Core (Universal)第 23 / 240 题
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?
a.70 percent
b.80 percent
c.90 percent
d.100 percent
解析
For small appliances, recovery equipment manufactured on or after November 15, 1993 must recover 90 percent of the refrigerant when the appliance's compressor is operating, or the system must reach 4 inches Hg vacuum. If the compressor is not operating, the requirement is 80 percent. Reaching 100 percent is not physically required by the rule.
法律依据: 40 CFR §82.156免费刷完整 240 道题库 — 无需注册。
同考点相关题目
- A parts counter clerk is asked to sell a 25-pound cylinder of R-410A to a walk-in customer. Under Section 608 sales restrictions, the clerk may sell it only to someone who:
- 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?
- What is 'system-dependent' (passive) recovery?
- 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: