Core (Universal)Câu 24 / 240
What is 'system-dependent' (passive) recovery?
a.Recovery that uses a large self-contained machine with its own compressor
b.Recovery performed only by the manufacturer
c.Recovery that vents part of the charge to speed up the process
d.Recovery that relies on the appliance's own compressor or internal pressure to move refrigerant into a recovery container
Giải thích
System-dependent or passive recovery uses the appliance's own compressor or its internal pressure to push refrigerant into a recovery container, and it is generally limited to small appliances. Self-contained (active) recovery uses a separate machine with its own compressor. Passive recovery must never involve venting any part of the charge.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A technician is recovering R-134a from a high-pressure appliance manufactured after November 15, 1993, that normally holds less than 200 pounds. To what level must the system be evacuated using recovery equipment?
- A technician is disposing of a low-pressure chiller manufactured after November 15, 1993. Which evacuation level generally applies to low-pressure appliances during recovery?
- A technician recovers refrigerant from a household window air conditioner (a small appliance) whose compressor still runs. Recovery equipment made after November 15, 1993 must remove at least what percentage of the charge?
- The EPA program that reviews and lists acceptable substitute refrigerants for specific end uses is called:
- A wholesaler offers a technician a low-GWP refrigerant such as R-1234yf. This refrigerant is an example of:
- A recovery cylinder is being filled with recovered R-404A. To leave room for liquid expansion, the cylinder must never be filled beyond what percent of its capacity?
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