If any of return sludge pumps is in off mode, it will be regarded as standby unit. If fault is found on dutypump, the standby pump will be automatically change over.
没有启动的污泥回流泵作为备用泵，如主泵发生故障，备用泵自动切入。
2
It is ideal for high or low level alarm and pump control duty in Marine tanks in the most arduous and demanding of environments.
此开关是海运过程中多数危险环境中，低高级报警和泵控制功能理想的选择。
3
Heavy duty precision cast 304 stainless steel pump block exports and to ensure the perfect combination of electric pumps.