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Post by turbokinetic on Dec 6, 2019 13:43:53 GMT
Yes, this is really cool to see even though I hate to see a grounded out motor! I’m sure my poor D2 will have to have similar surgery done at some point. Am I seeing things or is there corrosion on the metal parts of the compressor that I see? I feel the same! Glad to see the repair process moving forward; although it's a shame that the unit was damaged in the first place. I don't see any sign of corrosion, in my opinion. All the iron and steel look perfect. The copper line has some "grey sludge" on it but nothing that looks like corrosion, to my untrained eyes LOL! Sincerely, David
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Post by coldspaces on Dec 7, 2019 1:30:20 GMT
Yes it is very clean and corrosion free considering its so2 system. Its all setting in plastic bags as I await a price quote. First response was for pics to be sent. They asked, "Does it really have 32 slots in a motor that small. That would be a difficult rewind." I had to open the bag the stator is in and take pics, its still stinky.
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Post by coldspaces on Dec 14, 2019 2:56:12 GMT
Well I got one quote for a rewind of $625.00. That was more than I hoped for and could have tried to get a lower quote. But I have always wanted to rewind a motor. I am sure I should not have made my first one a hermetic that will get welded shut but its too late now lol. I have already been sourcing the tools and materials to do a rewind my self. Its a lot of work for a newbie, just trying to lay it all out on paper is a challenge. Every drawing I will post was made about 6 times each till I was sure they were right and fairly neat. I doid't just take pics either I have labeled some to help identify how things should go back. I have sent hours trying to find the materials without buying large quantities, hours documenting how the windings are in the stator, hours trying to buy the epoxy dip in less than 5 gallons. The epoxy dip has been a big challenge now and before when I searched. I now have found several possibilities on the dip and think I will be able to solve that puzzle piece also. I found this to help me chose materials www.pleo.com/ulsystem/hermetic.htmBetter wish me good luck, I may need it!! Drawing to show what stator slots the start and run windings are in. More to show whats in which slot and other notes.
Diagrams to show whats in the slots and how the windings interconnect.
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Post by coldspaces on Dec 14, 2019 3:00:33 GMT
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Post by elec573 on Dec 14, 2019 3:56:01 GMT
Nice work! How do the glass leads look? Was wondering if there is an accumulation of the black crude in it ? Thanks for the pictures.
Didn’t realize you were going to try and rewind the stater . Its been many years sense I’ve done one , simply because machines can do it so much faster and was cheaper at that time . I glad you’re doing it just keep the winding tight and take your time. Keep us posted it’s an interesting one to follow, we’ll all your work is !
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Post by ckfan on Dec 14, 2019 4:57:34 GMT
This is so cool. I’m so impressed with your work on this.
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Post by coldspaces on Dec 14, 2019 5:28:18 GMT
Nice work! How do the glass leads look? Was wondering if there is an accumulation of the black crude in it ? Thanks for the pictures. Didn’t realize you were going to try and rewind the stater . Its been many years sense I’ve done one , simply because machines can do it so much faster and was cheaper at that time . I glad you’re doing it just keep the winding tight and take your time. Keep us posted it’s an interesting one to follow, we’ll all your work is ! Thanks, the glass terminals look good, the inside of this one is pretty clean for an so2 system. I didn't start out planning to rewind it myself. But it's a $20 frig I got free and don't even need lol. Might as well learn if I am spending that much money. I bought a coil form and winder is on the way. I now see the original coils are pretty square. The form I have will make them oval. I may end up doing it by hand. Thanks for the advice!
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Post by coldspaces on Dec 14, 2019 5:30:13 GMT
This is so cool. I’m so impressed with your work on this. Thanks, I hope I get it right. Its sure been a learning experience.
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Post by coldspaces on Dec 15, 2019 3:26:17 GMT
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Post by turbokinetic on Dec 15, 2019 11:04:38 GMT
Looking very good! That stator stand looks like it will really make the job a lot easier, for sure.
I remember when tearing down that CA which was burned out; it had a very peculiar "forest fire" smell to the winding. Does this one have a peculiar smell?
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Post by coldspaces on Dec 15, 2019 14:34:02 GMT
No they didn't really smell all that burnt, just got greeted by so2 every time I opened the bag it was in. All the insulation materials are rotted. It seems strange that the system was so clean. Guess the cotton and paper are just too old.
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Post by turbokinetic on Dec 15, 2019 15:02:06 GMT
No they didn't really smell all that burnt, just got greeted by so2 every time I opened the bag it was in. All the insulation materials are rotted. It seems strange that the system was so clean. Guess the cotton and paper are just too old. It's hard to understand the exact dynamics at play. I'm confident that sustained high temperatures play a part in aggravating a chemical reaction where the SO2 extracts water from the chemical structure of the cotton, leading to deterioration. So yeah, it's just old and tired and has had enough abuse for one lifetime LOL!
The Westinghouse (from Travis) which I tore down also had rotten insulation. It wasn't charred-looking but you could rub the cotton off the winding by touching it.
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Post by ckfan on Dec 15, 2019 17:38:16 GMT
Looking at all of your work gives me hope for these great machines. I love your determination Gill. That was a lot of work and there is so much work ahead for you. You really are doing some groundbreaking work for this community though.
It also makes me think of just how charred my poor DR1s insulation is. It is currently making some ice as my drink fridge in the kitchen. I guess I’m at the point now to where I’ll say, use it but don’t abuse it. Use it as it was intended but be nice to it, it’s old!
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Post by coldspaces on Dec 15, 2019 20:37:02 GMT
Yea all these old cotton insulated machines could go anytime it seems. I will have enough materials left to rewind at least one more DR-1 expect maybe the epoxy.
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Post by elec573 on Dec 16, 2019 3:44:25 GMT
Did you happen to figure out the cause of death for this dr . Sense you have it open and the winding out . Was it in your opinion just decaying of the cotton windings ? Or do you think it was a combination of deterioration of the cotton insulation plus the so2 combined.
If this is the case all drs are going to fail at some point . For the same reason .
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