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Type: Posts; User: CoolFox

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  1. Replies
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    976

    The molybdate inhibited chillers I've worked on...

    The molybdate inhibited chillers I've worked on have all been a clear solution.
    Have you always serviced this chiller?
    Is it possible that at some point someone has added Chromate?
    Once I had a...
  2. Replies
    8
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    976

    Its not the pudding thats turning it yellow, its...

    Its not the pudding thats turning it yellow, its the custard on top.
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    976

    Sounds like you have some solution in your ref,...

    Sounds like you have some solution in your ref, as already mentioned ref water is normally clear, as is Lithium bromide. A bright yellow / green colour is likely to be from the inhibitor used in the...
  4. Thread: wye-delta

    by CoolFox
    Replies
    14
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    2,040

    Is it failing during the contactor test or when...

    Is it failing during the contactor test or when it trys to run?
    Check for incorrect wiring or welded in contactors. don't forget these starters use 4 contactors the 3 large ones and a small one for...
  5. Replies
    8
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    1,502

    I've had units pull in a pint or so when the...

    I've had units pull in a pint or so when the purge valve was left open and a flush out of the chiller worked. 5 gallons though, Ouch. Assuming the pumps didn't run while the valve was open and the...
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    3
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    1,067

    Take your pick, Ion resin exchange, Refrigerant...

    Take your pick,
    Ion resin exchange,
    Refrigerant change,
    Bromide change,
    All with their own problems and costs.
    No magic bullet. If you find one let me know!
  7. Replies
    5
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    1,173

    Lithium bromide is a salt so doesn't wear out as...

    Lithium bromide is a salt so doesn't wear out as it were. However to work effectively it needs to be at the correct % in water. 'Weak' bromide could just mean that the concentration is low which can...
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    851

    Voyagers in the UK come with a transformer that...

    Voyagers in the UK come with a transformer that has built in fuses on both the primary and secondary sides. I assume that we must have different wiring regulations as wiring in imported US units used...
  9. Thread: Absorbers?

    by CoolFox
    Replies
    5
    Views
    707

    I must spend about 80% of my time servicing and...

    I must spend about 80% of my time servicing and repairing Absorbers. Their still popular here on sites with large boilers or CHP plant like hospitals and pharma sites. If the steams free or surplus...
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    3,665

    For what its worth have you checked the grounding...

    For what its worth have you checked the grounding of the whole unit? I've had voyagers do crazy things due to faulty earths. One occasion a unit would regularly go into fail for no reason, Tried...
  11. Did your guy prime the oil lines? Trane...

    Did your guy prime the oil lines? Trane compressors need the oil lines and filter filling with oil on start up to provide lub until the diff pressure can push oil from the sep into the compressor....
  12. Thanks, Thats what I thought. I've looked at the...

    Thanks, Thats what I thought. I've looked at the spec again and it only reads to 40 bar but is overload rated at 60 bar. A bit annoyed that Testo don't make this limitation clearer given that R410a...
  13. Can the testo 550 take a 45bar HP trip test?

    Hi.
    I've a question about the Testo 550.
    After reading the reviews about it I persuaded my boss to change from a refco gauge he was supplying to the Testo. We are replacing our older equipment to...
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