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11-19
HOW TO OPERATE CRANE
Sequence of boom extension
The boom is to start extending from outer sec-
tions of boom.
Sequence of boom retraction
The boom is to start retracting from top sec-
tions of boom.
Sections of boom shown in the box
indicate that they are telescoping
simultaneously.
Remarks
When telescoping speed of boom is
decreased due to high viscosity of oil
during winter time or in low temperature
environment, try telescoping the boom to
and from one - cycle bet ween both
extremes, the shortest and the longest, to
recover the speed as the oil in the boom is
discharged to be replaced with warm oil.
When the boom is lowered close to
horizontal position with all the boom
sections fully extended (Boom:
1+2+3+4+5+6
,
only URW376C4U), the boom may not be
retracted with the rated load hoisted.
This is not a fault.
Remarks
URW376C4U
URW506C4U
Ԙ
ԙ
URW375C4U
URW505C4U
①
②
③
②
①
②
②
③
URW547C4U
①
②
②
③
Содержание URW370C4U Series
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Страница 248: ...HEAD OFFICE Nihonbashi nishikawa Bldg 5 3 Nihonbashi 1 chome Chuo ku Tokyo 103 0027 Japan...