Effects of two ergonomic improvements in brazing coils of air-handler units

H S Loo, Paul Heng Ping Yeow

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6 Citations (Scopus)


The research aims to address the physically loading task and quality and productivity problems in the brazing of coils of air-handler units. Eight operators participated in two intervention studies conducted in a factory in Malaysia to compare the status quo brazing with (1) the use of a new twin-brazing torch that replaced the single-brazing gun and (2) brazing in a sitting position. The outcome measures are related to quality, productivity, monetary costs, body postures and symptoms. After baseline, Interventions I and II were applied for 3 months respectively. The results show a 58.9 quality improvement, 140 productivity increase and 113 times ROI. There was also a reduction in poor work postures e.g. in the raising of the arms and shoulders; bending, twisting and extending of the neck; and bending of left and right wrists, and the back. This research can be replicated in other factories that share similar processes.
Original languageEnglish
Pages (from-to)383 - 391
Number of pages9
JournalApplied Ergonomics
Issue numberNovember 2015
Publication statusPublished - 2015

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