4 .
Lifting bags can be configured in various ways depending on the required lift operation .
Multiple bags can be placed side by side where additional lifting capacity is required . In this case , the total lifting capacity is the sum of the lifting capacity of all bags involved in the lift . Remember that bags could be placed longitudinally along the log if space permits , however this will require close and accurate coordination during the lift .
Bags can also be stacked ( depending on bag shape and available space ) to achieve a greater height of lift . In this case , the larger bag should always be placed at the bottom and should always be inflated first .
Key notes for the use of lifting bags :
• Inflating 2 airbags stacked on top of each other will only lift the maximum capacity of the smallest airbag . The largest airbag MUST be placed on the bottom .
• Inflating 2 or more airbags side by side , the sum of the airbags combined becomes the maximum lifting capacity .
• When performing a stacked lift , have the hose connections opposing to easily identify the top and bottom bags .
• Use different coloured hoses for each bag and have the hose colours corresponding to the control box levers .
• Inflate the bottom airbag to 2 / 3 capacity first to create a foundation , then inflate the top airbag to achieve the lift required .
• Inflate airbags that are side by side evenly at the same time . Take into consideration different lifting heights .
• Never stack more than 2 lifting bags .
• Never place anything between or on top of the bags as there is a possibility that the object will be ejected during lifting .
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