Ketten Wälder Cromox Quick start guide

General Safety Notes for
Chain Slings (Grade 50/60)
Ketten Wälder GmbH
Chain Technology
Gewerbegebiet 5
83093 Bad Endorf, Germany
Fon [phone]
Fax [phone]
[e-mail]
www.ketten-waelder.de
Last revised: January 2018

Instructions for safe use and avoidance of danger.
Keep this safety note/manufacturer's declaration for the entire utilisation time.
 •Applicationisonlyallowedforslingingandliftingloads.
 •Itistobemadesurethatthesafeworkingloadsindicatedontheattachedtagsarenotexceeded.
 •Changesinthesafeworkingloadindependenceofthetemperaturetareasfollows:
  Usewithintheadmissibletemperaturerangemeansnopermanentreductionofthesafe
  workingloadsafterreturntoroomtemperature.
 •Useinacidsandalkalisorapplicationinacidoralkalinevapoursisonlyadmissibleif
  thematerialisresistanttocorrosion.
 •Anyself-effectedmodifications,suchasexchangeofcomponents,thermalorgalvanictreatment,
  willinvalidatetheproductliabilityofKettenWälderGmbH.
 •Inthecaseofparticularlyendangeringconditions(liftingofpersons;causticsubstances;
  liquidmetals;etc.),thedegreeofendangermentistobeassessedbyacompetentperson
  andthesafeworkingloadistobeadjustedaccordingly.
 •Oncontinuousoperation,i.e.atautomatedproductionlineswithhighworkcyclesandoftenrepeated
  similarmovementsandwaysoftransportation,ahighdynamicstrain(=>20.000stresscycles)occur.
  Thereistheriskofdamageoftheproductsduetothehighdynamicstrain.Inthesecasesitisessential
  toreducethetensioni.e.correspondingtomechanismgroup1BmM3acc.toDINEN818-7byusinga
  highernominalthicknessorsize.
Priortothefirstapplication,itistobemadesurethat
 •thechainslingdeliveredisexactlytheonethatwasordered,
 •thetestcertificatehasbeenprovided,
 •thechainslingiscompletewithmarkingsandindicationsastothesafeworkingloadand
  thatthosedataareconsistentwiththetestcertificate,
 •allthedetailsconcerningthechainslinghavebeenincludedinthecardindex.
Prior to each use
the chain has to be visually inspected to check if there is any apparent damage or sign of wear.
 •Anyparticularspecificationsregardingtheloadhavetobeobserved.
 •Beforestartingtheliftingoperation,ithastobemadesurethattheloadisfreely
  movableandthatitisnotanchoredorfixed.
 •Themassoftheloadmustbeknown.Ifnot,itcanbetakenfromdocumentsor
  shallbedeterminedbycalculation.
 •Thelocationofthecentreofgravityshouldbedeterminedwhenchoosingthesling
  pointsandshouldmeetthefollowingconditions:
 •Toensurethestabilityoftheloadwhenusingmulti-legchainslings,theslingangleßshouldbe>15°
  andshouldbewithintheindicatedrange.Itmust,however,notexceed60°(seeexampleinFig.1).
1. Choosing
the appropriate
chain sling:
2. Visual inspection:
3. Handling
of the load:
Safety Notes
2
General Safety Notes for CROMOX®Chain Slings (Grade 50/60)
d
chain slings lifting point
tobeperpendicularoverthecentreofgravity
forbothlegstobeoverthecentreofgravity
ifeverpossibletobeevenlydistributedoveraplaneaboutthecentre
ofgravityandlocatedoverthecentreofgravity
single-leg
double-leg
3- and 4-leg
-40°C to + 250°C over 250°C to 350°C* over 350°C to 450°C
100 % 75% 50 %
W.L.L.
*1.4462max350°Callowed

