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。
If any of return sludge pumps is in off mode, it will be regarded as standby unit. If fault is found on duty pump, the standby pump will be automatically change over.
其泵的应用范围很广，从简单的工业辅助泵到高压冷凝回流泵以及电厂的热泵。
The pumps are used in a wide range of applications ranging from simple industrial booster pumps to high pressure condensate return and heater drain pumps in power plants.
应该提供传动装置循环泵(p—02603)和回流泵(动力- 02604)剖面图纸。
Cross section drawings of Media Circulating Pump (P-02603) and Backwash Pump (P-02604) shall be provided.
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