混流泵5、泵运转时注意有无杂音及泵内是否有剧烈的磨擦和撞击声，如有就停车检查。When the pump isrunning， pls pay more attetion on the noise and friction and clashing noise， ifthere are strong noise， pls stop the pump to check.? ? 6、检查进、出水管路有
