What happens if the fan compartment door of an appliance is left off the motor?

If the fan compartment door of an appliance is left off, it causes the motor to operate in an environment with less resistance to airflow. This change can lead to an increase in the current drawn by the motor. In such scenarios, because the motor is not properly contained within its designed airflow path, it can potentially run at a higher speed or compensate for the lack of environmental control, which requires more electrical energy. As a result, the current increases to maintain the performance of the appliance, taking into consideration that it may not function as optimally as designed.

In contrast, airflow would not decrease in this case; instead, it may actually increase since the compartment door is missing. The efficiency of the unit is likely to decline rather than improve, as the system is not operating under its intended conditions. Additionally, noise levels are more likely to increase than decrease since the absence of the fan compartment door allows more noise from the motor and moving air to escape freely. These considerations help clarify why the increase in current is the significant outcome when the fan compartment door is not in place.