Clean the cushion of the ash-dischargedoor. If it is worn out, replace it by anew one.
注意清灰口门子上的垫子，如有破损，应及时更换。
2
Close the door distribution discharge valve and, if cut-off valve is opened, pumping water to the piston from the pipeline until the pump output.
关闭分配阀卸料门，如有截止阀则打开，泵送清水至活塞从输送管输出端泵出为止。
3
The third arm (17) is provided with an electrode pin (22) and a wiring (23) for detecting discharge current between the third arm (17) and the door (3).