The purpose of the tape deflector sheaves in a permanent install is to:

The correct answer centers on the role of tape deflector sheaves in a permanent installation setting. These sheaves are designed to guide or redirect the purchase tape, ensuring it follows the correct path as it rises. By bringing the purchase tape to a higher level in connection with the fairlead tube, the sheaves facilitate the correct alignment and functioning of the system involved in lifting or tensioning.

This design is crucial because if the tape is not properly aligned, it could lead to operational inefficiencies or even mechanical failure. The incorporation of sheaves is a common practice in many systems where tension and directionality of movement are vital for performance and safety.

Understanding the function of the tape deflector sheaves in this context helps ensure the successful operation of equipment that relies on this type of configuration. This knowledge can be applied to troubleshooting and maintenance practices, emphasizing the importance of proper tape management in mechanical systems.