What is a requirement that is not true for low pressure recycling and recovery equipment manufactured after November 15, 1993?

The requirement that is not true for low pressure recycling and recovery equipment manufactured after November 15, 1993, centers around the capability to handle more than one refrigerant. For equipment in this classification, there is no official requirement that mandates it must be capable of managing multiple refrigerants. Many low pressure recovery and recycling units are designed specifically for particular types of refrigerants rather than being versatile for a variety.

In contrast, the other aspects mentioned are indeed requirements for such equipment. Portability is important for ease of use in various settings, especially when working on different systems. A built-in vacuum pump is often necessary to facilitate effective recovery and recycling by achieving the required vacuum levels. Additionally, the capability to recover refrigerant at ambient temperatures ensures that the equipment can operate efficiently in real-world conditions without the need for external support systems.