Core (Universal)Question 37 of 240
A technician finishes recovering R-410A but the recovery machine's low-loss fittings still hold a small amount of refrigerant. What is the correct practice?
a.Let the trapped refrigerant leak out overnight
b.Blow the hoses clear with compressed air
c.Crack the fittings open to atmosphere to relieve the pressure
d.Use low-loss fittings when disconnecting
Explanation
Low-loss fittings and self-sealing hoses are designed to trap the small amount of refrigerant left in hoses so it is not released to the atmosphere when connections are broken. Venting the fittings, blowing lines with air, or letting refrigerant leak out are all prohibited releases. Minimizing these small emissions is part of good recovery practice under Section 608.
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 →
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Related questions on this topic
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