EPA Section 608 Universal Certification ExamType I (Small Appliances)Medium
A technician is using a self-contained recovery device on a small appliance. Which of the following statements about the use of a self-contained recovery device is most accurate?
- AIt is typically slower than a system-dependent recovery device.
- BIt requires the appliance's compressor to be operating to push refrigerant into the recovery cylinder.
- CIt removes refrigerant by continuously drawing it out of the appliance and into a recovery cylinder.
- DIt can only be used for HFC refrigerants, not CFCs or HCFCs.
Show answer & explanationAnswer & explanation
Correct answer: C. It removes refrigerant by continuously drawing it out of the appliance and into a recovery cylinder.
Self-contained recovery devices have their own compressor and condenser to actively draw refrigerant from the system and store it in a recovery cylinder. This makes them independent of the appliance's compressor and generally faster than passive methods.
Why the other options are wrong
- A. Self-contained devices are generally faster because they have their own power and compressor.
- B. This describes a system-dependent recovery device, not a self-contained one.
- D. Self-contained devices can recover all types of refrigerants, provided they are compatible with the specific refrigerant being recovered.
Self-Contained Recovery Device
An active refrigerant recovery unit with its own compressor and condenser, capable of evacuating refrigerant independently from the appliance's compressor.
- Uses its own power and compressor.
- Draws refrigerant into a recovery cylinder.
- Faster than system-dependent devices.
- Can recover from systems with non-operating compressors.
Memory trick: Self-contained is 'self-sufficient' – it has its own power to pull the gas, no need to stall or fuss.