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Crane operation
11.3 Crane operation with main boom
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Operating manual GMK 6400
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11.3.3
Main hoist
You can reeve the hoist rope of the main hoist on the main boom or on the
lattice extension.
You can have the operating hours of the hoist displayed;
G
Risk of accident from accidentally operating a hoist
Always switch off the hoist that is not in use.
Never operate the hoist if the hook block is unreeved 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 destroy 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 accident when raising loads at an angle
Loads can bend the main boom, 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 from dragging and helpers from being injured.
Inform all helpers about this issue.
G
Danger due to slack rope
Only use hook blocks and sling 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.
Summary of Contents for GROVE GMK 6400
Page 1: ...3 112 993 en 12 07 2013 Operating manual Part 1 Driving ...
Page 9: ...Correction sheet GMK6400 3 302 804 en 7 27 08 2018 Hook tackle Reeving A 1x ...
Page 10: ...27 08 2018 8 3 302 804 en Correction sheet GMK6400 Blank page ...
Page 12: ...06 06 2014 2 3 113 115 en Correction sheet GMK6400 Blank page ...
Page 18: ...22 01 2014 6 3 113 060 en Additional page GMK6400 Blank page ...
Page 26: ...3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
Page 28: ...3 112 993 en Operating manual GMK 6400 12 07 2013 ...
Page 32: ...Overview 1 4 Terms used 1 4 3 112 993 en Operating manual GMK 6400 12 07 2013 1 4 Terms used ...
Page 34: ...Overview 1 4 Terms used 1 6 3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
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Page 383: ...Operating manual GMK 6400 3 112 993 en 12 07 2013 8 8 Index ...
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Page 407: ...3 112 993 en 12 07 2013 Operating manual Part 2 Crane operation ...
Page 415: ...Correction sheet GMK6400 3 302 804 en 7 27 08 2018 Hook tackle Reeving A 1x ...
Page 416: ...27 08 2018 8 3 302 804 en Correction sheet GMK6400 Blank page ...
Page 418: ...06 06 2014 2 3 113 115 en Correction sheet GMK6400 Blank page ...
Page 424: ...22 01 2014 6 3 113 060 en Additional page GMK6400 Blank page ...
Page 432: ...3 112 993 en Operating manual GMK 6400 12 07 2013 Blank page ...
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Page 937: ...Operating manual GMK 6400 3 112 993 en 12 07 2013 15 15 Index ...
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