Manitowoc Grove GMK 4100L-1, Operating Manual

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Rigging work
12.10 Rigging work on the main boom
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GMK4100L-1
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Attaching the lifting limit switch weight
•
Attach the lifting limit switch weight ( 1 ).
These lifting limit switches must not be
blocked;
à
Removing the lock
, p. 12 - 125.
If two hoist ropes are reeved, you must attach
a lifting limit switch weight to each of the two
lifting limit switches.
Placing a lifting limit switch weight around
the hoist rope
•
( A ) – Pull the safety pin ( 1 ) out and fold the
two halves of the weight apart.
•
( B ) – Place the two halves of the weight
around the last rope line leading upwards.
•
Pull the safety pin ( 1 ) out and fold the two
halves of the weight back together.
•
Make sure the safety pin locks into place and
the two halves of the weight are securely
attached to each other.
If two hoist ropes are reeved, you must also
place a lifting limit switch weight around the
second hoist rope.
H
If you place the lifting limit switch weight around the last rope line leading
upwards, less rope will run through the lifting limit switch weight, especially
if there is a high number of reevings per lifting operation. This rope line will
even be at a standstill if the number of rope lines is even.
This allows you to reduce the wear of the hoist rope and lifting limit switch
weight and prevent unintentional deactivation procedures that may be
caused by the running hoist rope lifting the lifting limit switch weight.