If the system pressure is 0 psig after installing a fitting for recovery, what is the next step?

When the system pressure reads 0 psig after installing a fitting for recovery, it's essential to understand the implications of that pressure reading. A pressure of 0 psig indicates that there is no refrigerant present in the system. The best course of action in this scenario is to move forward with refrigerant recovery if any residual refrigerant is present, even though the reading suggests otherwise.

Choosing to assert that refrigerant recovery is not required overlooks the need to ensure that any remaining refrigerant is properly managed. Generally speaking, even trace amounts of refrigerant can be present, and federal regulations mandate the recovery of refrigerants from any system before servicing.

The other options suggest actions like utilizing recovery equipment to create vacuum or pressurizing the system; however, these steps are unnecessary if the pressure is already at 0 psig and do not adhere to standard procedures that prioritize environmental safety and regulatory compliance.

Overall, it is crucial to conduct a recovery process to ensure that no refrigerant is released into the atmosphere, which is why proper handling and management of the system are vital, despite the initial pressure reading.