This walk-in was leaking in multiple places.
Found and fix one leak 1/2 year ago.
Not so long ago found couple more.

got new evaporator and txv.

when was pumping down system – lowest my suction got t0 20PSI – compressor never shuts off. Receiving tank can not hold that much refrigerant.

System had low pressure switch (non adjustable). – Replaced with our kind(adjustable) – set it up to shut off compressor at 25 PSI on suction.

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17 thoughts on “Replacing Evaporator Coil For Walk-in Cooler R22 or R422D. HVAC-R. 1080HD.

  1. Tazzman228 says:

    I hate to call you on this Mart but looks line you did not install the nozzle in the distributor. Most all manufactures require that the nozzle be installed prior to installing the txv not doing so will cause uneven refrigerant flow thru the coil and cause potential ice ups eventually.

  2. Jay Smith says:

    where is the nitrogen tank?  that will be another return trip. copper oxidation.  I did not see a micron gauge either.  should pull down to 500.  the gauges will show 29.92 after ten minutes. to get a true vacuum you need the gauge for that.

  3. Gary Warren says:

    How do you mount the evaporator if the cooler has a rubber roof over the top? Drill through the roof or somehow use the existing bolts and unistrut and lower the new evap?

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