Malfunctions during crane operation
14.5 Emergency operations and programs
14 - 36 3 302 819 en Operating manual
GMK3060
13.12.2018
Checks before telescoping
• Before telescoping, check that the following conditions are met.
– The telescoping cylinder is at the locking point
and is locked, symbols (2) are green.
– The telescopic section is unlocked, symbol (3)
(select no more than 2 x), symbols (1) are
red.
Retracting and locking a telescopic section
During telescoping you may not select Lock. Under no circumstances should you
select and confirm the symbol (1).
G
Risk of accidents from sudden retraction of a telescopic section!
You can select and confirm the symbol for unlocking the telescopic section only
a maximum of 2 times. If this does not start the unlocking procedure, contact
Manitowoc Crane Care.
S
Risk of damage to the main boom!
If you select Lock during telescoping, the locking pins on the telescopic section
are slid out immediately and they can damage or tear the electrical or hydraulic
components in the main boom.
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