By setting chills on the defect locations to isolate the molten iron in those areas from contact with the resin sand, the defects were successfully avoided.

在容易产生这种缺陷的部位设置冷铁，使该部位不与树脂砂接触，因而能避免上述缺陷产生。

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When such locations can't be avoided, a suitable drain pan must be installed under the heater.

如果实在找不到这种位置，那么必须在热水器的底部安装一个排水盘。

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