Rigging work
12.7 Rigging work on the main boom
12 - 100 3 302 819 en Operating manual
GMK3060
13.12.2018
12.7.6 Locking/unlocking the lifting limit switch
Locking If two lifting limit switches are installed, you must lock the lifting limit switch not
used in order to enable all crane operations.
• Remove the lifting limit switch weight.
• (A) – Remove the cap (1).
• Pull the rope (2) down; the lifting limit switch is
triggered.
• (B) – Secure the rope (2) in this position using
the cap (1) – the lifting limit switch is locked.
Unblocking You must always release the locking before you place a lifting limit switch weight
around the hoist rope.
• (A) – Pull the rope (2) down and take off the
cap (1) – the locking is released.
• (B) – Fit the cap (1) onto the lifting limit switch.
S
Risk of damage if the lifting limit switch is locked!
If the lifting limit switch on which the lifting limit switch weight hangs is locked,
release the lock.
This prevents the hook block hitting the main boom head, causing damage to the
hook block, main boom head and hoist rope.
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