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
6.2 The qualifications of maintenance staff.
§ To be capable to adequately carry out maintenance work of jib cranes maintenance staff must:
• know the laws in force related to accident prevention during work carried out on machines with motor
transmissions and be able to apply them.
• have read and understood chapter 3 “Safety and Accident Prevention”.
• be able to use and consult this document.
• know the functioning of the machine.
• recognise irregularities regarding functioning and when necessary take necessary measures to rectify
them.
§ Professional figures appointed and authorised to carry out maintenance on the crane are:
Operator of the jib crane.
• Typical maintenance activities:
• Verification of proper functioning of the jib crane. Cooperation with staff appointed to periodical
and/or extra maintenance work, after having informed them of any anomalies found in the
functioning.
• Cleaning and lubrication of the parts of the crane (hoist) which the operator is normally in contact
with (push-button panel, hook) and simple maintenance work which does not require intervention
at a height (e.g. lubrication of the thrust bearing of the hook).
• Technical knowledge required:
• knowledge of the functions and use of the jib crane
• knowledge of the lubricants utilised in the crane and in the hoist and of the dangers associated with
their use.
• Qualification required:
• suitability to the work in relation to the specific operative and environmental characteristics.
Mechanical maintenance officer
• Typical maintenance activities:
• mechanical regulation of the clearance of brakes and mechanisms
• test movements and mechanical regulation of the safety devices
• check mechanical clearance and wear of the components (chain, hook, etc.)
• replacement of components which can wear out (chain, hook, chain guide, pulleys) according to
this publication
• ordinary maintenance of mechanical units after substitution of parts with original spare parts
• Technical knowledge required:
• good knowledge of mechanical lifting systems and handling with a manual and motor driven
system
• good knowledge of safety devices used on the hoist (limit switches, brakes, overload switch,
etc.)
• basic knowledge of the moderately difficult techniques for electric checking and adjustment
(limit switch adjustment, replacement of fuses, motor connection, etc.)
• knowledge of the methods of measurement and testing to determine the actual state of the
conditions of the crane and of the hoist (tests of: brakes, chain and hook wear, anomalous
noise, etc.)
• logical trouble-shooting methods of non complex breakdowns and evaluation of the results
• ability to arrange the necessary measures to put the hoist back into working order
• ability to write a maintenance intervention report
• Qualification required:
•• • • Complete
training of an industrial mechanic having a specialisation in and experience of liftingsystem
maintenance or of industrial handling
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