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  1. Replies
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    I used the last tiny bit of r401a and then r22...

    I used the last tiny bit of r401a and then r22 and backed the screw way out on the TXV and it is acceptable now. I think I will get a replacement TXV in the future but for the time being the...
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    Just took another look and the expansion valve is...

    Just took another look and the expansion valve is an Alco HF 1/2 FC.

    Looks like a 1/2 ton expansion valve and there is a place to adjust it on the bottom. Which way should I turn it and how...
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    Alright so evidently I don't have any R401a... ...

    Alright so evidently I don't have any R401a... My boss told me about the 30 lb cylinder but it's empty. =(

    Charged with R22 again and I watched as it seemed to be working at first, but then the...
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    Just out of curiosity... How would I have...

    Just out of curiosity... How would I have problems with not enough refrigerant in the evap when the suction line is showing such a high pressure? I guess this should be pretty simple but it's just...
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    The old compressor was from the 70s (I guess it...

    The old compressor was from the 70s (I guess it was older than the 20 years I originally stated), and there is no information I was able to find on it as the nameplate and such was corroded off from...
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    Help with choosing cooling solution.

    I usually do phase change but I think I'm going to go with air cooling so I don't have to worry constantly about condensation and crap.

    I am looking to buy the best HS I can with a 50 dollar...
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    As I charged I slowly watched liquid show up in...

    As I charged I slowly watched liquid show up in the glass and then eventually instead of liquid slowly spewing through it was mostly liquid and a few bubbles and then all liquid no bubbles.
    ...
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    Since this is 230v I'm assuming it's a larger air...

    Since this is 230v I'm assuming it's a larger air conditioner. I'd also assume that being a larger air conditioner it's not R134a and since a very large portion of air conditioners are either R134a...
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    Only had one spare access valve when I first...

    Only had one spare access valve when I first tried charging it, so I don't know high side pressure but since then I've added one. When I charged it the liquid line was fully liquid (no bubbles in...
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    Display case cooler help

    Hey guys, I'm helping my boss out with a problem with his waitress station/display case cooler (it cools lemonade, milk, iced tea, etc. and has glass sliding doors on it) but have run into some...
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    Holy thread resurrection Batman!

    Holy thread resurrection Batman!
  12. Thread: autocascades!

    by Derek
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    I've got everything for my autocascade except 20'...

    I've got everything for my autocascade except 20' of 1/2" tubing for the heat exchangers.

    I had a poor one a while back but have since upgraded the compressor, just haven't had...
  13. Thread: Brass For Evap

    by Derek
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    You wouldn't be happy w/ -40 for long (I bet). ...

    You wouldn't be happy w/ -40 for long (I bet). Idle temps between brass/copper would probably be pretty close but I bet there'd be quite a bit higher load temps.
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    Did you even read my post? First of all, the...

    Did you even read my post? First of all, the condenser and compressor from the a/c unit would make a louder but otherwise fine single stage. Again, IT WOULD WORK FINE for a processor and more than...
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    I'd wager that the compressor you found is 1/2...

    I'd wager that the compressor you found is 1/2 h.p. or right around there. Calculations between btu/hp and such online aren't exactly accurate but more of a guideline.

    The compressor you have...
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    Gotcha. I forgot about the controller.

    Gotcha. I forgot about the controller.
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    VapoLS - Compressor - Condenser = Evaporator +...

    VapoLS - Compressor - Condenser = Evaporator + Case :D

    Add an accumulator, a desuperheater and a new tune that's a pretty expensive evaporator and case compared to a fresh (custom) build isn't it?
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    That should work, but why not just drop in a...

    That should work, but why not just drop in a silent fan for the second one?
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    I just placed an order myself. Been waiting a...

    I just placed an order myself. Been waiting a couple of days for it. =)
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    BINGO! Evaporated refrigerant is still very,...

    BINGO!

    Evaporated refrigerant is still very, very cold and will cause frost.
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    I love charts! Give me more!

    I love charts! Give me more!
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    I couldn't agree more. Obviously this isn't a...

    I couldn't agree more. Obviously this isn't a forum specifically for general phase change stuff but knowledge is knowledge -- it certainly doesn't hurt.

    Anyways, I've noticed the same thing as...
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    Wouldn't the stainless steel braiding just...

    Wouldn't the stainless steel braiding just capture more moisture/air under the insulation? What exactly is the benefit of having that costly stuff over regular suction line?
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    This is what I use... Excellent condenser even...

    This is what I use... Excellent condenser even though they're steel btw -...
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    I didn't see R290 on there but here's a link to a...

    I didn't see R290 on there but here's a link to a website with P/T on it: http://www.glacierbay.com/ptchartpropane.asp

    Good find though, just downloaded.
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