Electrical Troubleshooting Quiz - March 1, 2016 NiroDesignr/iStock/Thinkstock

Electrical Troubleshooting Quiz - March 1, 2016

How to discover why your plant's drying oven is leaving scorch marks

The plant has a drying oven for a product line that is basically made from plastic sheets. The operations supervisor over the process has complained that the oven is leaving scorch marks on the plastic.

Upon inspection of products that have gone through the oven, you do see dark streaks that look like scorch marks. You point out to the supervisor that the plastic doesn’t look melted. You calibrated the controller so you know it’s working properly. You also know the heati

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