The Failure of an Electric Engine Caused by the Seizure of the Porous Bearing

In the article, the investigative results of the elements of the electric engine, after failure, are described. A preliminary inspection showed that the engine breakdown was caused by the seizure of one of the porous bronze bearings mounted in the electric motor. The analysis of the results showed that the probable reason for the seizure was the presence of brown dust. The seizure process occurred only in bearing No. 2 and it was connected to its location within the structure of the air conditioner.