Donati GRL Series, Manual

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USE AND MAINTENANCE MANUAL FOR
JIB CRANE - GRL SERIES
31
Contact settings:
1. Set the cam for contact SQ5A to limit the RIGHT rotation as needed.
2. Set the cam related to the emergency contact SQ5B immediately after the intervention of contact SQ5A.
3. Set the cam for contact SQ6A to limit the LEFT rotation as needed.
4. Set the cam related to the emergency contact SQ6B immediately after the intervention of contact SQ6A.
N.B.:
Intervention of the emergency limit switch contacts, blocks operation of the entire machine.
To reset after an emergency intervention, once the cause is identified, act on the limit switch,
by momentarily unblocking the involved contact cam.
Exit from the anomalous position with an opposite control with that of the intervention. Reset
the original position of contacts.
The customer or installer appointed by the customer must:
•
Install a line switch in the immediate vicinity of the crane to protect
against short circuits, indicating its function with a specific plate.
•
Make the connection of the crane structure to the earthing system, at the grip
points provided for this purpose (fig. 52).
fig. 51
fig. 52
fig. 53
4.3.6 Assembly of the trolley/hoist
Assembly of the trolley/hoist on the arm:
See the “User instructions” for the trolley/hoist (if supplied), attached to this
publication
In the case of a lifting unit equipped with electric traverse trolley, install the matching
parts - 1 -, for the trolley limit switches, between the blocks located on the arm, fixing
them with the relative screws (fig. 54).