When a working compressor is run during passive recovery, where does it move most of the refrigerant?
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
When a working compressor is run during passive recovery, where does it move most of the refrigerant?
- Into the evaporator, where it stays trapped
- Out through the process stub to the air
- Back into the compressor oil
- To the high side, where it can be capturedCorrect answer
Why “To the high side, where it can be captured” is correct
A running compressor draws refrigerant from the low side and discharges it into the condenser on the high side. A passive device connected there can capture it, which is why running an operative compressor improves recovery.
Source: EPA: Test Topics
Why the other answers are wrong
- Into the evaporator, where it stays trapped — The compressor pulls refrigerant out of the low side and discharges it to the high side.
- Out through the process stub to the air — A properly connected device captures it; nothing should be released.
- Back into the compressor oil — Running the compressor drives refrigerant out of the oil, not into it.
Practice more of this
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