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Avoid contact of loads with obstructions.Accelerate and decelerate loads smoothly.Perform a preliminary lift of a few inches to establish that a vacuum lifting device has been correctly applied and that a stable lifting vacuum level exists.Do not lift loads higher than necessary.
#Vacuum crane lift free
When adjusting Crossarms and pads, keep vacuum lines free of twists and kinks.Do not push or pull the load with your hands on the load.Use the handle bars to position the lifter and guide the load.Do not use lifter to drag loads over floors.Use lifter only for horizontal lifting and free overhead transport.Use lifter only as a lifting and handling tool.If sheets stick together, place the load down immediately and separate sheets prior to lifting. Do not lift more than one work piece at a time.Consult ASE website steel plate weight calculator for recommended load overhang tables. Do not use lifter on loads beyond recommended length and width for your application.Never lift loads heavier than rated lifting capacity.Do not use lifter on badly rusted, pitted, or scaled loads.Use lifter only on clean loads brush off loose debris, dirt, scale, chips, etc.De-rate load capacity by 3.5% for each 1000 ft.Refer to the lifter specifications to determine at what vacuum level the lifter is rated. All loads should be tested to determine the maximum achievable vacuum level.
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The degree of porosity/roughness affects the lifter’s ability to make up for air leakage.
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