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  1. #1
    Join Date
    Oct 2012
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    Vac pump on suction or discharge valve



    Hi

    To create vacuum inside the compressor I was wondering if it is best to connect the vacuum pump to service valve on suction valve or service valve on discharge valve ?

    Or will it give the same result no matter which one I connect it to...

    How long time do I have to run the vac pump to make sure all air is out of the compressor housing.

    Thank u......



  2. #2
    Join Date
    Oct 2007
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    Re: Vac pump on suction or discharge valve

    vac on both sides for as long as possible, a torr gauge should be used to reach 500 microns or under 3 torr

  3. #3
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    Re: Vac pump on suction or discharge valve

    OK thanks.

    But about these 2 service valves. Are they both connected to the inside of the compressor housing ? (Bitzer comp)

    It they are, then I guess it should be enough to vac. from only one of them.

    Or are the not having suction from the same area inside the compressor ?

  4. #4
    Join Date
    Sep 2003
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    ISRAEL
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    Re: Vac pump on suction or discharge valve

    There are valves inside the compressor, remember?

  5. #5
    Join Date
    Aug 2007
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    Russia
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    Re: Vac pump on suction or discharge valve

    If you like to use only one side you should connect the vacuum pump to the service port on discharge valve.

  6. #6
    Join Date
    Sep 2008
    Location
    england
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    Re: Vac pump on suction or discharge valve

    If there are two service valves why not connect to them both? You`ll increase the vacuum flow and cut down the evacuation time.

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