I agree and am wondering if there is some sort of tag or stamping required on older compressors when converted. I’m pretty sure the fill and monitoring port connections are changed out when the conversion is made and that should signal any qualified technician, minimize mixing refrigerants or using the wrong gauges and charts.
My system was converted by a licensed technician and has no noticeable markings. It would be easy, neat and safe to “X-out” the 2 in the 12 and add “34”. A caution sticker on the radiator support might be appropriate.
At the end of the day, there should be zero risk to owner/operator/technician due to a conversion. Proper marking might trump originality.
No good if converted to 134
Posted by: "Rich Barber" <c300@xxxxxxx>
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