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  1. #27
    Join Date
    Feb 2013
    Location
    Australia, NSW
    Posts
    5
    Hi guys and girls,
    long time browser, first time post (just signed up)

    I dont do alot on ice makers down here, but as for hydrocarbons, here in oz thats the way they are pushing us! there only flamable between 2.5%-10% concentration, in saying that if there is no ignition protection on any of the parts its a no no!

    not sure what gasses you have in the states, were still using SP34E and R406A for 12 "drop ins"

    on such an old machine, avoid HC's.

    >Muz

  2. #28
    Join Date
    Mar 2007
    Location
    wedged in freezer shelf
    Posts
    6,967
    Manitowoc is coming out with HC
    Would agree and wouldn't consider it as a drop in. You'll get blamed for something even if it isn't your fault!
    “If You Can Dodge A Wrench You Can Dodge A Ball”

  3. #29
    Join Date
    Jul 2000
    Location
    Guayaquil EC
    Posts
    10,427
    Quote Originally Posted by itsiceman View Post
    Manitowoc is coming out with HC
    It looks like they've been testing R290 (Propane): http://www.danfoss.com/BusinessAreas...Ice+Makers.htm

  4. #30
    Join Date
    Feb 2008
    Posts
    96
    HP81 was a replacement for R502 0n Manitowoc Ice Machines. It worked fantastic and at the time of development was huge secret. I have converted out of warranty Hoshizaki's from R502 to HP81, along with isolating the discharge line in harvest with a check valve and have seen huge improvements of operation on a KM cuber. This refrigerant was a great replacement, one of the best. Although it has been debated as to using it in other refrigeration equipment, I have never had an issue using it.

  5. #31
    Join Date
    Feb 2008
    Posts
    96
    I remember Manitowowc had many problems with their TXV's. The part number 76-2109-3 will for ever be engrained into my memory. They switched to Danfoss which i think is a superior TXV compared to any valve on the market today......if you can braze correctly.

  6. #32
    Join Date
    Jan 2013
    Posts
    7
    Bringing back an old thread!! I got a full 30lb canister if r-12 off some kid for $100 because he did not know what it was.. Anyway.. Charged up the machine and the head pressure will rise but the suction stays in a vacuum. So now its time to change the TXV..

  7. #33
    Join Date
    Oct 2009
    Location
    Raleigh, NC
    Posts
    799
    I figured you had a bad TXV. $100 for 30lbs of R12 isn't too bad. It isn't worth much anymore, contrary to what many believe.

  8. #34
    Join Date
    May 2013
    Posts
    47
    What about MP39?

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