Crane operation
11.5 Crane operation with main boom
Operating manual 3 302 819 en 11 - 81
GMK3060
13.12.2018
11.5.2 Main hoist
You can reeve the hoist rope of the main hoist on the main boom or on the lattice
extension.
You can display the operating hours (1) of the hoist;
à p. 11 - 135.
s
G
Risk of accidents from accidentally operating a hoist!
Always switch off the hoist that is not in use!
Never operate the hoist if the hook block is unreeled and the hoist rope is
completely wound onto the drum.
– The rope will slacken in the course of the Lower movement. Rope loops will
form, which can cause the load to slip and damage the hoist rope.
– The switch-off point of the lowering limit switch shifts in the course of the Raise
movement. The lowering limit switch will lose its function as a safety device.
G
Risk of accidents when raising loads at an angle!
Loads can cause the main boom to bend, resulting in the hoist rope no longer
being aligned in a vertical position. Compensate for the bend by lowering the
boom so that the load will be lifted vertically. In this way, you can prevent the load
dragging and helpers being injured.
Inform all helpers about this issue.
G
Danger due to slack rope!
Only use hook blocks and lifting gear of the minimum weight prescribed in the
Lifting capacity table, depending on the reeving and boom length. This prevents
slack rope developing at large heights when lifting without a load. This can result
in the load slipping during subsequent lifting procedures.
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