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is the time spent fine tuning the equipment after it has been restarted. It is characterized by frequent stoppages, jams, quality rejects and other problems. It is generally caused by variability in the clean-up and set-up or by variability in the product or its components.
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is the process of actually converting the equipment. This may be achieved by adjusting the equipment to correspond to the next product or by changing non-adjustable "change parts" to accommodate the product. Typically it will be a combination of both.
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manufacturers retooling for new models. Reducing changeover times became a popular way to reduce waste in Lean manufacturing after
Taiichi Ohno and Shingo Shigeo popularized the SMED (
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of converting a line or machine from running one product to another. Changeover times can last from a few minutes to as much as several weeks in the case of
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are sometimes used interchangeably however this usage is incorrect. Set-up is only one component of changeover. Example: A
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glass bottles one day, perform a changeover on the line and then run 750 ml plastic bottles the next day.
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label) to major, requiring complete disassembly of the equipment, cleaning and
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of the line components in the case of an injectable pharmaceutical product.
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Process of converting a line or machine from running one product to another
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160:) method in the, now famous, Toyota Production System (TPS). The terms
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from the line. It may range from minor, if only the
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187:Changeover can be divided into the 3 ups:
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