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  1. #1
    Join Date
    Jan 2007
    Location
    Frozen in UpState NY
    Posts
    59

    Walk-iin Frozen liquid line

    I have not come across this before.

    walk in cooler with 3 evaporators. I'm getting what looks to be a huge pressure drop across the liquid line solenoid valve.
    slightly warm on one side frozen on the other. Could it be that the llsv is not opening fully and acting as a metering device ?

    I did not do much with the unit because it was over 100 degrees here friday and it was off on head pressure. I removed the 3 shopping bags from the condenser got it running and rushed off to the next call.

  2. #2
    Join Date
    Oct 2011
    Location
    Chicagoland Area
    Posts
    4,565
    yup
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  3. #3
    Join Date
    May 2008
    Location
    Myrtle Creek. Oregon
    Posts
    182
    my thoughts too. sol. valve is restricted
    a stupid question is a question you wont to ask, but don't

  4. #4
    Join Date
    Feb 2008
    Location
    California
    Posts
    2,065
    For your liquid line to be frosted on the outlet of the solenoid valve, that's a major restriction.

    It was 100* and you had to rush to the next call? geeeze, what temperature was the walk in at? must have some patient customer there

  5. #5
    Join Date
    May 2000
    Location
    Monmouth Junction-NJ-USA
    Posts
    6,001
    Restriction for sure. Make sure the flow direcction is correct before taking the valve apart or changing it.
    If you really know how it works, you have an execellent chance of fixin' er up!

    Tomorrow is promised to no one...

  6. #6
    Join Date
    Aug 2012
    Location
    willowick ,oh
    Posts
    261
    I agree with rayr. check for the right direction. Iwould cycle it off of the defrost timer with your gauges on it to check its operation too. You may just have to replace the coil on it. But you may need to buy the whole valve to get the coil.

  7. #7
    Join Date
    Sep 2002
    Posts
    12,248
    A single LLSV?

    Or three separate valves? One for each evaporator?

    Pump the unit down and pull the top off the solenoid. Don't lose any of the parts. Make sure the bleed port is clear and look down inside the body for yak stuck in there.

    It is a flare or solder connection body?

    If that doesn't fix it I would put a drier right ahead of it and make sure the body is clear before installing the drier.

    Iron body or welded compressor? If it's an iron body maybe it's a scrap of gasket left from the last valve plate replacement. <g>

    PHM
    ------




    Quote Originally Posted by Baja ss View Post
    I have not come across this before.

    walk in cooler with 3 evaporators. I'm getting what looks to be a huge pressure drop across the liquid line solenoid valve.
    slightly warm on one side frozen on the other. Could it be that the llsv is not opening fully and acting as a metering device ?

    I did not do much with the unit because it was over 100 degrees here friday and it was off on head pressure. I removed the 3 shopping bags from the condenser got it running and rushed off to the next call.
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  8. #8
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,551
    Quote Originally Posted by Phase Loss View Post
    For your liquid line to be frosted on the outlet of the solenoid valve, that's a major restriction.

    It was 100* and you had to rush to the next call? geeeze, what temperature was the walk in at? must have some patient customer there
    They didn't need that walk-in.

    They only use it when it goes over 105 outside..

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