How can you enhance the speed of refrigerant recovery from an appliance?

Enhancing the speed of refrigerant recovery from an appliance can be effectively achieved by installing additional access valves. This is because adding more access points allows for more efficient flow of the refrigerant out of the system. With multiple valves, the path for refrigerant evacuation is less restricted, leading to a quicker and smoother recovery process.

When multiple access valves are installed, technicians can connect recovery equipment to different parts of the system, thus reducing back pressure and allowing the refrigerant to flow more rapidly from the appliance. This practice not only speeds up the recovery process but also helps in ensuring that the system is completely evacuated of refrigerant.

The other choices—such as increasing ambient temperature, using smaller hoses, and reducing the flow rate—do not contribute to enhancing the speed of refrigerant recovery. For example, higher temperatures can increase pressure, but they do not specifically enhance recovery speed. Smaller hoses can actually restrict flow and slow down the process, while reducing the flow rate directly contradicts the goal of speeding up recovery. Thus, installing additional access valves stands out as the most effective method for achieving faster refrigerant recovery.