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  1. #1
    Join Date
    Mar 2007
    Location
    NW AR
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    2,478

    Orange-ish Pink AEV?

    Delfield reach in freezer. No data tag. Wondering what kind of refrigerant used to be in it. It has an AEV that is pinkish orange. R12 or 502? I have some pics

    Copeland M# KAGB-005A-IAA-800 S# 00C75731

    Valve has CRO-4- 0/50 on it.

  2. #2
    Join Date
    Aug 2012
    Location
    Georgia
    Posts
    27
    I have one that has 404a. This one is about 12 years old.

  3. #3
    Join Date
    Aug 2012
    Location
    Tijuana, Mexico
    Posts
    18
    All delfield's i have seen are 404a and orange means 404a, R12 was yellow.

  4. #4
    Join Date
    Jul 2000
    Location
    Guayaquil EC
    Posts
    10,480
    The KAGB-005A-IAA is a service replacement compressor designed for R502 or its various interim replacement refrigerants like HP80 or R408A.

    The "A" in the model number of the compressor indicates it has (had) alkylbenzene oil in it, which would indicate that this box was originally designed for R502.

    The old R502 valves had purple on the powerhead.

  5. #5
    Join Date
    Mar 2007
    Location
    NW AR
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    2,478
    The entire valve is the same color. Doesnt really have a powerhead on it.

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  6. #6
    Join Date
    Aug 2012
    Posts
    15
    404

  7. #7
    Join Date
    Mar 2007
    Location
    NW AR
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    2,478
    One thing that was still legible was a tag on top of the box right near the compressor. It was like a key for which refrigerant the compressor used according to the 4th number on the compressor model. a = x reefer....b = x reefer, so on and so on.

    If the key was correct the compressor used to use 12 or 502

  8. #8
    Join Date
    Aug 2012
    Posts
    15
    I have seen where other companies came and changed things to use different Refrigerant.

  9. #9
    Join Date
    Mar 2007
    Location
    NW AR
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    2,478
    For sure. Ive seen it alot. Just dont know what to go with. The compressor tag says ABO oil. Is that compatible with 404? I know the guy who used to work on it and he does nothing right. It appears to be leaking at the oil level sight glass. Im not experienced with semi hermetic. How is the sight glass sealed? If I change the oil how far up on the sight glass do I fill?

  10. #10
    Join Date
    Aug 2012
    Posts
    15
    I would talk with some of the guys at the supply houses on this one, just to get it right the first time, Or call the manufacture just to be safe. thats what i do if I aint 100% sure.

  11. #11
    Join Date
    Oct 2011
    Location
    Chicagoland Area
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    4,830
    Quote Originally Posted by ar_hvac_man View Post
    For sure. Ive seen it alot. Just dont know what to go with. The compressor tag says ABO oil. Is that compatible with 404? I know the guy who used to work on it and he does nothing right. It appears to be leaking at the oil level sight glass. Im not experienced with semi hermetic. How is the sight glass sealed? If I change the oil how far up on the sight glass do I fill?
    404a needs POE. There should be an oil anount in ounces on the name plate. If not contact the mfg. you can get a kit with o rings for the sightglass
    Officially, Down for the count

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  12. #12
    Join Date
    Jun 2009
    Location
    DFW, TX
    Posts
    677
    The Valve sounds like the crankcase pressure regulator valve, not an AEV.

  13. #13
    Join Date
    Jul 2000
    Location
    Guayaquil EC
    Posts
    10,480
    I missed it in the first post, but that "TXV"...(Sporlan CRO-4), is being used as an AXV...or automatic expansion valve. It's not a thermostatic valve and so it has no powerhead nor does it care what refrigerant is in there. It's just a pressure regulator.

    The compressor model says it has AB oil....which is not good with R404A. I'd go with R502 or one of it's replacements. If you want to use R404A, change the oil to POE.

    BTW... the "CRO" means it's a Close on Rise of Outlet regulating valve.

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