I adjust an expansion valve on a walk in freezer

Allied Refrigeration 440-823-5720
Cleveland, Ohio

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25 thoughts on “Change and adjust an expansion valve on a walk in freezer part 1

  1. Dave Miller says:

    Great job as usual Jim. Thanks for the tip on the Johnston app, going to get it in my phone. they sure could redesign where the txv goes .what a pain to get at! thanks for posting.

  2. Versace Cooks says:

    i have a question. i was trying to charge to charge a R22 systems that was low on gas ,and the suction line was frosted from the compressor all the way to the evaporator coil about 50'

  3. Keon Young says:

    I agree with you on most things you have stated here but I disagree about the frost on the compressor. I’ve seen many R404a freezer systems with frost on the compressor but at appropriate superheat for both the evaporator and the compressor. If this was a cooler I would be 100% on board with you.

  4. T Bone 63 says:

    Great video Jim. Very informative. Here in Zimbabwe we use Sporlan, Alco and Danfoss TXV'S.
    I prefer Danfoss with threaded flare nurs so much easier than unsweating. If flared well they don't leak.
    Enjoy your videos. Great.

  5. Jammin Wrenches says:

    I like to take the TXV apart and clean it with brake parts cleaner. So far I have not had to replace one just clean them. A tiny brass brush and some green brake parts cleaner (green can is non-clorinated). Put it back together and dump the old charge back in.

  6. Tom Oliver says:

    I always have a spray bottle full of water nearby when brazing for fire safety and to cool the valve I use a wet piece of cloth while welding. Been using my turbo torch for almost 40 years. I also just started carrying my OXY acetylene torch again because on some repairs OXY works better.

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