There could be several reasons why an electric dryer makes excessive noise during the first few minutes of operation but then stops after a short period. Here are a few possible explanations:
Loose objects: Check if there are any loose objects, such as buttons, coins, or small items, in the drum or around the dryer's interior. These items may cause noise as they move around during the initial part of the drying cycle. Once they settle or are thrown out of the drum, the noise may subside.
Belt or pulley issues: Electric dryers use a belt and pulley system to rotate the drum. If the belt is loose, worn, or damaged, it can cause noise during startup but may eventually settle into place. Similarly, if the pulley that maintains tension on the belt is misaligned or damaged, it can create noise initially. However, as the dryer continues to run, the components may adjust or stabilize, reducing the noise.
Drum rollers or glides: Electric dryers have drum rollers or glides that support and facilitate the drum's rotation. Over time, these components can wear out, become misaligned, or accumulate debris, leading to noise during operation. Initially, the noise may be more noticeable, but as the dryer runs and the components warm up, they may expand or reposition, reducing the noise.
Motor issues: A malfunctioning motor or motor mount can cause excessive noise during startup. As the motor warms up or reaches its normal operating speed, the noise may decrease or stop altogether. If the motor continues to make noise even after the initial period, it might require professional attention.
It's worth noting that excessive or persistent noise from an electric dryer should not be ignored, as it could indicate a potential problem that may require repairs or maintenance. If the noise persists or worsens over time, it is advisable to have a professional technician inspect and diagnose the issue to ensure safe and efficient dryer operation.