美国ＣＯＢＥ 3型血透机流量泵损坏 ,会引起流量减少或没有流量的故障 ,整机不能使用。流量泵常见的故障有轴承卡死、磁耦合传动环生锈、换向器极间污垢、电刷磨损等。前 3种情况通过清洁、除锈很容易修复 ,而电刷一旦磨损后 ,整个泵即告报废。一般直流电机的电刷用碳棒制成 , The failure of the US COBE 3 Hemodialysis Flow Pump will cause the flow to decrease or there will be no flow failure, and the entire machine cannot be used. The common faults of the flow pump are the stuck of the bearing, the rust of the magnetically coupled transmission ring, the dirt between the commutator poles, the wear of the brush and so on. The first three conditions are easily repaired by cleaning and derusting. Once the brushes are worn out, the entire pump will be scrapped. Brushes for general DC motors are made of carbon rods.