JIB CRANES WITH AN ARTICULATED ARM MANUALLY ROTATED

DONATI SOLLEVAMENTI S.r.l. - Via Roma, 55 - 21020 Daverio (VA) - Tel. 0332 942611 - Fax. 0332 948597
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Electrical technicians.
• Typical maintenance activities:
• electrical adjustment of safety devices, calibrations, and tests (annual load test)
• normal maintenance work after substitution of complex and/or critical electrical componentry in
order to maintain safety levels (lifting limit switch, motors, B.T. switchboard)
• repair of electrical units after extra maintenance work has been carried out (repair of the
electric motors with partial replacement, replacement of limit switches with variation in position,
etc.)
• Technical knowledge required:
• very good knowledge of electrical systems and installations on industrial lifting and handling
equipment • specific knowledge of the electrical componentry and of the safety devices used in
the hoist (limit switches, brakes, overload switch, etc.)
• experience of the techniques used in electrical checks and adjustments (ability to alter the
original diagrams to make improvements on: limit switches, push-button panel, control
consoles, cables, etc.)
• knowledge of the techniques for mechanical checks and adjustments (wear testing, test
performance of mechanical components, adjustment of mechanical stops, test noise level,
etc.)
• specific competence in the methods of measurement and testing to determine the actual state
of the conditions of the hoist (tests of the efficiency and reliability of the electrical equipment) •
specific competence in trouble-shooting methods in all types of breakdown and evaluation of
the results on the command and control electrical equipment of lifting machines
• capacity to manage the measures necessary to put the jib crane and the hoist back into action
and performance
• ability to write a maintenance intervention report
• Qualification required:
• Complete training of an industrial electrical technician having a specialisation in and specific
experience of electrical apparatus of lifting and handling systems.
Electromechanical technician:
He is a highly specialised and specifically trained operator, whose professional
profile combines and synthesizes not only the abilities and knowledge typical
of the electrical technician, but also those of the mechanical technician.
Special recommendations regarding maintenance:
1.If performed correctly maintenance work guarantees the safety of jib crane operators and
reduces downtime
to a minimum after a breakdown.
2.Repairs carried out opportunely prevent further deterioration of the crane and its components.
3.Use original spare parts and products.
4.To prepare the crane for maintenance work the following rules must be followed:
•The staff appointed to do the ordinary or extraordinary maintenance work must have read
and understood well all the instructions contained in this chapter and in chapter 3.
•Extraordinary maintenance work must only be carried out by authorised, qualified staff,
trained for the job.
Maintenance work must be carried out, when possible, while the crane is not connected
to the power supply and in safe conditions, using suitable tools and adequate personal
protection devices, in accordance with the regulations in force, and affixing a sign with
the warning: “MAINTENANCE WORK IN PROGRESS”.
For problems which may come about or to order spare parts contact the DONATI
SOLLEVAMENTI S.r.l. Technical Assistance Service
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