Charging 1234yf
When using my new 1234yf machine to recharge a system the machine asks do you want to charge with Low Side, High Side, or Both Low and High. I am unfamiliar with this question from my other A/C machine and wonder what is the best choice?? Is there a advantage to picking any of the three ?
Hope this helps you, buddy! Mr. G Jerry Truglia from TST youtu.be/l71H_J9fi5E
Pedro thanks for posting the answer...
Greetings and Blessings, Jerry✌🙏📈📊💻🔧🔩🚘🚗. I saw the video a few days ago and I told myself; "Here is the answer, to the question of our colleague". Thanks Jerry✌✌✌
Pedro thanks since I did not see the request. Have a great day
I always charge through the high side with liquid. The charge time is faster and I have yet to have a charge stop and require starting the vehicle. The most important step, depending on the machine, is the routine with the hoses at the end of the charge. If you have liquid charged, the volume of refrigerant leaving the storage vessel is known. There may still be liquid in the high side line. By…
Hello Bill, Robinair Tech Support states that OE recommendations should be followed on this if available. In a case where OE doesn't indicate, I suggest "both sides" to minimize time . . .
Bob I would agree with you that charging both does minimize the charge time but when it's cold... as it was when we were charging the vehicle the low side is my choice so there is less chance of causing a compressor problem.
Jerry - Less chance of causing a compressor problem? What type of problem are you referring to?
Bill- Compressor damage due to liquid aka hydrostatic lock.
"G", Thank you for your thoughts. Using a RRR machine (engine not running), hydro-lock should not occur. In that oh so rare instance where the system will not accept the entire charge, close the high side service valve, start the engine, and allow the compressor to pull in the remainder of the charge (like the pre-RRR days), and hydro-lock again should not be an issue . . . Thanks again, "G"
Bob your correct but most of the newer AC machines do not have a valve to close on the machine. The connect at the end of the hose can be used but if the tech forgets to turn it off it can become a problem. Where I live in NY most tech only perform AC service a few months of the year. From what I have seen over the years teaching AC they forget important steps on AC service. Another problem I…
"G", I agree RE the refrigerant in the AC service hoses. I stress the fact that the two hoses account for roughly four (4) ounces of the refrigerant charge and not 'compensating hoses" may impact AC operation.