Advanced Placement (AP), 03.02.2020 00:44 skrrtgod408
Two technicians are discussing retrofitting cfc-12 systems to hfc-134a standards. technician a says that the process doesn't take long but that mineral oil must be added before the retrofit is complete. technician b says that 50 ounces of cfc-12 should be replaced with 50 ounces of hfc-134a. who is correct?
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Two technicians are discussing retrofitting cfc-12 systems to hfc-134a standards. technician a says...
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