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Post by joebill on Aug 8, 2021 14:48:34 GMT
Anybody's guess, but the JB weld or one of the others comes with aluminum powder fill. I do not recall which one has the aluminum.
None of them are as rigid as metal, so I think it would be a fair gamble against the cost of new coils. I think the bigger the patch, the more chance that the stretch and shrink would dislodge it.....Joe
On edit, a spray bottle with soap might just accidently find the leak.....Joe
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Post by sawmilljim on Aug 8, 2021 17:09:09 GMT
Anybody's guess, but the JB weld or one of the others comes with aluminum powder fill. I do not recall which one has the aluminum. None of them are as rigid as metal, so I think it would be a fair gamble against the cost of new coils. I think the bigger the patch, the more chance that the stretch and shrink would dislodge it.....Joe On edit, a spray bottle with soap might just accidently find the leak.....Joe Next thing I plan is pressure the unit up with argon as I have a tank on hand already. Once I find the leak I will report back. This piece of junk is less than two years old. It’s hot here and I’m old and slow. I got to hunt up where I hid my vacuum pump at some point in this operation.Back few years ago I had everything to do these jobs with but thought I was done working on such things. For sure at $30.00 a pound for the Freon I want it to hold this time. |
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Post by sawmilljim on Aug 8, 2021 18:00:25 GMT
Epoxy paste patches holes in aluminum. Maybe hold it underwater and watch for the bubbles  ...Joe Getting old missed this one! Would have to cut unit apart to hold any thing under water This thing is a three ton central heat pump. Only have one screw fitting on the whole thing Unit is about 4’x4’ x4’ with lots of better not get wet computer controls inside. |
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Post by sawmilljim on Aug 16, 2021 16:47:28 GMT
Update # 3
Got unit pressured up at the 125 psi mark I found the leak. The tube going into the compressor was the culprit. Compressor has a steel fitting that has to copper tube soldered into it.
Problem I see is there are several joints near by that don’t need the high heat used to melt some solder. Only solderI have is 50/50 on hand ? Was wondering if going over the joint with this as it takes less heat would be a good idea ? I looked at Stay bright 8 but sure hate buying a whole roll for one joint.
All suggestions appreciated
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Post by joebill on Aug 17, 2021 1:32:38 GMT
I know I got some sta-brite if I can find it, having just moved the shop. I can check tomorrow, and send you some if I can find it, OR.... K-mart used to have 2 oz tiny rolls of it....lemme know if you want me to seek ....Joe
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Post by sawmilljim on Aug 17, 2021 1:50:28 GMT
I know I got some sta-brite if I can find it, having just moved the shop. I can check tomorrow, and send you some if I can find it, OR.... K-mart used to have 2 oz tiny rolls of it....lemme know if you want me to seek ....Joe Thanks Joebill for the offer. I found a solder at Lowe’s that contains silver it doesn’t mention how much or what precent. I think I might give it a try. Tell me if you think my plan is dumb. Plan on low flow of argon threw system and trying to fill in the leak area without melting all the factory’s miss applied material out. In effect just fixing the leak. |
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...Joe