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  1. #1
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    Carrying out HP trip on Airedale chiller



    Hi guys.

    Have a question in which I'm hoping the more experienced engineers may be able to help me out with.

    I carried out a HP trip test but chiller didn't trip out on HP. It sat at 13.9Bar before going out on compressor overload and condenser fan overload.

    Now this circuit is R134A and appears to have a lack of fridge, although only running at 25%, no flashing sight glass and green, no temp difference across the drier cores, fans working well. The other circuit tripped out as it should.

    The only thing noticeable was the heavily frozen eev.

    Would this possibly be a HP switch or due to the lack of fridge or something else possibly?

    Help appreciated as I'm only new to this game.

    Thanks



  2. #2
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    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Re: Carrying out HP trip on Airedale chiller

    How did you perform the test?

    Compressor and condenser fan tripping on overload sounds strange to me.
    Brian - Newton Abbot, Devon, UK
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  3. #3
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    Re: Carrying out HP trip on Airedale chiller

    It’s an air cooled pacakge chiller.

    I turned off the fans to carry it out

  4. #4
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    Re: Carrying out HP trip on Airedale chiller

    What is the HP switch set at?

    How did the condenser fans trip on overload when they were switched off?

    The EEV may not be controlling properly, it needs checking.

    What is the chiller model number?
    Brian - Newton Abbot, Devon, UK
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    Re: Carrying out HP trip on Airedale chiller

    Hi Brian

    The HP trip is set at around 16Bar.

    I've no idea, that is what came up on the controller under alarms.

    I know it is short of fridge and that combining with the fact that teh eev is heavily frozen that could of been the issue?

    Airedale OPC850HEDQ14

    Many thanks

  6. #6
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    Re: Carrying out HP trip on Airedale chiller

    You need to repair the leak on the system and recharge it correctly before any further fault finding.

    You say it is short of "fridge", what type, under counter, concealed, bottle cooler? Or is it short of refrigerant?
    Brian - Newton Abbot, Devon, UK
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    Re: Carrying out HP trip on Airedale chiller

    I always have a set of gauges on when carrying out either a HP or LP trip
    I'm back on the Pale

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    Re: Carrying out HP trip on Airedale chiller

    Quote Originally Posted by Brian_UK View Post
    You say it is short of "fridge", what type, under counter, concealed, bottle cooler? Or is it short of refrigerant?
    Never seen a chiller serving a bottle cooler Brian...lol
    I'm back on the Pale

  9. #9
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    Re: Carrying out HP trip on Airedale chiller

    Sorry Brian

    I mean short of refrigerant. That’s just a term we seem to use. Thanks though I just thought I’d see if anyone had come across it before.

    Yes frank I had my Bluetooth gauges set on the system also that’s where I got the reading

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