Before an appliance is opened for major service or disposal, the technician must first:

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Multiple choice — select the best answer

AAdd fresh refrigerant
BRecover the refrigerant
CVent the system slowly
DPressurize it with oxygen

✓ Correct answer: B. Recover the refrigerant Refrigerant must be recovered into an approved external container before the appliance is opened or disposed of, because venting refrigerant to the atmosphere is prohibited.

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Before an appliance is opened for major service or disposal, the technician must first:

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