Automatic retraction of retractable sootblowers upon motor overload.
一旦电机超载，伸缩式吹灰器能自动伸缩缩回。
Featured with overheat alarm, phase sequence error and motor overload alarm;
具有超温警报，电源相序错误，马达过载等保护功能；
Automatic alarm of empty loader. With automatic motor overload protection device.
缺料自动报警响蜂鸣示告，马达过载自动保护装置。
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