RUD Lifting and Lashings

Regular Maintenance and Testing

VIP

A thorough examination of the chain slings should be carried out by a competent person at intervals in accordance with national legal requirements, but not exceeding twelve months.

This interval should be less where deemed necessary in the light of service conditions. Recommendation in Germany is the electromagnetically crack test.

Visual testing: Reveal any exterior defects, such as bent chain links, twisted chain links, or chain links with notches. Examination of the components, correct fitting as well as completeness and efficiency of safety devices.

Examination of wear and lengthening:
1. Examine wear of diameter
2. Examine plastic elongation caused by overloading
3. Examine pitch elongation due to wear in the diam. Simple testing with VIP-testing gauge.

Accessories: Lifting hooks must be replaced when the opening of the mouth is deformed more than 10%, and also if the hook is worn more than 5%, or if it shows deep notches. Maximum permitted wear of VG-Bolt diam. –10%. Same applies for lateral bending of the hook. When exchanging components use new load and retaining pins.

Do not use chains over sharp edges. Sharp edge: radius of edges < chain diam.	20% reduction in capacity, otherwise use next larger chain, or use edge protection.
Chains must be free of knots.	Use appropriate shortening component.
Do not use twisted chains	Use a swivel or shortening component.
Master links must be moveable in the crane hook.	Therefore use special master links in special dimensions VSAK.
In case of unsymmetrical load, pay attention to reduced WLL	refer to tables.
Consider possible influence of temperature	refer to working load table.
Apply the load to hook on the bottom and not at the top	It is reasonable to use special hooks, which are designed and proved correspondingly
Avoid shock loading	If this is not possible, use next larger chain diam.

VIP-chains and VIP-components must not be used in aggressive chemicals and acids.
Surface treatments may only be effected by the manufacturer. Consider influence of temperatures.

We do not assume responsibility for damage, caused by ignoring these standards, specifications and instructions mentioned above! The following specifications have to be strictly observed: DIN 685, EN 818, UVV-VBG 9a

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