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  1. #1
    Join Date
    Jan 2007
    Location
    melbourne
    Posts
    8

    Default bleeding air fron air con pipes without vac

    how would i tell when the air has been blead (purged)from air con without using a vac.

    i was told to open one valve (leave other valve closed)
    bleed air using the bleed valve util white gas just apears,then stop
    open second valve, thats it, jobs done!!

    **BUT** how much air needs to be blead?? i blead for 3 secs or so and did not see any what gas?

    help?? I dont want to waste the gas or vent into the ozone.....

    Cheers, Richard

  2. #2
    Join Date
    Aug 2006
    Location
    Australia
    Posts
    66

    Default

    Count to 10...

    Either way, its not going to be perfect, either you will leave some air in the system, or leak some refrigerant. Its the risk you take when not using a vac pump.
    I accept no liability or responsibility for advice offered by myself regarding Electrical or Airconditioning related questions. I strongly advise contacting a Licensed Tradeperson for all work of this nature.

  3. #3
    Join Date
    Dec 2006
    Location
    Canberra
    Age
    45
    Posts
    93

    Default

    Quote Originally Posted by rgormley View Post
    help?? I dont want to waste the gas or vent into the ozone.....
    Then use a vac pump or have someone do it for you.

    If you don't you will have a contaminated system which will fail prematurely as well as venting to atmosphere. LAst time i checked it was a $10,000 fine if you're caught purging a system.

  4. #4
    Join Date
    Oct 2003
    Location
    Kentucky NSW near Tamworth, Australia
    Age
    86
    Posts
    1,067

    Default

    Quote Originally Posted by Timmo View Post
    Then use a vac pump or have someone do it for you.

    If you don't you will have a contaminated system which will fail prematurely as well as venting to atmosphere. LAst time i checked it was a $10,000 fine if you're caught purging a system.
    I thought that was only for the old gas. If it was a new unit it wouldn't have the old gas in it.

  5. #5
    Join Date
    Aug 2006
    Location
    Australia
    Posts
    66

    Default

    I thought that was only for the old gas. If it was a new unit it wouldn't have the old gas in it.
    I believe it is illegal to deliberatly release any kind of refrigerant.
    I accept no liability or responsibility for advice offered by myself regarding Electrical or Airconditioning related questions. I strongly advise contacting a Licensed Tradeperson for all work of this nature.

  6. #6
    Join Date
    Jan 2006
    Location
    Glen Waverly
    Age
    47
    Posts
    17

    Default

    Quote Originally Posted by cross View Post
    I believe it is illegal to deliberatly release any kind of refrigerant.
    It is illegal, it seems that the diy installation of split systems and venting of ozone depliting substances has become quite a concern.

    http://www.environment.gov.au/atmosphere/ozone/publications/split-systems.html

  7. #7
    Join Date
    Dec 2006
    Location
    Canberra
    Age
    45
    Posts
    93

    Default

    Quote Originally Posted by Barry_White View Post
    I thought that was only for the old gas. If it was a new unit it wouldn't have the old gas in it.
    Wrong!

    Most non-inverter systems still have HCFC R22 (old Gas) and mineral oil. It's slowly being phased out but still very common. I work for a very big computer air manufacturer and R22 is still our main product.

    The newer refrigerants HFC 407c and R410a which are the 2 most common in domestic air conditioning may not have the same ozone depleting (ODP) rating but are still very nasty greenhouse gases. As global warming is a very hot issue at the moment the fines are set accordingly.

    And seriously If you don't know the properties of the gases, esp. R410a, please read up on the hazards first. I'm not against DIY jobs but they do need to be done properly and checked.

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