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Post by turbokinetic on Sept 9, 2023 20:03:37 GMT
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Post by 508gm1 on Sept 10, 2023 16:38:51 GMT
I cannot thank you enough for the modification & testing you have done for me. You are a true gentleman.
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Post by turbokinetic on Sept 10, 2023 19:08:23 GMT
I cannot thank you enough for the modification & testing you have done for me. You are a true gentleman. Glad to have the opportunity. Hopefully getting it home goes smoothly! |
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Post by 508gm1 on Sept 24, 2023 15:12:39 GMT
Some minor progress this morning. I removed the lineset from the cabinet due to a kink in the suction line from someone previous. I will be replacing the lines. The ends that looks all mangled, believe it or not that was not me, that is how they came out. I suspect someone at some point attempted to remove the compressor skid without removing any of the line clips. I have the receiver removed as well. I found the rest of the oil, it was holding about 300ml. I have a funny feeling the fridge, when it was running, was on un-level ground hastening the lack of oil return. When I re-install everything I will be giving the receiver an ever so slight slope in favor of the dip tube exit valve. David, the fittings are all SAE but I am unsure if they are 37 (JIC) or 45 degrees. Can you advise a way to check? I most definitely do not want to use the wrong flare tool. It is strange, all the nuts are of the same forged type except the one on the receiver valve. Cheers, Brendan  Attachments:
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Post by turbokinetic on Sept 24, 2023 15:23:42 GMT
Some minor progress this morning. I removed the lineset from the cabinet due to a kink in the suction line from someone previous. I will be replacing the lines. The ends that looks all mangled, believe it or not that was not me, that is how they came out. I suspect someone at some point attempted to remove the compressor skid without removing any of the line clips. I have the receiver removed as well. I found the rest of the oil, it was holding about 300ml. I have a funny feeling the fridge, when it was running, was on un-level ground hastening the lack of oil return. When I re-install everything I will be giving the receiver an ever so slight slope in favor of the dip tube exit valve. David, the fittings are all SAE but I am unsure if they are 37 (JIC) or 45 degrees. Can you advise a way to check? I most definitely do not want to use the wrong flare tool. It is strange, all the nuts are of the same forged type except the one on the receiver valve. Cheers, Brendan Hi Brendan. Those are 45° SAE flare fittings. Some of them may be nonstandard. They may have a flare fitting outer diameter (threaded part) traditionally used with 1/2" tubing but the flare nut is only drilled for a 3/8 tube. Another common one is a 3/8" flare nut but drilled for 5/16" tubing. Just be sure to salvage the original nuts if you think they are special types. Not as familiar with Mayflower as I am with others and they may not have done that. Frigidaire is "famous" for it. As for the oil, that's likely a result of running with very little SO2 in the unit and therefore nothing to carry the oil through the system. It could have run for weeks or months non-cooling after the charge was lost down to a critical level. By the way, your evaporator is still under test. It has been in operation since the post here showing that it was hooked up. Will share some follow up pictures later! That is common and very irritating when people bend and damage the lines. Often have to make new ones on these old units. Sincerely, David |
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Post by turbokinetic on Sept 24, 2023 19:37:48 GMT
Here is the video of the continuing evaporator test:
https://youtu.be/gc4KwvSeCvo
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Post by 508gm1 on Sept 24, 2023 19:52:02 GMT
That's great to see David. It seems to have grown substantially in size! I cannot overstate how much I appreciate you performing the modification for me.
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Post by turbokinetic on Sept 24, 2023 20:55:21 GMT
That's great to see David. It seems to have grown substantially in size! I cannot overstate how much I appreciate you performing the modification for me. LOL 😂 Yep it has grown substantially in size! We've had a lot of humidity here this week! Hopefully it makes it back to Canada safely. |
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Post by 508gm1 on Oct 2, 2023 15:20:41 GMT
I found myself out in the garage this morning tinkering on this machine again. I attempted to pressure test the compressor starting at 25psi with a plan to increase from there while turning the flywheel checking for leaks. Well, I had significant seepage around the shaft at low pressure. I will see if the machine shop at work can help me out or it looks like David is being sent another piece  I removed the cover at the bottom of the crank case. Each bolt had significant trapped SO2 behind them; what a way to start the morning. I am wondering if there was some minor seepage over time. See the 2 spots with built up black crud. Do I make an assumption this may have been an area where moisture has ingressed in?  |
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Post by turbokinetic on Oct 2, 2023 19:13:50 GMT
I found myself out in the garage this morning tinkering on this machine again. I attempted to pressure test the compressor starting at 25psi with a plan to increase from there while turning the flywheel checking for leaks. Well, I had significant seepage around the shaft at low pressure. I will see if the machine shop at work can help me out or it looks like David is being sent another piece I removed the cover at the bottom of the crank case. Each bolt had significant trapped SO2 behind them; what a way to start the morning. I am wondering if there was some minor seepage over time. See the 2 spots with built up black crud. Do I make an assumption this may have been an area where moisture has ingressed in? View AttachmentThat's par for the course, with the bolts trapping SO2. They always do that. Have torn down compressors which were in storage for decades, and had SO2 come out from under the bolts. The black residue is just plain old sludge. It builds up in the oil over time in these systems. |
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Post by turbokinetic on Oct 2, 2023 19:23:43 GMT
Forgot to share this short video clip! Hope the evaporator makes it back to you safely!
https://youtu.be/tHDER3nRU_g
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Post by 508gm1 on Oct 5, 2023 22:01:21 GMT
Thanks David, I received the evaporator yesterday. It made it back with no damage. Your test pressure held during the trip.
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Post by turbokinetic on Oct 6, 2023 3:15:11 GMT
Thanks David, I received the evaporator yesterday. It made it back with no damage. Your test pressure held during the trip. Very glad it made it safely! After sending it, I realized it had to go through Canadian customs inspection and I hoped that they didn't open it and misunderstand the pressure inside and do something unspeakable to it. |
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Post by 508gm1 on Nov 9, 2023 11:30:50 GMT
A little bit of progress. The compressor skid is cleaned up and painted. The compressor shaft seal will be looked at by a machinist at work. If he cannot find time David I will send it to you. Now, another issue. I removed the discharge valve assembly from the receiver today. It needs to be re-orientated to accommodate the addition of a filter drier. I was very surprised to see no dip tube on this. I can't understand how this would ever work properly if the liquid is not being drawn from the bottom of the receiver. The top portion of the receiver would be vapor. Thoughts before I add a dip tube to the valve assembly?
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Post by turbokinetic on Nov 9, 2023 14:20:31 GMT
A little bit of progress. The compressor skid is cleaned up and painted. The compressor shaft seal will be looked at by a machinist at work. If he cannot find time David I will send it to you. Now, another issue. I removed the discharge valve assembly from the receiver today. It needs to be re-orientated to accommodate the addition of a filter drier. I was very surprised to see no dip tube on this. I can't understand how this would ever work properly if the liquid is not being drawn from the bottom of the receiver. The top portion of the receiver would be vapor. Thoughts before I add a dip tube to the valve assembly? That is strange about the dip tube. Is there any chance that the dip tube is actually built into the receiver, such as a design where the threaded bushing welded into the receiver is actually long enough to act as a dip tube? You're right that it couldn't work without that. |
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