Why does recovering from only one side work poorly on a small appliance with a dead compressor?
Recovery techniques · EPA 608 Type I. The correct answer, and the reasoning behind it.
Identifying refrigerants, access valves, passive recovery and solderless fittings.
The question
Why does recovering from only one side work poorly on a small appliance with a dead compressor?
- The regulation requires two gauge readings for the records
- Two valves let air in to push the refrigerant out
- Refrigerant stays trapped on the side not tappedCorrect answer
- Two valves double the vacuum the device can reach
Why “Refrigerant stays trapped on the side not tapped” is correct
A capillary tube is a tight restriction, and a stopped compressor does not pass refrigerant freely. With access on one side only, refrigerant on the other side leaves slowly or not at all, so both sides are tapped.
Source: EPA: Test Topics
Why the other answers are wrong
- The regulation requires two gauge readings for the records — No record of two readings is required; the reason is how refrigerant moves.
- Two valves let air in to push the refrigerant out — Letting air in would contaminate the refrigerant and is never the goal.
- Two valves double the vacuum the device can reach — The number of valves does not change the vacuum a device can pull.
Practice more of this
More EPA 608 Type I practice questions, or see every EPA 608 practice test.
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