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19. For safe operation
WARNING
- 193 -
Fo
r s
afe
op
er
atio
n
19-2-6 Boom extension and retraction
(0099-0018-3E)
(1)
Lower the hook sufficiently before you extend the boom.
Extending the boom can put the hook into an overhoisted
condition which causes an automatic stop.
(2)
Be careful when extending and retracting the boom with a load
suspended on it.
(3)
Do not extend the boom more than necessary
Extending the boom more than necessary does nothing but
making the deflection of load larger, reducing the rated weight
and increasing the bending load applied to the boom. This also
makes the progress of the work instable and the fuel
consumption larger.
Keep the boom length as short as practicable throughout the
working period.
(4)
Confirm the boom extension/retraction sequence
Confirm the boom extension/retraction sequence and always
control boom extension/retraction in the correct sequence. The
figures in the lifting capacity chart are set based on the condition
that the boom is extended and retracted in the correct sequence.
If the lifting operation is conducted by extending the boom in
an improper sequence, troubles such as damaged boom could be
caused.
(5)
Never use the boom to push or pull objects
If you use the top of the boom to push cargo along a truck bed
or push objects around the construction site, you will damage
the boom top. If you push or pull objects by slewing the boom,
you could bend the boom.
To move objects, you must completely hoist them clear of the
ground even if this seems time consuming. Alternatively use a
forklift or other specialist cargo handling machine. Do not use
the crane for purposes it was not designed for.
Summary of Contents for PREMIUM CITYRANGE CR-200RF
Page 2: ...218711 背厚 14 5 mm 中 ...
Page 14: ... 12 4 Dimensions T217591 021 0E Specification of CR 200Rf ...
Page 16: ... 14 MEMO ...
Page 24: ... 22 MEMO ...
Page 30: ... 4 MEMO ...
Page 36: ... 10 MEMO ...
Page 38: ... 12 3 General operation devices 2 Outside the cab ...
Page 60: ... 34 MEMO ...
Page 74: ... 48 MEMO ...
Page 82: ... 56 7 Air conditioner 7 6 Display when errors are detected T217921 020 0E ...
Page 120: ... 94 MEMO ...
Page 129: ... 102 MEMO ...
Page 138: ... 111 17 Drive operation devices Drive operation devices ...
Page 139: ... 112 17 Drive operation devices ...
Page 153: ... 126 17 Drive operation devices ...
Page 154: ... 127 17 Drive operation devices Drive operation devices ...
Page 237: ... 208 21 Crane operation devices 21 Crane operation devices 061A 0005 0E 1 Inside the cab ...
Page 238: ... 209 21 Crane operation devices Crane operation devices ...
Page 239: ... 210 21 Crane operation devices 2 Outside the cab ...
Page 259: ... 230 22 Crane operation when the outriggers are used ON OFF ...
Page 299: ... 270 24 Crane operation NOTE Extension retraction sequence for each boom length ...
Page 320: ...26 Preoperational checks Pre drive checks 290 ...
Page 321: ...Preoperational checks Pre drive checks 26 Preoperational checks Pre drive checks 291 ...
Page 322: ...26 Preoperational checks Pre drive checks 292 ...
Page 329: ...Preoperational checks Pre drive checks 26 Preoperational checks Pre drive checks 299 ...
Page 330: ...26 Preoperational checks Pre drive checks 300 ...
Page 331: ...Preoperational checks Pre drive checks 26 Preoperational checks Pre drive checks 301 ...
Page 332: ... 302 MEMO ...
Page 340: ... 310 MEMO ...
Page 342: ...899 92187110 ...