In the Healy EVR Phase II system, when do the VP-1000 pumps run at full speed?

In the Healy EVR Phase II system, the VP-1000 pumps are designed to operate at full speed when nozzles on both sides are picked up and authorized. This configuration is essential for maximizing vapor recovery efficiency during a refueling event.

When both nozzles are in use, the system senses increased vapor displacement and responds appropriately to protect the integrity of the environmental standards set for vapor recovery. Operating the pumps at full speed under these conditions helps ensure that any vapors generated during the refueling process are effectively captured and returned to the storage tank rather than released into the atmosphere.

Additionally, this full-speed operation helps to mitigate the risk of excess pressure buildup in the system, which could lead to potential vapor leakage or safety hazards. Thus, having both nozzles picked up and authorized indicates a higher demand for vapor recovery, prompting the pumps to achieve maximal efficiency during this operation.