Tennessee Wastewater Operator Practice Exam

What regular maintenance task is essential for ensuring proper operation of rotary screw blowers?

1. Monitoring electrical consumption

2. V belt inspection and re-tensioning

3. Replacing the diffuser

4. Evaluating thermal insulation

The correct answer is: V belt inspection and re-tensioning

Regular maintenance tasks for rotary screw blowers include V belt inspection and re-tensioning because these belts are critical for the blower's operation. The V belts transfer power from the motor to the blower, and if they are worn or not properly tensioned, it can lead to decreased efficiency, increased wear on components, and potential operational failures. Proper tension and condition of the belts ensure that the blower operates smoothly and at optimal performance levels. Monitoring electrical consumption, while important for overall system management, does not directly involve the mechanical integrity of the blower itself. Replacing the diffuser is a task associated with specific maintenance needs, usually based on performance issues or wear, and is not a routine maintenance task for rotary screw blowers. Evaluating thermal insulation pertains more to energy efficiency and losses rather than the direct operation and maintenance of the blower components. Therefore, the focus on V belt maintenance is crucial for the reliable and effective performance of rotary screw blowers.