In the Healy Phase II EVR system, when will the VP-1000 motors run without authorized nozzles?

• A. For a cycle every 10 minutes
• B. When the V/L is out of range
• C. When the ambient temperature is below 40 degrees F
• D. When the pressure of the underground tanks exceeds 2 inches water column

Answer: (C)

In the Healy Phase II Enhanced Vapor Recovery (EVR) system, the VP-1000 motors are designed to operate under specific conditions to ensure effective vapor recovery during fueling operations. The correct scenario when these motors will run without authorized nozzles is when the ambient temperature is below 40 degrees Fahrenheit.

When the ambient temperature drops to 40°F or lower, the system’s sensors trigger the motors to operate in order to prevent fuel vapor from condensing and to maintain optimal vapor recovery performance. This ensures that the system remains functional and effective in preventing the release of harmful vapors into the atmosphere, which could occur due to temperature effects on the fuel’s characteristics.

In contrast, the other options pertain to different operational scenarios or conditions that do not directly influence the operation of the motors in this way. For example, if the vapor-to-liquid (V/L) ratio is out of range, it might indicate a performance issue but does not specifically trigger the motors to run without authorized nozzles. Similarly, concerns regarding the pressure of underground tanks exceeding a certain threshold or cycling every 10 minutes do not directly correlate to the operational logic behind the activation of the VP-1000 motors when temperatures are low. Thus, the situation of low ambient