Type I — Small AppliancesCâu 98 / 240
A technician recharges a small window air conditioner after repair. Which practice helps ensure an accurate charge on a small sealed system?
a.Overcharge slightly to be safe, then vent the excess
b.Weigh in the manufacturer's specified charge using an accurate charging scale
c.Add refrigerant until the suction line feels cold to the hand
d.Charge vapor into the high side while the compressor runs
Giải thích
Small sealed appliances have a critical charge, so the most accurate method is to weigh in the exact amount specified by the manufacturer using a charging scale. Guessing by feel leads to over- or undercharging, and venting excess refrigerant is illegal. Liquid should never be charged into the suction (low) side of an operating compressor.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- While servicing a dehumidifier, a technician accidentally releases a small amount of refrigerant into the room. Which statement reflects the Section 608 venting prohibition?
- A technician is recovering from a small appliance using passive (system-dependent) equipment. To meet the required level, what must be achieved when the compressor is not operating?
- Which EPA technician certification allows a person to service and dispose of small appliances?
- A vending machine repair company sends technicians to recover refrigerant from beverage coolers in the field. These sealed factory-charged coolers hold about 2 pounds of R-134a. Under Section 608 they are treated as:
- A technician connects recovery equipment to both the high and low sides of a small appliance during recovery. What is the main advantage of accessing both sides?
- Which appliance would NOT be recovered under the small-appliance rules?
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