Why is maintaining breathers crucial for sealed motor enclosures?

Maintaining breathers in sealed motor enclosures is essential primarily because they allow moisture and gases to escape. Sealed enclosures are designed to protect the internal components of the motor from external contaminants such as dust and moisture, but they can also trap gases or vapor generated from the motor's operation and environmental changes. If these gases are not allowed to escape, pressure can build up within the enclosure, leading to potential damage or failure of the motor due to overheating or chemical reactions.

The function of breathers ensures that the internal environment of the motor remains stable by preventing the accumulation of moisture and harmful gases that can compromise its performance and longevity. This is particularly important in applications where motors are subject to varying temperatures and humidity levels, as moisture ingress can lead to corrosion and electrical failures over time. Thus, breathers play a critical role in maintaining the integrity and functionality of sealed motor enclosures.