neveroperateyourmachinewithanyofthemremoved.Wheneveryoudatachanyofthemfromthe
machine, reinstall it in its original position.
6. Castersandadjustingboltshavetobexedbeforeputtingthemachineintoservice.
7. If it is necessary to suddenly stop the machine while it is in operation, press the temporary stop
switch located on the control panel.
8. Carefullytilt/raisethemachinewithyourbothhands,whennecessary,afterhavingturnedOFF
the
power switch.
9. Thebeltloopsupplyingdevicestartstowork,simultaneouslywiththeturning-ONofthesetready
switch,toallowitsforktomoveatahighspeedwithabeltlooptowardtheareaundertheneedle.
Thismeansthattheforkcouldpierceintoyourhandsorngersifyouplaceyourhandwithin
thedangerousarea.So,itisquitenecessaryforyoutoplaceyourhandatthecorrectoperating
position and not to put it in the dangerous area.
10. Toensuresafety,neveroperatethemachinewiththegroundwireforthepowersupplyremoved.
11. The motor is completely silent when the machine is at rest. So, attention has to be paid not to
forget to turn OFF the power to the machine after the termination of work.
12. Ifthemachineissuddenlymovedfromacoldplacetoawarmplace,dewcondensationmaybe
observed.Inthiscase,turnONthepowertothemachineafteryouhaveconrmedthatthereisno
danger of water drops in the machine.
13. Wheninserting/removingthepowerconnector,thepowerswitchhastobeturnedOFFinprior.
14. 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.
15. ThisisaClassAproduct.Inadomesticenvironmentthisproductmaycauseradiointerference,in
whichcasetheusermayberequiredtomakecorrectiveactions.
16. Be careful to keep your hands away from the operating area of the fork, loop cutter, loop draw-out
device,hookmovingdeviceandthepresserfootsincethosepartscarryouttheirinitialoperation
whenyoupresstheRESETswitchafter
havingturnedthepowerON.
Precautions to be taken so as to use the MOL-254 more safely
Hazardous area
○
×
vi
Warning label
against pinching
This label warns
that there is a risk of
pinching of hands in
the table stand when
lifting or lowering the
table.
Safetydevicesandwarninglabels
Eyeprotectioncover
Thisisacoverfor
protecting eyes from
being injured by a
broken needle.
Warning label
(Refer
to the
warning
label on
page i.)
Thelabelgives
the minimum
precautions to be
taken when oper-
ating the sewing
machine.
Electrical-shock
danger label
(EU type)
(Refer to
"Electri-
cal-shock
danger
label"on
page i.)
In order to protect
against electrical
shock, safety
precautions to
betakentoavoid
danger are written
on this label.
Thread take-up
levercover
Thisisacoverforpre-
ventingcontactbetween
the human body and the
threadtake-uplever.
Power switch
This is a switch for disconnecting
the power unit of the sewing ma-
chine from the power supply.
Power switch (EU type)
This switch is used
for disconnecting
the power unit of the
sewing machine from
the power supply.
It is also used as
the emergency stop
switch.
Inaddition,beawarethatthesafetydevicessuchasthe"eyeprotectioncover"and
"ngerguard"aresometimesomittedinthesketches,illustrationsandguresin-
cludedintheInstructionManualfortheexplanation'ssake.Inthepracticaluse,never
removethosesafetydevices.
CAUTION
Motorcover
Thisisacoverforpre-
ventingcontactbetween
the motor and magnet
and the human body.
Warning label
against pinching
This label warns
thatngersor
other parts of
human body can
be pinched in the
thread take-up
lever.
Warning label
against pinching
This label warns
that hands can be
pinched under the
sewing machine.
Warning label
against pinching
This label warns
that there is a risk
of pinching of
hands when the
hook saddle on
frontsidemoves.
Warning label
against pinching
This label warns
that there is a risk
of pinching in the
knife and rotary
drivecylinder.
Warning label
against pinching
This label warns
that there is a risk of
personal injury when
drivingtheloopcut-
ting knife.
Warning label
against pinching
This label warns
that there is a risk
of pinching in the
fork when the fork
moves.
Warning label
against pinching
This label warns that
there is a risk of pinching
of hands in the indicated
partbymovingtheelevat-
ing stand up or down.
Load-center label
This label indi-
cates the center
ofgravityofthe
machine.
vii
EC DECLARATION OF CONFORMITY
We hereby declare that the sewing unit or sewing system described as
complies with the following applicable regulations :
EU Machinery Directive 2006/42/EC
EU EMC Directive 2014/30/EU
EU RoHS Directive 2011/65/EU
Applied harmonized standards, in particular :
EN ISO12100, EN ISO10821, EN IEC 60204-31, EN 50581
Manufacturer :
JUKI CORPORATION
2-11-1, Tsurumaki, Tama-shi, Tokyo, Japan
Model
Description Industrial Sewing Unit
Function automatically make stitches and sew
MOL-254
Please do not hesitate to contact our distributors or agents in your area for further information when necessary.
*
Thedescriptioncoveredinthis"FORTHEUSEOFMACHINE"issubjecttochangefor
improvementofthecommoditywithoutnotice.
Copyright © 2017 JUKI CORPORATION
• All rights reserved throughout the world.
17 · 05 Printed in Japan
2-11-1, TSURUMAKI, TAMA-SHI,
TOKYO, 206-8551, JAPAN
PHONE : (81)42-357-2371
FAX : (81)42-357-2274
http://www.juki.com