User`s manual
44
Authorized workers in charge of servicing hoists are:
THE
OPERATOR
EMPLOYED
IN
THE
USE
OF
THE
MACHINE
TYPICAL MAINTENANCE ACTIVITIES:
•
verifying the correct functioning of the machine. Co-operation with members of the staff in charge of periodical
and/or extraordinary maintenance, upon timely notice given by the same operator in the event he/she detects an
anomaly.
•
cleaning and lubricating the machine’s part he/she is usually in contact with (push button control pendant and hook)
and maintenance operations which do not require to work aloft (e.g. lubrication of the hook’s thrust block).
•
Required technical knowledge:
•
knowledge of the use and functions of the machine
•
knowledge of lubricants employed on the machine and of the dangers connected to them
•
Required qualification:
fitness for work with regard to specific operating and environmental characteristics.
MECHANICAL
MAINTENANCE
MAN
• Typical maintenance activities:
• adjustment of backlash of brakes and mechanisms
• verification of the execution of movements and adjustment of safety devices
• checking backlashes and wear and tear degree of components (wire rope, drum, pulleys)
• replacement of components subject to wear (wire rope, rope guide, pulleys) according to this manual
•
ordinary maintenance of mechanic units and replacement of worn parts with original spares
•
Required technical knowledge:
•
good knowledge of mechanical hoisting and handling motor systems
•
good knowledge of safety devices fitted on the machine (limit switches, brakes, load limiter, etc.)
•
basic knowledge of simple electric control and adjustment technique
(adjustment of limit switches, replacement of fuses, connection of motors, etc.)
•
knowledge of measuring and testing methods to establish the actual conditions of the machine
(verification of: brakes, degree of wear and tear of wire rope and hook, abnormal noisiness, etc.)
•
methods of
logical research of non complex breakdowns and evaluation of the results
•
ability to organize the measures fit for bringing the machine back to its function and performance
•
ability to draw up a maintenance operation report
•
Required qualification:
• Full training as an industrial engineer complete with specialization and experience in servicing industrial hoisting
and handling systems.
ELECTRICAL
MAINTENANCE
MAN
• Typical maintenance activities:
•
servicing electric equipment starting from functional diagrams
•
verification of the execution of movements and electric adjustment of safety devices
•
verification of wear and tear of electric components (contacts of electric equipment)
•
repair of electric units and replacement of worn parts with original spares
•
Required technical knowledge:
•
good knowledge of electric equipment and installations
•
good knowledge of electric components and safety devices fitted on the machine (limit switches, brakes,
load limiter, etc.)
•
basic knowledge of simple electric control and adjustment technique (replacement according to