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Post by honestcharlie56 on Dec 5, 2021 18:44:18 GMT
Gentlemen,
Good afternoon! I already have another thread for the 1950 Frigidaire, so in order to maintain some order I've started this thread for the "47". When I got the fridge it had already suffered a burnout and needed a compressor. I found a Bautzen compressor for the 1950 and would like to know, before I buy one, can I do the same with the 47. The 47 originally came with Dichlorotetraflourothane, feel free to correct my spelling if need be. I've done many R-12 to R-152A conversions and have enjoyed great results, both automotive and a few refrigerators. I have not done a conversion from Dichlorotetraflourothane to 152a. Is this possible? Thank yall in advance and enjoy the rest of your weekend.
Nick
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Post by turbokinetic on Dec 6, 2021 3:27:44 GMT
Gentlemen, Good afternoon! I already have another thread for the 1950 Frigidaire, so in order to maintain some order I've started this thread for the "47". When I got the fridge it had already suffered a burnout and needed a compressor. I found a Bautzen compressor for the 1950 and would like to know, before I buy one, can I do the same with the 47. The 47 originally came with Dichlorotetraflourothane, feel free to correct my spelling if need be. I've done many R-12 to R-152A conversions and have enjoyed great results, both automotive and a few refrigerators. I have not done a conversion from Dichlorotetraflourothane to 152a. Is this possible? Thank yall in advance and enjoy the rest of your weekend. Nick Hi Nick. The Dichlorotetraflourothane is the long name for Freon-114 or R114. It operates at a lower pressure than R12 or R152A. You will need to use an R12 specification compressor of roughly the same horsepower. You'll also need to remove the existing capillary tube and restrictor from the heat exchanger line set. Then, you'll need to install a correct length capillary tube for the compressor and refrigerant you are installing. I have found out that going from R12 to R152A works well with original cap tubes; however you can further dial it in if you replace the cap tube. Use the R12 cap tube charts for the system; and go 15% longer to account for the static-cooled condenser, and the R152A. That will get you going like new! Be sure to get all the funky old oil out of the system when you have the lines open. Also, don't use an R134A compressor with POE oil unless you are absolutely sure you can get all traces of the old oil out; or it will likely not last as long as you would like. The mineral / AB oil R12 compressors don't have this problem to nearly the same degree; but they still need a clean system. EDIT: Be sure the Bautzen compressor is designed for use without a body fan. Most modern compressors require a fan blowing across the compressor housing to cool it. The original Meter-Miser compressor has large metal fins on the outside to help it dissipate heat. The specification for the new one will state whether or not it's intended to be static cooled, or fan cooled. Be sure, since it will die if it needs a fan and has none. And another EDIT: I looked up Bautzen Compressor and it is a Chinese knock-off of "something" which I can't tell. Their site shows many hallmarks of poor quality such as grammatical errors and nonsense. They also are related to "Everwell" which has sold me MULTIPLE completely useless start relays. They were essentially fake products, which did not have any actual silver alloy contact points. The copper-on-copper construction welded the contacts together repeatedly on two applications. One was a capacitor start motor, and the capacitor exploded. The second one was not so lucky, and it burned out the compressor. That one cost me a lot of money because I had to stand behind the job and replace the compressor for my customer. I would not trust that compressor any further than I could throw it. Look for Embraco or Danfoss if you plan to keep the fridge and want it to last.  |
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Post by honestcharlie56 on Dec 12, 2021 17:09:50 GMT
Turbokinetic,
As always thanks for the reply. Like you, I had never heard of bautzen. Since I already have it I think I'll give it a shot with the expectation that it wont last. Both of these fridges I'm working on arent exactly in great or perfect shape. I will go ahead and order a Danfoss for the fridge in this thread, the 47'. I'll do some research into the cap sizing and whatever I find I'll report back so others can have a reference on here.
Thanks
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Post by turbokinetic on Dec 13, 2021 17:01:07 GMT
Turbokinetic, As always thanks for the reply. Like you, I had never heard of bautzen. Since I already have it I think I'll give it a shot with the expectation that it wont last. Both of these fridges I'm working on arent exactly in great or perfect shape. I will go ahead and order a Danfoss for the fridge in this thread, the 47'. I'll do some research into the cap sizing and whatever I find I'll report back so others can have a reference on here. Thanks Oh yeah - if you already have the compressor, by all means use it! Hopefully I am terribly mistaken and it lasts for decades! EDIT: Here is now NOT to do it... https://youtu.be/4Rl6cbh2_rU |
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Post by honestcharlie56 on Dec 16, 2021 1:53:36 GMT
If nothing else I'll be able to report its performance back to the board. That being said, even if I have good luck, that could be a 1 in 10 or 1 in 100 success based on your previous experience with their quality. Whether it does or doesn't provide an acceptable service life, I'll accept the responsibility for my actions. I sure wish the Meter Miser was able to be put back into service, but hey, no biggie. I do want to take the opportunity to thank you for the videos. The first fridge I "saved" was a friends avocado green Frigidaire from the 70's that had been sitting outside at a deer lease for years. We did an oil change, flush (ish), vac and fill with 152a. Your videos helped that fridge come back and its full of beer two houses down working great. That fridge in your video deserves better than the hack job it received previously. That is exactly what I don't want to accomplish and why I'm on this board. I'm very interested in quality work but have a lot to learn.
Ok so I have my marching orders.
1) Flush compressor as best as I can and refill with POE for the 152a charge.
2) Calculate the appropriate capillary length with an additional 15%.
3) Cut evaporator lines in order to properly flush the lines and evaporator.
4) Review my new gasket install because I know it isn't perfect.
Thanks again!
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Post by turbokinetic on Dec 16, 2021 11:07:13 GMT
If nothing else I'll be able to report its performance back to the board. That being said, even if I have good luck, that could be a 1 in 10 or 1 in 100 success based on your previous experience with their quality. Whether it does or doesn't provide an acceptable service life, I'll accept the responsibility for my actions. I sure wish the Meter Miser was able to be put back into service, but hey, no biggie. I do want to take the opportunity to thank you for the videos. The first fridge I "saved" was a friends avocado green Frigidaire from the 70's that had been sitting outside at a deer lease for years. We did an oil change, flush (ish), vac and fill with 152a. Your videos helped that fridge come back and its full of beer two houses down working great. That fridge in your video deserves better than the hack job it received previously. That is exactly what I don't want to accomplish and why I'm on this board. I'm very interested in quality work but have a lot to learn. Ok so I have my marching orders. 1) Flush compressor as best as I can and refill with POE for the 152a charge. 2) Calculate the appropriate capillary length with an additional 15%. 3) Cut evaporator lines in order to properly flush the lines and evaporator. 4) Review my new gasket install because I know it isn't perfect. Thanks again! Sounds like you're on the right track! However, I would definitely not use POE oil for this. I would use alkylbenzene (AB) oil. The POE oil tends to be very easy to chemically degrade when any old residues are left in the system; whereas AB is not. Also, AB is less susceptible to dilution by HFC refrigerants, so it will provide better lubrication. Also, I realize I shared the same video with you on your other thread! Sorry about the repetition. Hopefully it helps others who read one thread but might overlook the other! |
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