离心机转速变慢或时停时转等异常现象，其原因是机内炭刷磨损严重，接触不良所致。现介绍一种自制炭刷修复的方法。一、修配材料一号干电池（用过的也可）拆出的炭芯棒。二、方法1．拆卸切断电源，拆开离心机盖。旋开炭刷孔外螺帽，倒出需更换的带有弹簧的残余炭刷，用剪刀沿炭 Centrifugal speed is slowed down or stopped when the abnormal phenomenon, the reason is that the machine carbon brush wear is serious, due to poor contact. A self-made carbon brush repair method is introduced. First, the repair material on the 1st battery (used also can be) removed the carbon core rod. Second, method 1. Disconnect the power supply and disassemble the centrifuge cover. Unscrew the screw cap outside the carbon brush hole, pour out the residual carbon brush with the spring to be replaced, use scissors along the charcoal