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09-15-2005, 03:54 PM #1
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R-410a THV in R-22 System mix up, Trane
Any possible damage to new compressor due to TXV mixup? Here's what happened. Two tranes installed. One a 16xli 2 ton which utilizes R-401a the other a 12xr 2 ton which is R-22. The installer got the TXV's mixed up and installed them on the wrong units. On start up the tech couldn't figure out what was wrong (had to call the boss). Boss figured it out right away. Now when the 12 shuts off the compressor makes this loud scraping screech. Almost sounds like fan blades raking something to a sudden stop but it's not the fan, it's coming from the compressor. Is that normal for the the 12XR when it turns off?
[Edited by baffin789 on 09-15-2005 at 04:06 PM]
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09-15-2005, 05:09 PM #2
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I can't see the mix up causing the problem you describe.
the txv will cause pressure problems, but it sounds like you guys caught this before any lengthy run times.If you try to fail, and succeed.
Which have you done ?
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09-15-2005, 05:14 PM #3
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Might have washed out alot of the oil, because of flooding back to the compressor.
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09-19-2005, 12:53 AM #4
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A wild guess.
The 410a TXV flooded the 22 compressor with refrigerant, washing out the lubricant from the bearings. Compressor failure may occur later.
It's not right, have them fix it. Now. On their dime not on yours.
“I am for doing good to the poor, but...I think the best way of doing good to the poor, is not making them easy in poverty, but leading or driving them out of it. I observed...that the more public provisions were made for the poor, the less they provided for themselves, and of course became poorer. And, on the contrary, the less was done for them, the more they did for themselves, and became richer.”
― Benjamin Franklin
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