Type I — Small AppliancesQuestion 105 of 240
A technician finishes recovering a refrigerator and disconnects the equipment. To verify that recovery met the requirement using the vacuum method, what should the gauge read?
a.25 mm Hg absolute
b.Positive pressure of 4 psig
c.10 inches Hg vacuum
d.At least 4 inches Hg vacuum
Explanation
The vacuum-based alternative for small appliances is met when the system reaches at least 4 inches of mercury vacuum. A positive pressure reading means refrigerant remains and recovery is incomplete. The deeper 10 inches Hg and 25 mm Hg absolute values apply to Type II and Type III appliances, not small appliances.
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
- A technician recovering from a small appliance notices the recovery cylinder is not pulling below atmospheric pressure. Which factor most likely prevents reaching the 4 inches Hg vacuum alternative?
- A landlord asks a Type I technician to simply cut the lines and toss out several old mini-fridges. What is the technician's correct response?
- Which of these is a defining physical feature of a small appliance that distinguishes it from field-installed equipment?
- A technician wants to recover refrigerant faster from a small appliance in cold weather when system pressure is very low. Which safe method raises pressure to aid recovery?
- When a small appliance's compressor is operable, why does the rule require a higher recovery level (90%) than when it is inoperable (80%)?
- A recycling center employee, who is not an HVAC technician, is the last person to handle scrap refrigerators before shredding. What must the facility ensure?
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