User`s manual

AUTHORIZED PERSONNEL FOR OPERATIONS IN THE EVENT OF BREAKDOWN

Personnel authorized to operate in the majority of breakdowns, or where not otherwise indicated, are maintenance men who are

experienced or qualified through a specific training on mechanical and electrical parts. Where indicated, operations must be

performed by specialized, or specifically trained, staff members or by technical staff sent by the manufacturer.

BREAKDOWN

The machine does not work.

If, when control push buttons are pressed, the machine does not work:

• Do not insist pressing push buttons

• Check main or auxiliary fuses are not loosened or blown

• Check limit switches, as some contacts may have remained open

• It is possible that a conductor inside the push button control panel's cable is interrupted due to crushing caused by

transportation or assembly

• The brake is jammed for lack of power supply; check the brake’s functioning separately from the motor’s

• If disk brakes vibrate excessively it means that:

a) they are fed with two phases only

b) feeding voltage is too low

c) the air gap between magnetic parts is too large.

• The push button control panel is faulty

• The low voltage transformer is blown (check the output voltage)

• If the crane has a tendency to start and then stop, it is possible that one of the bridge motors has two phases which are

inverted with respect to the other motor

• If the bridge tends to go out of square or one of the wheels to get over the rails:

a) one of the motors is not working properly

b) one of the two brakes is jammed

c) one of the driving wheels does not touch the raceway (verify tolerances on raceways).

• The hoist can not lift the nominal load, has trouble getting started, does not resume the suspended load:

a) the power supply line is under-dimensioned, voltage drops by over 8%.

b) voltage is to be checked between the phases at the starting of the hoisting motor

c) the hoisting motor is not connected properly (check the terminal board).

Repair

Operating modes in the event of emergency:

• If one of the hoisting brakes has a faulty servo brake:

a) manually loosen the braking action and let the load down very slowly and with the greatest caution

b) if the system has two working speeds, let the load down using the active one

• If one of the bridge sliding motors is stalled:

a) in the event either the servo brake or the feeder are faulty, loosen both brakes and use the crane with the

greatest caution

b) if one of the motors is blown, remove the faulty motor reducer by slipping it off the hollow shaft and

provisionally use the crane, with great caution, at the lowest available speed and, if possible, with the load

nearer to the efficient motor.

In both cases, have the machine fully repaired as soon as possible.

In the event of breakage regarding which no qualified hands are available, do not hesitate to contact us for

assistance.