Type I — Small AppliancesQuestion 98 of 240
A technician recharges a small window air conditioner after repair. Which practice helps ensure an accurate charge on a small sealed system?
a.Weigh in the manufacturer's specified charge using an accurate charging scale
b.Add refrigerant until the suction line feels cold to the hand
c.Overcharge slightly to be safe, then vent the excess
d.Charge vapor into the high side while the compressor runs
Explanation
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.
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Related questions on this topic
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