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Thread: pressure check

  1. #1
    Join Date
    Dec 2003
    Posts
    10

    pressure check

    i do home remodeling and have to check pressures on a typical ac unit tomorrow, (texas). it's a dumb question, BUT i do not want to lose refrigerant when i remove my gauges. the valves are not back seeted, so i just crack the low side valve after pressure check, and wait for high side to go to zero, then close low side and remove gauges, right? TY!

  2. #2
    Join Date
    Apr 2008
    Location
    Southern New Hampshire (USA)
    Posts
    401
    Get yourself a set of low-loss hoses. If you can't afford them right now, they sell adapters to convert your standard hoses into them. That will solve your problem.

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,754
    If you got to ask this question. You don't know how to check an A/C. Call a contractor.
    You are suppose to have an EPA cert to connect and disconnect hoses on A/C, and HP systems.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    Apr 2008
    Location
    TEXAS
    Posts
    1,701
    first thing you do is contact the texas dept. of licensing and regulation in austin for the next available exam date,(hope you have 5 years exp. in the field). take the exam and pass, your'e on your way to the correct way not to lose refrigerant during a manifold removal!
    "When the people find they can vote themselves money,that will herald the end of the republic" - Benjamin Franklin

    "Government is not reason, it is not eloquence, it is force;like fire, a troublesome servant and a fearful master. Never for a moment should it be left to irresponsible action"- George Washington

  5. #5
    Join Date
    Feb 2008
    Location
    Western NC
    Posts
    2,504
    Quote Originally Posted by jamesk View Post
    i do home remodeling and have to check pressures on a typical ac unit tomorrow, (texas). it's a dumb question, BUT i do not want to lose refrigerant when i remove my gauges. the valves are not back seeted, so i just crack the low side valve after pressure check, and wait for high side to go to zero, then close low side and remove gauges, right? TY!
    Can someone please explain exactly what a typical AC unit is versus a non-typical AC unit???

    remember these 4 easy steps when checking pressures.

    1. get phone book
    2. get phone
    3. call someone who knows what they are doing
    4. don't forget the big tip
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  6. #6
    Join Date
    Dec 2007
    Location
    Ohio
    Posts
    2,875
    Quote Originally Posted by iraqveteran View Post
    4. don't forget the big tip
    I like pizza






    and a bottle of water







    or cash









    your choice

    I need a new signature.....

  7. #7
    Join Date
    Feb 2008
    Location
    Western NC
    Posts
    2,504
    Well.......It was 98* today. Heat index 106*......ROOF heat index 143*.


    I think I'll take a really tall glass of water. and free food and a re-fill before I leave for the next one.

    Get to next one and repeat process.
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

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