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Old 08-20-2015, 11:25 AM   #57
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Update: The fan motor seized up this summer. Turns out the motor I bought had open end caps that allowed water into the motor when it rained. It wasn't an issue in the California desert, but the Ohio rains trashed the motor. Just be sure the motor end caps have no holes in them.

I put the original motor (glad I kept it!) back in for now and it's still working fine!
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Old 08-28-2015, 11:07 PM   #58
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First. I want to thank you for the information on your Armstrong a/c rebuild I hope it is still running strong. I am using your info as a guide for the restoration of my own 69 rebuild and I was wondering if you might know how I determine which filter dryer I should use to replace my original? The old one is so rusted I can't make out any part numbers. Thanks again. Carl.
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Old 08-29-2015, 11:55 AM   #59
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I'll jump in here just like I know something. Sizing on filters driers is pretty much, "The bigger, the better." As long as it's for R-22, it fits in the space, you watch the flow direction, and the tubing sizes match up, you're good. Do a double check to verify that it's good for 12-15K BTUH or about 1.5 tons. That should give you plenty.

Johnstone Supply 206 catalog - pages 1142 & 1143
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Old 08-29-2015, 07:12 PM   #60
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Yep, drboyd is right. Generally speaking, the tubing size will limit the filter capacity. A 1/4" tube can only allow so much flow. The large the tube diameter, the more potential capacity.
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Old 08-29-2015, 07:47 PM   #61
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Yep, drboyd is right. Generally speaking, the tubing size will limit the filter capacity. A 1/4" tube can only allow so much flow. The large the tube diameter, the more potential capacity.
Hey, that's one in a row for me! Woo-hoo!
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Old 08-29-2015, 09:05 PM   #62
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I'll jump in here just like I know something. Sizing on filters driers is pretty much, "The bigger, the better." As long as it's for R-22, it fits in the space, you watch the flow direction, and the tubing sizes match up, you're good. Do a double check to verify that it's good for 12-15K BTUH or about 1.5 tons. That should give you plenty.

Johnstone Supply 206 catalog - pages 1142 & 1143
Thanks guys. that's what I needed to know. Does anyone know if I can still have my Armstrong A/C filled with R-22? and if I have to use something else do I have to modify my original compressor?
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Old 08-29-2015, 10:31 PM   #63
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You can still buy R-22.

R-22 refrigerant
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Old 08-30-2015, 08:44 PM   #64
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What you need to do is to find a guy that lives near you that will refill your AC unit. The one in that link? 30 lbs? I think that's way more than you will need, isn't it?

Does the Armstrong have the fittings for doing the fill, or is it sealed like the new ones are?
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Old 08-30-2015, 09:53 PM   #65
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What models and years where Armstrong's installed in A/S ?
I have a 1974 31' sovereign Land yacht. I'm so surprised the a/c still works. I don't see any outside labels on it, and the service manual doesn't ID it either.
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Old 08-30-2015, 10:38 PM   #66
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What models and years where Armstrong's installed in A/S ?
I have a 1974 31' sovereign Land yacht. I'm so surprised the a/c still works. I don't see any outside labels on it, and the service manual doesn't ID it either.
Hi I am not sure about the 74 models having the Armstrong A/C ,but I have seen ads in the classifieds for Armstrong a/c shroulds one for a 1971 and another for a 1972-73.
On my Armstrong there is a model plate located on the outside of the unit under the shroud.
There is also a label located on the refrigerator vent that runs up the interior of the trailer,and it mentions the Armstrong unit. One more thing . post #52 lists two references that I found very helpful with my model. I hope this helps some.
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Old 08-30-2015, 10:59 PM   #67
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No tags on the exterior, but I have been told mine is an Armstrong too ('74 Sov)
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Old 08-31-2015, 01:42 PM   #68
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Ok I just removed the interior trim and there's a manufacturer plate and it is an Armstrong. Thanks
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Old 08-31-2015, 04:44 PM   #69
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If I remember correctly, the Armstrong unit holds about 2.5 lbs of R-22. It's on the data plate. You can buy R-22 on eBay and in various other places. Generally you have to certify that you are going to resell it or have a certified tech install it. I have not heard anything about the Refrigerant Cops busting anyone.
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Old 08-31-2015, 10:42 PM   #70
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If I remember correctly, the Armstrong unit holds about 2.5 lbs of R-22. It's on the data plate. You can buy R-22 on eBay and in various other places. Generally you have to certify that you are going to resell it or have a certified tech install it. I have not heard anything about the Refrigerant Cops busting anyone.
You can buy all the R-22 you need on Craigslist. Generally, the certificate you need to show has Andrew Jackson's picture on it.
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