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AC receiver dryer

Discussion in 'Technical Q&A' started by dantm, Apr 14, 2015.

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  1. dantm

    dantm Formula 3

    Nov 1, 2003
    1,103
    YYZ, BOS, SFO
    Full Name:
    Dan B.
    #1 dantm, Apr 14, 2015
    Does anybody have a good primer on how these work? I have one here that has the in and out ports (which I understand) but separately it has two sets of electrical connections on it.

    Any insight would be helpful/useful.

    Thanks all.
     
  2. dantm

    dantm Formula 3

    Nov 1, 2003
    1,103
    YYZ, BOS, SFO
    Full Name:
    Dan B.
    #2 dantm, Apr 14, 2015
    Last edited by a moderator: Sep 7, 2017
    Here's a picture of the top connections...I am quite sure one of the two electrical connections is a pressure switch, but what would the other one be used for?
    Image Unavailable, Please Login
     
  3. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,274
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #3 Rifledriver, Apr 14, 2015
    Hi/Low switches. Prevents operation if freon pressure goes too high or low.
     
  4. dantm

    dantm Formula 3

    Nov 1, 2003
    1,103
    YYZ, BOS, SFO
    Full Name:
    Dan B.
    #4 dantm, Apr 14, 2015
    Thanks Brian -- only issue I've had with this is I have not been able to find another similar configuration, old or new. Most have a single switch for both high/low or only low?, and a charge port.

    Has anybody seen one of these ones before and can you guys give me an equivalent part number?
     
  5. dantm

    dantm Formula 3

    Nov 1, 2003
    1,103
    YYZ, BOS, SFO
    Full Name:
    Dan B.
    #5 dantm, Apr 14, 2015
    Last edited by a moderator: Sep 7, 2017
  6. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    37,274
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    #6 Rifledriver, Apr 15, 2015
    They now have combination HI/LOW switches. The 2 switches are usually wired in series so a single switch can be installed without modification.


    Take it to a good automotive A/C supplier and they will give you what you need.
     
  7. dantm

    dantm Formula 3

    Nov 1, 2003
    1,103
    YYZ, BOS, SFO
    Full Name:
    Dan B.
    #7 dantm, Apr 15, 2015
    Thank you, it's very clear now. I have the alternate part number for this unit but like you mentioned it's been up-reved to have a single pressure switch with a dual functionality.
     

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