Vapor Recovery Installation and Repair Practice Exam 2026 – Complete Test Prep

The VP-1000 vacuum motor is designed to activate in response to the operational requirements of the vapor recovery system. When the nozzle is lifted and the dispenser is activated, it indicates that fuel is being dispensed. This action creates a need for the vapor recovery system to function effectively, ensuring that vapor displaced from the tank during the fuel dispensing process is properly managed. Activating the vacuum motor at this moment helps to create a negative pressure that draws the vapor back into the recovery system, preventing it from escaping into the atmosphere.

This functionality is critical for maintaining compliance with environmental regulations and for the overall efficiency of the fueling operation. It ensures that as fuel is being dispensed, any vapors that could contribute to air pollution are captured and redirected, instead of allowing them to vent freely.

In contrast, the other timing options do not ensure the immediate response necessary during fuel dispensing. For instance, automatic activation after a set time period could result in inefficiencies or potential safety issues, while activation based on tank fullness or during a fuel spill would not provide the necessary real-time response during normal dispensing operations, potentially allowing harmful vapors to escape into the environment at critical times.