Ergonomics considerations in the design and use of single disc floor cleaning machines

This study investigated ergonomics issues connected with the use of single- disc floor cleaning machines (buffers/polishers). Methods included intervie w/questionnaire surveys of users and other groups (maintenance personnel, p urchasing managers, manufacturer representatives), along with video analysi s. A notable proportion of users (56%) reported discomfort from machine use , mostly musculoskeletal in origin. Main locations were hand (39%), shoulde r (19%), wrist (7%), lower back (7%) and arm (6%). Deficiencies were identi fied with the design and configuration of the handle/operating-switch. Prob lems were also found arising from the trailing power cable, along with manu al handling implications due to machine size and weight. It is concluded th ere is scope to improve on current designs. (C) 1999 Elsevier Science Ltd. All rights reserved.