Malfunctions during crane operation
14.5 Emergency operations and programs
Operating manual 3 302 690 en 14 - 35
GMK4100L-1
23.11.2017
Checking functioning of emergency program
The procedure to follow depends on the current status of the telescoping
mechanism.
• Check the current status of the telescoping mechanism and follow the
cross reference which corresponds to the current status.
– Status 1 – Telescoping cylinder at locking point;
à p. 14 - 35.
– Status 2 – Telescoping cylinder moving with telescopic section;
à p. 14 - 36.
– Status 3 – Telescoping cylinder on return run (without telescopic
section);
à p. 14 - 36.
Status 1 – Telescoping cylinder at locking point
• Carry out the check for the current locking status and observe the result.
– Telescoping cylinder and telescopic section
locked
• Select and confirm one of the symbols for
unlocking, e.g. the symbol (2) for the
telescopic cylinder.
• Check that the symbol (1) is displayed.
– Telescoping cylinder or telescopic section
unlocked
• Select and confirm one of the symbols
for locking, e.g. the symbol (2) for the
telescopic cylinder.
• Check that the symbol (1) is displayed.
–Result
If the required symbol (1) is displayed, you can operate the emergency
program;
à Retracting with emergency program, p. 14 - 38.
If the symbol (2) is still displayed, the emergency program will be
disabled. Contact
Manitowoc Crane Care.
s
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