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Old 07-14-2010, 11:01 PM   #1
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1964 26' Overlander
Bentonville , Arkansas
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1964 Overlander with Bay Breeze revisited

Okay, thanks to all the help and past posts I have brought my Armstrong back to life. I have installed a new capicitor and AO Smith fan motor. I have even fiberglassed my shroud to make it new.

But I have a problem - when the AC cools the trailer to the desired temp the compressor shuts off as it should. But when the trailer warms, the compressor does not restart. If I switch the fan off and back on the compressor starts and runs as should.

I have also noticed that I can not switch from high speed to low speed with the compressor on. When I do the compressor stops and will not restart until I shut the whole unit down for 5 minutes and then it will start.

Did I cross a wire in my motor replacement? Any ideas? The AC blows nice and cold, it dropped the temp in my trailer from over 85 to 72 in less than an hour and the temp was still falling, what more could I ask for from a 46 year old unit.

Thanks,
Robert
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Old 07-14-2010, 11:55 PM   #2
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Nowhere , Washington
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Grinder75, as far as the compressor not coming back on after it reaches the set temperature, I don't have an answer, but in the directions for my old Armstrong, it said that if you switched from high speed to low speed without moving the switch quickly, you would probably have to turn it off and let it sit for about 5 minutes.
Norm
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Old 07-15-2010, 01:19 AM   #3
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Okay, thanks to all the help and past posts I have brought my Armstrong back to life. I have installed a new capicitor and AO Smith fan motor. I have even fiberglassed my shroud to make it new.

But I have a problem - when the AC cools the trailer to the desired temp the compressor shuts off as it should. But when the trailer warms, the compressor does not restart. If I switch the fan off and back on the compressor starts and runs as should.

I have also noticed that I can not switch from high speed to low speed with the compressor on. When I do the compressor stops and will not restart until I shut the whole unit down for 5 minutes and then it will start.

Did I cross a wire in my motor replacement? Any ideas? The AC blows nice and cold, it dropped the temp in my trailer from over 85 to 72 in less than an hour and the temp was still falling, what more could I ask for from a 46 year old unit.

Thanks,
Robert
I would highly suspect that the start/run relay has severely burned contacts, that don't always make connection.

That's very common with the old TAC-110 AC units.

Andy
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Old 07-15-2010, 08:52 AM   #4
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1964 26' Overlander
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Can I clean it, is there a replacement, How do I fix it?

Thanks,
Robert
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Old 07-15-2010, 08:53 AM   #5
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Can I clean it, is there a replacement, How do I fix it?

Thanks,
Robert
Replacements are available from many sources.

Andy
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Old 07-15-2010, 09:01 AM   #6
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1964 26' Overlander
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What does the relay look like? Is it in the box with the capicitors and all the wires?

Looks like another trip up the ladder!

Where can I get a replacement? Grainger?

Robert
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Old 07-15-2010, 09:05 AM   #7
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What does the relay look like? Is it in the box with the capicitors and all the wires?

Looks like another trip up the ladder!

Where can I get a replacement? Grainger?

Robert
That relay is a common part.

It's in the box with the other parts.

Grainger, and AC parts suppliers have them.

Take the old one out and use it as a sample.

CAUTION: Make a drawing of "EXACTLY" how the wires are connected, before you remove the relay.

Andy
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Old 07-15-2010, 09:13 AM   #8
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1964 26' Overlander
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Thanks,

i will give it a shot this week. I was so excited to get that old unit purring, but I should of known I had a few more trips up the ladder.

And we are talking about the Compressor Relay? I think I remember seeing that on my old wiring diagram that was inside the electrical box on the unit.

Robert
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