Bonfiglioli Acu 401 Manual
Rosella Bowlan
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Objective: Conflicting evidence exists to what extent manual material handling (MMH) causes lumbar disc disease, lack of evidence exist that this effect takes place especially at L5-S1 level, where the greatest moment occurs. The aim was to assess if lumbar vertebral body and disc changes are more common in people whose job involves significant MMH and, if so, to evaluate if lumbar vertebral body and disc changes are more prevalent in the lower part of the lumbar spine (L4-L5 and L5-S1).
Primary and secondary outcome measures: Neuroradiologists (blind to clinical assessment) evaluated the prevalence of intervertebral disc and vertebral body changes in standardised MRI examinations. History of personal and family musculoskeletal diseases and injuries, current and previous MMH at work and during leisure time were assessed by interview and self-administered questionnaire.
Results: Participants were classified according their occupational exposure to MMH. No association was found between MMH and vertebral body and intervertebral disc changes, whereas age over 45 years was consistently associated with more disc extension beyond the interspace changes, Pfirrmann changes, osteophytes and Modic changes: the association was statistically significant at the conventional 5% level.
Conclusions: Age, and not MMH, seems to primarily affect the presence of intervertebral disc changes; prospective studies are needed to better explore the relationship between MMH and the possible presence (and level) of lumbar vertebral body and/or disc changes.
Where the sales catalogue provides information regarding product design and capability, the installation manual is designed to provide information regarding the safe transportation, handling, installation, maintenance, repair, disassembly and disposal of gear units.
C series Helical gear units Bonfiglioli has been designing and developing innovative and reliable power transmission and control solutions for industry, mobile machinery and renewable energy applications since 1956. HEADQUARTERS Bonfiglioli Riduttori S.p.A. Via Giovanni XXIII, 7/A 40012 Lippo di Calderara di Reno Bologna (Italy)
SUMMARY Chapter Page 1.2.2 European harmonised ATEX standards 4 1.2.3 Levels of protection for the various categories of equipment 5 1.4.2 Selecting a gear unit with IEC motor fitting 7 1.4.3 Speed reducer with solid input shaft 8 1.4.5 Operating conditions for ATEX-specified equipment 8 2 C SERIES HELICAL IN-LINE UNITS 10 FOR POTENTIALLY EXPLOSIVE ENVIRONMENTS Revisions Refer to page 48 for the catalogue revision index. Visit www.bonfiglioli.com to search for catalogues with up-to-date revisions.
1.2 INTRODUCTION TO THE ATEX DIRECTIVES 1.2.1 EXPLOSIVE A TMOSPHERE Under the provisions of Directive 2014/34/EU, an explosive atmosphere is defined as a mixture: a. of flammable substances, in the form of gases, vapours, mists or dusts; c. under atmospheric conditions; d. in which, after ignition, the combustion spreads to the entire unburned mixture (it has to be noted that sometimes, mainly with dust, not always the whole quantity of the combustible material is consumed by the combustion). An atmosphere which may potentially be transformed into an explosive atmosphere due to...
1.2.5 DECLARATION OF CONFORMITY The Declaration of Conformity, is the document which attests to the conformity of the product to Directive 2014/34/EU. The validity of the Declaration is bound to observance of the instructions given in the User, Installation and Service Manual for safe use of the product throughout its service life. This can be downloaded from www.bonfiglioli.com where the manual is available in PDF format in a number of languages. The instructions regarding ambient conditions are of particular importance inasmuch as failure to observe them during operation of the product...
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