Safety Notes
3
 •Theloadhookforattachingthechainslingshouldbedirectlyoverthecentreofgravity.
 •Onlyslowmovementsareallowed.
•Enoughspaceforliftingprocessmustbeguaranteed.
 •Workershavetokeepsafetydistance,nocontacttotheload.
Explanation of the tag:
 Frontview2–4legs    Rearview1leg
 •Pulllooseunloadedchainthroughcircularopeningtodesiredlength.
 •Hookthechainintothepositionasshowninthephoto.
•Ensurecorrectfitwhileliftingprocess.
  •Neverloadshortenedloosechainstrand.
  •Payattentiontoloadpeaksduetoasymmetricweightdistribution.
    •Chainlegsmustnotbetwistedorknotted.
    •Whenusingamultiplelegchainslinginaverticalhitch,
    thehooksmustfaceoutwards.
 •Chainlegsmustnotbetwistedorknotted.
 •Aloadshouldalwaysbeattachedtothehooksaddleandmustneverbeappliedtothetipofahook.
 •Hooksandsuspensionlinksmustbefreelymovableinordertopreventdeformationduetobendingstress.
 •Whenusingamultiplelegchainslinginaverticalhitch,thehooksmustfaceoutwards.
 •Whenusingthechokerhitch,thesafeworkingloadisreducedto80%.
 •Inordertoavoiddamagetochainsortotheloadwhenusingchokerhitches,itmaybenecessary
  touseintermediatelayersoredgeprotection.
4. Aplication
shortening
devices:
Warning
5. When applying
a load to a sling,
the following has
to be observed:
Loadactingontheslingleg
Horizontalforce
Thehatchedareashowsanglesof
inclinationgreaterthan60°,where
slingchainsmustnotbeused.
Fig. 1
d
angle
angle
quantityoflegs
quantityoflegs
CE declaration
angle
chain diameter
EWL if
applicable
WLL
grade
grade
chain diameter
date
EWL if
applicable
WLLWLL
Ketten Wälder
SNnumber
angle
angle
quantityoflegs
CE declaration
angle
EWL if
applicable
WLL
grade grade
chain diameter date
EWL if
applicable
quantityoflegs
chain diameter
Ketten Wälder
SNnumber
WLL WLL

