切换到手动模式，旁通阀保持关闭；
微电脑自动控制电动排渣阀，根据杂质含量可任意设置过滤周期和排渣时间，全自动操作，同时还设置了备用的手动切换功能。
The filtration cycle and slag discharge time of dumping dregs valve is controlled by microcomputer automatically according to impurity content, and it has reserve manual switching function.
在每次测量前需要手动标定X - Y记录仪的坐标以及切换测试项目间的油路，测试曲线绘制完成后也需要手动计算电液伺服阀的各项性能参数。
Before the test, the coordinates of the X-Y recorder are demarcated and the shifts of the test oil circuit are done manually. The parameters of the characteristics are also computed manually.
在每次测量前需要手动标定X - Y记录仪的坐标以及切换测试项目间的油路，测试曲线绘制完成后也需要手动计算电液伺服阀的各项性能参数。
Before the test, the coordinates of the X-Y recorder are demarcated and the shifts of the test oil circuit are done manually. The parameters of the characteristics are also computed manually.
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