Recovery & RecyclingQuestion 231 of 240
Using recovery equipment made after November 15, 1993, an HCFC-22 appliance containing 200 pounds or more of refrigerant must be evacuated to:
a.4 inches Hg vacuum
b.0 inches Hg vacuum
c.10 inches Hg vacuum
d.25 mm Hg absolute
Explanation
With post-1993 equipment, an HCFC-22 appliance of 200 pounds or more must be evacuated to 10 inches of mercury vacuum, while one under 200 pounds needs only 0 in Hg. The 25 mm Hg absolute level is for low-pressure appliances. Matching refrigerant, size, and equipment age to the number is a common exam task.
Law Reference: 40 CFR §82.156This topic, taught in full in the EPA Section 608 Certification guide. EPA 608 Universal Study Guide (2026) — Core + Type I/II/III, with the 2027 A2L update — PDF + EPUB, $14.99 · 14-day refund →
Practice all 240 questions free — no signup required.
Own the complete EPA Section 608 Certification guide — PDF + EPUB, $14.99 →
Related questions on this topic
- The two common DOT specifications for refillable refrigerant recovery cylinders are:
- A technician recovers refrigerant that will be returned to the same owner's system after cleaning. This refrigerant may be:
- Before 2017, technicians had to certify to EPA that they had acquired certified recovery equipment. What is required today?
- Why is identifying the refrigerant before recovery especially important today?
- Which sequence correctly lists the three processes from least to most thorough?
- Storing a filled recovery cylinder in a hot vehicle trunk in summer is dangerous mainly because:
Last reviewed: · editorial process
PrepPass team · Verified against EPA Section 608 Technician Certification Exam · How we review