Multi-turn potentiometer replacement standard

Multi-turn potentiometer is often used for a long time, there will be common failures, must be replaced with a new multi-turn potentiometer, do you know how to correctly select the right potentiometer to replace the original potentiometer? In general, the replacement of multi-turn potentiometers should comply with the following standards:

① The volume and appearance design of multi-turn potentiometer should be similar to the original potentiometer;

② Resistance value can be changed by 20% to 30%. For example, the original potentiometer is 475kQ, and 515k,0 can be used instead;

③ The power of the replacement multi-turn potentiometer is generally not lower than the original potentiometer, if the potentiometer is used in the data signal control loop (such as sound, tone potentiometer), the power of the potentiometer can not be considered;

④ If the length of the shaft and the hole in the shaft need to solve the production and processing (such as filing or sawing, etc.), it should be carried out before installation, and do not install the post-processing process on the entire equipment to prevent damage to the parts.