What is NOT typically a cause of weak suction in a central vacuum system?

A central vacuum system's suction performance can be influenced by various factors, and understanding these can help in troubleshooting issues. The role of the motor is crucial; it generates the suction needed to effectively remove dirt and debris. If the motor is functioning properly, it should provide adequate suction. Therefore, the condition of the motor itself is not commonly a cause of weak suction.

On the other hand, a full canister, a dirty filter, or even the operator’s technique can lead to reduced suction. A full canister can block airflow, reducing efficiency, while a dirty filter can impede the passage of air, resulting in weaker suction. Additionally, the operator’s actions, such as the way the vacuum is maneuvered or maintained, can affect the system's performance. Thus, focusing on the motor highlights that its proper functioning is essential for maintaining strong suction in a central vacuum system.