wear limit hole with straight (curved) tube if the drain hole in the slurry, the general should not be rebuilt to use, such as to repair the use of available external pressure over a small tail.
带有磨损极限孔的直(弯)管若孔中漏浆后,一般不再修复使用,如要修复使用,可用压力小的外接管尾部。
when the wear of the carbon brush reaches to the limit, the wear limit alarm device can timely remind the user of replacing the carbon brush, so the non-normal damage of the machine is avoided.