XCMG QAY220, Operation Manual

Page: 141 / 172

QAY220 All Terrain Crane Operation Manual
9-7
No. Illustrations
30
31
32
33
34
Cautions Remarks
Do not lower the hook block in the free-
fall mode with a load suspended.
Do not move the winch brake abruptly.
When lowering the hook block, leave at
least three turns of the winch rope on the
winch drum.
Sufficiently lower the hook block before
extending the boom.
With the boom fully retracted, check
the length indication of the controller.
Extend the boom only after making
sure that the indication is within the
specified range.
Extend boom according to the order of
the boom section from the inner to the
outer; and take the reverse order for
retracting boom.
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General cautions in operation
Chapter 9
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