INSTALLATION, USE AND MAINTENANCE
GBA-GBP-CBE-MBE SERIES
45
4.4 Commissioning
4.4.1 Preliminary operations - Adjustments and test runs
Before putting the jib crane into use, carry out the following
operations:
•
Check the suitability of the electrical system:
Check that the line voltage and frequency, shown on the respective motor plates, correspond to
those required for operation.
Check that the voltage value to the motors is within the limits of +/- 10% of the rated value.
Check for the presence and correct connection of the earth socket
•
Check the correct crane installation:
Make sure that there are no clear defects after installation of the crane
Check that all of the bolted connections are correctly tightened
Check the conditions of the trolley wheel track, which must be free from obstacles, roughness, dips
and foreign bodies.
Check the uniform arm P&T sensitivity, along its entire length
Check the arm rotation freedom, in relation to the absence of obstacles in all of the area where the
crane operates and check for any interferences.
Adjust the electric hoist lift limit switch (see the information in the related “User instructions”) in
order to allow the maximum stroke possible. The lower limit switch needs to be adjusted so that
the hook, in its lowest point, is 10 cm from the ground.
Check that the matching parts are present and working for tripping the traverse limit switches, if the
installation is with an electric trolley. Adjust them to prevent contact with the buffers.
Make sure there is no lubricant leakage.
Make sure that no noises, and/or anomalous vibrations and/or incorrect movements are detected
during the tests (sliding of the wheels or spontaneous movements of the trolley and/or arm, etc.).
•
Checking the operation of the correct rotation direction of the motors:
In the case of crane with electric hoist and trolley:
•
Activate the “right/left” direction buttons and check that the trolley movements occur as
indicated by the direction arrows located on the crane beam;
In the case of crane with electric hoist and push trolley:
•
For short sections activate the “lift/lower” buttons, being careful to operate first in one direction
(lower) and then in the other (lift) with two short pulses only necessary for verifying the correct
rotation direction, without making any limit switches trip.
•
First check the traverse movements, if electric, then check lifting and, in any
case, prevent the lifting limit switch from tripping.
•
If the motor rotation direction does not coincide with the pushbutton controls the
limit switches will not stop their movement and may cause malfunction
situations.
•
If the movement direction does not correspond with the pushbutton panel
indications, stop the movement and invert the connection of the two-line phases
of the connector block.
