6.5 Automatic control of drainage and dewatering system

6.5.1 When the water level of drainage sump rises to the 1st upper limit,the main pump shall be started automatically. If the water level rises to the 2nd upper limit,the standby pump shall be started automatically,and the alarm shall be sent out. When wa ......（本文共 1207 字 ）     [阅读本文] >>