Katiak :  User Guide

CARBON STEEL CHAINS

Regulation:

The commercial chains have not been tested for strength in the sense of DIN 685 Part 3, and therefore cannot be used for lifting loads, as a run limiter or transportation in the sense of DIN15 003, nor can it be used for the static suspension of loads.

DIN764 Chain (Medium Link)

Regulation:

Rounded steel chains for conveyors and general use. 

Chains are tempered through cementation, according to regulations, and are preferably used for conveyor drives. 

They should not be used for lifting, load limiters or transportation, as the DIN15003.

DIN 766 (Short Link)

Regulation:

Rounded steel chains for use in shipping, conveyors, bucket elevator, mining, lifts fishing nets and general purposes.

Class A:  Calibrated and tested (with test certificate, 10% surcharge on the price). 

Class B:  Neither calibrated nor tested.

DIN 763 Chain (Long Link)

Regulation:

Chains for general purposes, can also be calibrated for use in conveyors etc.

According to regulation these chains should not be used for load suspension, limiting or supports, or any type of dynamical lifting processes whatsoever as the DIN 15003 chains can.

Oval Chain

Regulation:

These chains are for general purpose use, agriculture etc. The values given in the tables are to be used a guide and have not been tested for resistance. The chain can be tested on order and Katiak can issue its corresponding test certificate. This chain is not suitable for lifting.

G 80 and G 100 lifting slings

All products should be kept in the correct conditions during transportation, use and storage as outlined below.

Before the first use :

The assembly, use and dismantling of the equipment should only be carried out by authorised personnel. Before using the chain for the first time, the following should be examined :

  • The necessary paperwork for the equipment (conformity declaration, inspection certificate, etc.)
  • The workload and the ID marked on the chain should correspond with the information indicated on the test certificate, and all the chain's information detailed on the ID tag.
  • The assembly of the equipment cannot be done until it has been verified that the machine it is going to be used on conforms with the EU Guidelines and their amendments for machinery. (European Laws and Regulations)
  • At appropriate intervals, depending on the severity of the working conditions, the chain should be checked for damage. The chain should be inspected each time it is to be used for lifting. All the user instructions should be kept in an easy-to-reach place so it is available for users to consult, until the chain is withdrawn.
  • EU Guideline and its amendments for machinery, 89/392/EWG, should be consulted.
  • Instructions for chain use and operation, DIN 685-part 5-EN818-6, should be consulted.
  • Crane safety regulations, BGV D 6 should be consulted.
  • Suspension load services for lifting should be consulted.
  • Chain components, EN 1677-2 should be consulted.
  • Principles for industrial product lifting safety checks should be consulted.

The following should also be taken into account:

  • The weight to be lifted.
  • The free mobility of the hook's safety lock.
  • The use of the chains in chemical conditions, acids or steam, should be restricted or limited.
  • The effect of temperature on alloy chains and components.
  • Any shaking or damage to the chain from the loading hitting against it while lifting.
  • Any surface treatment, especially zinc coating, can only be done by the manufacturers.
  • When lifting, hands and other body parts should be kept away from the components.
  • Care should be taken when closing the hooks. Risk of injury.
  • When not being used the chains should be hung on a stand.
  • Check the chains and other components are free to move on the crane hook.
  • When using open hooks, take special care of their positioning.
  • If necessary, protect the tensor screws using closing elements to avoid automatic opening.
  • Protect the chain by padding or covering corners.
  • The safety locks should not be obstructed when the hooks are loaded.
  • The top part of the hook and the lifting hooks should be compatible.
  • The lifting equipment should be the correct one for the job being done.
  • The workload should be reduced when the lifting is being done over a high gradient.
  • User instructions should be checked when using an alloy chain in extreme temperatures.
  • The workload limits will be reduced when dealing with endless and basket slings.
  • Extreme care should be taken when using hooks to lift melted metal and chemical products.
  • The chain should be loaded correctly to avoid chain and load damage.
  • Operators should be kept a safe distance from the lifted load.

Particularly forbidden :

  • The combination of different graded products, except clamps.
  • The use of chains which are not meant to be used with grade 80.
  • Overloading.
  • Combining products with different workload limits, unless the work load written on the ID tag corresponds to the weakest component.
  • The use of twisted or knotted chains.
  • The use of locks or cables to join components.
  • The use of deformed components and rigid or lengthened chains.
  • Lifting or pulling loads with sharp edges without padding.
  • Drive equipment over chain sling.
  • Wrap the chain around a loading hook or tension point.
  • Modify products by welding, burning or any other mechanical procedures.
  • Make unacceptable changes to the established protocols, like using a 2 leg sling with shortening hook as a 4 leg sling.
  • To tilt the load, use with a coupling chain.
  • Put the load on the edge, side or back of the hook..
  • Load the connectors, coupling links on their side.
  • Use a gradient of more than 60º.
  • Turn the swivel hooks while loaded.

Maintenance and Tests :

  • The chain should be checked before being used. Should it be damaged advice should be sought from a chain expert before using it.
  • The equipment should be withdrawn if there is evidence of any of the following :
    • Illegible ID tags.
    • Breakages, deformations. Cuts, knicks, scores or chinks.
    • Serious corrosion.
    • Heating from exposure to temperatures higher than those permitted.
    • Lengthening of more than 5% on the advertised length by the manufacturer. The elongation of the total chain will not exceed 5% of original length.
    • To determine the withdrawal of a piece of equipment for abrasions in the diameter of a coupling link, the horizontal and the vertical lengths should be measured. If the reduction is more than 10%, the equipment should be withdrawn.
    • Withdraw the equipment if the widening is 10% more than normal, or if the safety latch doesn't close flush.
    • Withdraw the hooks if the safety latch is missing or damaged.
  • The equipment should be repaired by a qualified professional. The manufacturer or an expert technician should be contacted with any problems.
  • Regular inspections should be carried out.
  • Inspections should include a visual inspection and should be carried out at least once per year. Every three years the inspection should include a Magnaflux test to detect cracks in the chains.
  • In a new sling, a chain file card must be opened. In this, a description of the chain will be kept along with the certificate ID. The inspections will also be detailed here. On the completion of the inspection the condition of the chain and its accessories should be written. If any damages are repaired, these too must be kept on the file.
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