Check that the valve is installed properly and the feed valve does not leak.

检查阀是否安装正确；进料阀是否泄漏。

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Alarm, feed valve or pump starter switch actuates just before the burner switch cuts the firing.

警报器，进水阀或泵启动装置开关在燃烧器关闭燃烧之前启动。

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Feed valve is float-operated and simply constructed. Can be easily cleaned if fouled by dirt in the water supply.

进水阀是靠浮子工作的，结构简单。如果被供水污垢淤塞，则能够很容易的进行清洗。

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