用化学药剂进行清洗时，请仔细确认清洗管线是否正常工作。另外，请注意不要将药液混入生产过滤水中。
When cleaning in chemical medicament, please examine whether the clean pipe line operates normally. In addition, be careful not to mix medicament solution into production filter water.
清洗：检查或更换磨损的阀门阀瓣，断开控制管线，采用钝工具和锤打阀盖凸耳从阀体上旋下阀盖。
To CLEAN: Inspect or replace worn valve disc, disconnect control pipe and unscrew bonnet from valve body using blunt tool and hammer on bonnet lugs.
配浆前要认真清洗循环管线和配浆池。
Before making mud, clean all the circulation pipe-line and mud pits.
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