Locking/Unlocking The Lifting Limit Switch - Manitowoc Grove GMK4100L-1 Operating Manual

12.10.8
Locking
S
Removing the lock
Operating manual
GMK4100L-1

Locking/unlocking the lifting limit switch

If two lifting limit switches are installed, you must lock the lifting limit switch
not used in order to enable all crane operations.
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.
You must always release the locking before you place a lifting limit switch
weight around the hoist rope.
•
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.
•
(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.
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12.10 Rigging work on the main boom
Rigging work
12 - 125