HOW TO ADJUST A TXV ON A WALK IN FREEZER LIKE A PRO

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37 thoughts on “HOW TO ADJUST A TXV ON A WALK IN FREEZER LIKE A PRO

  1. James Scan says:

    Thanks for the video. It had R408a according to writing in marker on condenser. A follow-up video/comment could explain that if the room is recovering temperature the suction/evaporating temperature is slightly high and will drop as the room temp lowers.

  2. brandon HVAC/ANTS says:

    Should always take super heat at the evaporator but this probably isn't too far from the evap. I would have also put system through a quick defrost to clear the evaporator of frost before adjusting the superheat. Did you notice the line pinched going into the TXV? This may be what was restricting refrigerant maybe possibly. Thanks for sharing this with us.

  3. Banana Crapshoot says:

    Not trying to be negative. But there’s a lot left to be desired watching this with your diagnosis. Subcooling is pointless on units with a receiver. Superheat not measured where it should be. Etc..

  4. Ziaur Rehman says:

    I have the same problem with R22 , machine in which I have use Danfoss TEV . It's work for 20 mins then frosting start at evaporator coil and suction pressure getting down to 35 psi then machine gets trip.
    Will it work for the above …?

  5. Ever Griven says:

    Thanks for the video and for the all the comments from posters below .. Myself being a Newbie in this field, Where did the target superheat of 17 come from as mentioned at 8:33.. If a TXV is a set and forget kind of device, was this particular TXV adjusted because it lost spring pressure ( age )? Was this a new install that never worked right?

  6. Mr Adam says:

    Thanks for sharing I have 404a walk in freezer inside doesn't go below 20 degrees f suction was 17psi… I made it 24 and left I called the guy he said still 20 degrees what would be problemsthatvi should check thanks

  7. Fidel says:

    Your refrigerator is flooding back to your compressor. Your unit is over flooded. So what super heat are you checking there. You guys are confusing people.

  8. hvac01453 says:

    Man, some of these guys are downright mean-spirited. It almost looked like one of the three circuits was restricted. It may be because that particular leg was a bit more restricted than the other two…. whatever.
    It was obvious the coil was starved in the middle. The charge was ok with a clear sight glass. Strap that thermistor to where it comes out the box as best you can, the closer to the evaporator, the better. The real problem is when the TXV was installed, someone failed to use a backing wrench and twisted the liquid line, you can clearly see the pinched liquid line just under the TXV. Fix that to restore refrigerant flow,….. check the strainer while your there. Good luck.

  9. Ravi Yadav says:

    Hii sir , in walk freezer evaprator have frosting means gas charging proper or less ? Please advise suction pressure is 50psing discharge pressure 250 psing gas 404a cooling is not perfect..

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