Using recovery equipment made after November 15, 1993, an appliance using CFC-12 and holding less than 200 pounds must be evacuated to:

解析

CFC-12 (R-12) is a medium-pressure refrigerant under 40 CFR §82.152, along with R-134a and R-500. §82.156 Table 1 sets medium-pressure appliances under 200 pounds at 10 inches Hg with post-1993 recovery equipment, and 200 pounds or more at 15 inches Hg. (a) 15 is the 200-pound-plus figure; (b) 0 is the level for high-pressure appliances such as R-22 or R-410A under 200 pounds; (c) 4 is a pre-1993-equipment figure.