Information For Save Use and Maintenance

The following information aims to give advice and explain the most common questions in order to ensure safe and proper use of lifting equipment. It is of the utmost importance that this information is known to the user, and in accordance with the Machinery Directive 2006/42/EC this information must be delivered to the customer. Extreme Temperature Conditions Read more>>>.. Surface Treatment Read more>>>.. Asymmetrical Loading Conditions Read more>>>.. Severe Environment Read more>>>.. General advice Read more>>>.. Protect yourself and others Read more>>>.. Intensive use Read more>>>.. Method of Connection Read More>>>.. Sharp edges Read More>>>.. Maintenance Read More>>>..

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Extreme Temperature Conditions The in-service temperature of the G8+ chain and G10 components affects the WLL as following: Upon return to normal temperature, the sling reverts to it’s full capacity within the above temperature range. Chain slings should not be used above or below these temperatures.

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Surface Treatment Note! Hot-dip galvanizing or plating is not allowed outside the control of the manufacturer.

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Asymmetrical Loading Conditions For unequally loaded chain legs we recommend that the WLL are determined as follows: * 2-leg slings calculated as the corresponding 1-leg sling; * 3 and 4-leg slings calculated as the corresponding 1-leg sling. (If it is certain that 2-legs are equally carrying the major part of the load, it can be calculated as the corresponding 2-leg sling.)

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Severe Environment Chain and components must not be used in alkaline (>pH10) or acidic conditions (<pH6). Comprehensive and regular examination must be carried out when used in severe or corrosive inducing environments. In uncertain situations consult your Gunnebo Lifting dealer.

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General advice - Make sure the sling is precisely as ordered. - Check whether the supplied certificate is in order. - Check that the identification and the workload on the nameplate of the composition match the information on the certificate. The following information on the nameplate is compulsory: WLL, number of chain legs, nominal chain diameter, certificate number, manufacturer, CE mark and date. - Ensure that the full details of the chain sling are recorded. - Take care that the employees of Gunnebo use the slings with proper instructions and received the training they need.

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Protect yourself and others For lifting, the composition should be checked for damage and / or deformation. - Make sure the weight of the load, corresponding to the WLL on the nameplate for the specific configuration of the chain composition. - Never use a sling without a legible valid ID tag. - Ensure that the load can be safely put down. - Never overload a sling and avoid shock loads. - Never use a worn or damaged chain composition. - Never sit on the load during lifting. - Never go under a suspended load. - Please note that the load may swing or rotate. - Beware of fingers while lifting and dropping the load.

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Intensive use Here they mean many of the same movement against the maximum WLL of the chain composition in an industrial environment, for example. In this case, we recommend the composition after 20,000 lifting movements preventive replacement. In case of lifting approximately 60 movements per day (full load), this means the annual replacement of the composition.

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Method of Connection A chain sling is usually attached to the load and the crane by means of terminal fittings such as hooks, links etc. Chain should be without twists or knots. The lifting point should be seated well down in the terminal fitting, never on the point or wedged in the opening. The terminal fitting should be free to incline in any direction. The chain may be passed under or through the load to form a choke hitch or basket hitch. The chain should be allowed to assume its natural angle and should not be hammered down. Use edge protection to prevent sharp edges from damaging the lifting equipment. A rule of thumb is that the radius of the edge >2 x chain diameter. When lifting with chain directly on lugs we recommend that the lug diameter >3 x the pitch of the chain. If a lug diameter is less than stipulated above, the WLL must be reduced by 50%. Home pocket loop shall have an internal loop top angle of max. 30°. Rule of thumb: Cross dimension of the load shall be max. 0.3 times the loop length (LL).

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Sharp edges The angle should not be smaller than 90 degrees. - Multiply the aforementioned reduction factor with the WLL of the chain label to determine the correct WLL. - Prevent slipping of the chain over a sharp edge during lifting. - Make sure with flattening that the load is balanced to prevent slipping. If the chain is around a lug or axle we recommend that its diameter is at least 3 times greater than the pitch of the chain. Below this value, the WLL should be reduced by 50%. In sling chains in which the shortener, is also used as a point where the chain is connected, the apex angle of 30 degrees should not be exceeded.

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Maintenance Periodic thorough examination must be carried out at least every 12 months or more frequently according to statutory regulations, type of use and past experience. 1. Overloaded chain slings must be taken out of service. 2. Chain and components incl. load pins which has been damaged, deformed, elongated, bent or showing signs of cracks or gauges all be replaced. Carefully grind away small sharp cuts and burrs. Additional testing by magnetic particle inspection and/or proof loading at max. 2 x WLL may be carried out. 3. Check the function of latches, triggers and retaining pins / bushes, replace when necessary. Always use Gunnebo Lifting original spare parts. 4. Max. clearance between hook and latch. Note: For a Griplatch hook measure the difference between dimension A with unloaded spring and dimension A when the latch is pressed against the hook. Clearance B not applicable. 5. The wear of the chain and component shall in no place exceed 10% of the original dimensions. The chain link wear - max. 10% - is defined as the reduction of the mean diameter measured in two directions.

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