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Thread: LG French door Refrigerator LFX31925 cap tube size

  1. 04-07-2021, 07:01 AM #1
    danm009
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    LG French door Refrigerator LFX31925 cap tube size

    G’day from Australia
    Would you guys know what size capillary tubes id need for an LG Refrigerator LFX31925?

    It has dual Evaps and I might replace both tubes
    This model is on R134a

    Thanks
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  2. 04-07-2021, 08:18 AM #2
    Restaurant mech
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    No I don't have information on that. It's probably 2 different size tubes as well.
    In a case like this I'd be pulling out my cap tube measuring tool.
    You don't squat with your spurs on.
    And you NEVER put the torches away before pressure testing.
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  4. 04-07-2021, 08:45 AM #3
    danm009
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    Quote Originally Posted by Restaurant mech View Post
    No I don't have information on that. It's probably 2 different size tubes as well.
    In a case like this I'd be pulling out my cap tube measuring tool.
    The thing is the fridge was on R600 but I’m retrofitting it to r134
    It’s a actually a different model here in Australia but that US model I can see looks exactly the same except for the input voltage .

    I’ve changed the compressor to a r134 1/4 Hp Danfoss but need to change the capillary sizes .
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  5. 04-07-2021, 08:47 AM #4
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    VTP99
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    Does it have a linear compressor ?
    Ohh I see now you already pulled that one.
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  6. 04-07-2021, 09:09 AM #5
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    R600a
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    Quote Originally Posted by Restaurant mech View Post
    No I don't have information on that. It's probably 2 different size tubes as well.
    In a case like this I'd be pulling out my cap tube measuring tool.
    I would be pulling out my running shoes.

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  7. 04-07-2021, 09:17 AM #6
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    VTP99
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    Yep world's worst refrigerator 👎🏻
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  9. 04-07-2021, 09:27 AM #7
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    R600a
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    I am interested in seeing how this works out. It sounds like a really interesting project although I would have stayed with r600a because it really is good stuff.

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  10. 04-07-2021, 09:30 AM #8
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    R600a
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    Did you bypass the electronics that control the compressor? If so what about the valve that controls which evap is cooling?
    I have thought about doing something like this but it seems extremely complicated.

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  11. 04-07-2021, 09:44 AM #9
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    VTP99
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    Have they had problems with that two way valve ?
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  12. 04-08-2021, 07:57 AM #10
    danm009
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    Yeah it did have a linear one but now has a fixed speed
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  13. 04-08-2021, 07:58 AM #11
    danm009
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    I did try and use the r600 but had heaps of r134 and welding on the system with any r600 I was a bit nervous
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  14. 04-08-2021, 08:31 AM #12
    danm009
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    Na not hard at all , just put a relay in to control the compressor when the condenser fan cuts in .
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