 •Inordertoavoidthataloadswingsinadangerousmanner,itisrecommendedtouseaholdingrope.
 •Donotshock-loadchainslingsorjerkloads.
 •Inindicatingthesafeworkingload,itisassumedthattheindividuallegsofthechainslingareloaded
  symmetrically.Symmetricalloadingcanbeassumedifallofthefollowingconditionsaremet:
utheloadislessthan80%oftheratedsafeworkingloadand
utheangleofinclinationforeachchainlegisnotlessthen15°and
utheanglesofinclinationofthechainlegsdonotdeviatebymorethan15°fromeachotherand
utheslingattachmentpointsfor3-and4-leggedchainslingsarelocatedinasling
   planeofnotmorethan15°.
 •Forunsymmetricalloading,theclassificationoftheliftingoperationaswellasthedetermination
  ofthesafeworkingloadistobeentrustedtoacompetentperson.Alternativelyinthecaseof
  unsymmetricalloading,thesafeworkingloadshouldbereducedto50%oftheratedvalue.
 •Whenusingmulti-leggedchainslings,thefollowingistobeobservedifnotallofthelegs
  arerequiredforlifting:
uIndividuallegswhicharenotbeingusedshouldbehookedbackontothemasterlink.
uInsuchcases,thefollowingloadfactorsapply:
 •Allinfluencingfactorsaretobetakenintoaccountwhendeterminingaslingtypeandchoosing
  theappropriatechainsling,withthesafeworkingloadtobegreaterthantheloadtobelifted.
 •Safetyduringliftingoperations:
uISO12480-1istobeobservedintheplanningandcarryingoutofliftingoperations.
uHandsandotherbodypartsaretobekeptclearwhentauteningthechainsling.
uNootherpersonsmustbeputindanger.
 •Theplacewheretheloadistobeputdownshouldbepreparedandmadesufficientlyaccessible.
 •Thegroundmusthavesufficientload-bearingcapacity.
 •Itmaybenecessarytostabilisetheloadbyusingwoodenblocksorthelike.
 •Inordertopreventdamage,theslingchainmustnotbewedged,norpulledoutbymeansoftheliftinggear.
 •Storageofchainslingsthatarenotinuse:
uInordertominimisecorrosionattacksonchainslingsthathavebeenusedinacidsoralkalis
   orinacidoralkalinevapours,thosechainslingsshouldbecleanedthoroughlyalsobeforeremoving
   themfromoperationtemporarily.
uChainslingsshouldbestoredonspeciallydesignedandprovidedracks.
   Ifchainslingsarelyingonthefloor,thereisariskthattheymightgetdamaged.
uChainslingsremainingonthecranehookshouldbehookedbackontothemasterlink.
uIfchainslingsarenottobeusedintheforeseeablefuture,theyaretobecleanedandprotectedagainstcorrosion.
Inspectionsshouldbeperformedbyacompetentpersonatintervalsofnomorethan12months.
Ifnecessary,theseintervalsshouldbeshortenedindependenceofthecircumstancesofuse.
 •Priortoinspection,thechainslingsaretobecleanedthoroughly.
 •Anycleaningmethodthatdoesnotattackthebasicmaterialisadmissible,whereasany
  processesorproceduresthatmaycausehydrogenembrittlement,overheatingormaterialabrasion
  orwhichmayhidesurfacedamagearetobeavoided.
 •Sufficientlightingistobeprovidedduringinspections,andallcomponentsofthechainsling
are to be examined.
 •Bymeansofvisualinspections,thechainslingsaretobecheckedforunmistakable
  identification(tags)aswellasforanyvisuallynoticeabledefects.
If any of the following defects are found, the chain sling has to be removed from
operation and inspected by a competent person or serviced/repaired:
uMarking/identificationillegibleormissing.
uDeformationofsuspensionorslingparts.
uInadmissibleelongationofchainlinks,differencesinleglengths.
6. When putting
the load down,
the following is
to be observed:
7. Maintenance:
Safety Notes
4
d
Type of chain sling Number of Factor to be applied with
individual legs used respect to the rated SWL
 1 1/2
 2 2/3
 1 1/3
2- leged
3- and 4-legged
3- and 4-legged

Safety Notes
5
d1+ d2
  =<0,9xdn
2
Fig. 2
uIf,asaresultofwearandtear,thenominalthicknessofachainlinkis<90%(seeFigure2).
uDamage(cuts,notches,grooves,cracks,discolorationduetoheat,excessivecorrosion,
   bentortwistedlinks,orotherdefects).
uSignsofwidening(excessivethroatopening)ordeformationofhooks.
   Thewideningmustnotexceed10%ofthenominalmeasure;ifhookswithsafetycatchareused,
   thecatchmustnotbecomedisengaged.
 •Inspectionsaretoberecordedandprovedinwriting.
 •EachindividualpartofthechainslinghastomeettherequirementsofDIN5687,
  DIN5688Part1andDIN7541.
 •Individualchainlinksarenottobereplaced-replacecompletelegsinstead.
 •Anyindividualpartswhicharebroken,noticeablydeformed,seriouslycorroded,orshow
  depositswhichcannotberemoved,aretobediscardedorreplaced.
 •Minornotchesorfurrowsinpartsofchainslingsmaybeevenedoutiftheremainingmaterialthickness
  inthispointis>90%ofthenominalthicknessandnosuddencross-sectionalchangeisnoticeable.
 •Weldedchainslingsmayonlyberepairedbythemanufacturer.
 •Ifweldingoperationshavebeenperformedonchainslings,eachindividuallegwhichhas
  beenrepairedhastobetestedsubsequentlywithtwicetheSWLvalue.
 •Replacementofmechanicalconnectionlinksrequiresnoloadtestingiftheindividualparttestingis
certified.
uCELabelforcompletelyassembledchains.
uThelabelguaranteesthatthetechnicalrequirementsoftheECguidelinehavebeenmet.
It is prohibited to assemble chains and components of different grades.
d
8.
When performing
maintenance
work, the
following is to
be observed:
Warning: