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  1. #1
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    Chiller questions


    I saw a component on the refrigerant pipework on a chiller and was told it was an Auto Air Vent, I dont know if thats right, also why would one be necessary if the circuit had been evacuated before gas charge?
    Also I think the circuit has a leak in the heat exchanger, what is the best way to be sure? putting a dye in the circuit to see if it goes into the water?



  2. #2
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    Re: Chiller questions

    Auto air vent is on water pipes and not on refrigerant pipes.
    There is no way for valve to distinguish refrigerant gas from air. One who told you that is telling you rubbish, or I am lost something in translation.
    You probably saw something like this.
    Last edited by nike123; 11-10-2009 at 05:43 PM.
    Now, when I am officialy citizen off EU, I am looking for decent job! For any job offer please check my profile!

  3. #3
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    Re: Chiller questions

    Quote Originally Posted by nike123 View Post
    Auto air vent is on water pipes and not on refrigerant pipes.
    Far far away , there where centrifugal R11 chiller , working on Vacuum , so it have AUTO AIR VENT.

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    Re: Chiller questions

    Thanks for that

  5. #5
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    Re: Chiller questions

    What about knowing if a leak is in a heat exchanger?

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    Re: Chiller questions

    Quote Originally Posted by DEVITG View Post
    Far far away , there where centrifugal R11 chiller , working on Vacuum , so it have AUTO AIR VENT.
    not so far away and they are called purge units
    still used on r-123 units!!!

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    Re: Chiller questions

    Quote Originally Posted by colsy View Post
    What about knowing if a leak is in a heat exchanger?
    Remove refrigerant, pressurizing system with nitrogen and see if pressure drops and pressure increase on evaporator.
    What gas is in it? If you have R22, you can take some water from the evaporator, boil it and put your leak detector (or halid torch) in the fumes. R22 dissolves in the water.
    What sort of heat exchanger do you have?
    It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.

  8. #8
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    Re: Chiller questions

    Thanks for that tip, I like the idea of boiling the water. The chiller is a Carrier with R407c gas, I was thinking to cut the pipework and pressure test the heat exchanger and the rest of the circuit seperately, but surely there are easier methods.

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    Re: Chiller questions

    Quote Originally Posted by colsy View Post
    Thanks for that tip, I like the idea of boiling the water. The chiller is a Carrier with R407c gas, I was thinking to cut the pipework and pressure test the heat exchanger and the rest of the circuit seperately, but surely there are easier methods.
    That is second easiest method.
    First is lucky find.
    Now, when I am officialy citizen off EU, I am looking for decent job! For any job offer please check my profile!

  10. #10
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    Re: Chiller questions

    maybe if you close al the automatic vents,or air-separators on the water circuit,and see if the pressure is rising.

    Ice

  11. #11
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    Re: Chiller questions

    What is the model number of your carrier chiller

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