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Type: Posts; User: cool_tech

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  1. Replies
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    40 years old finished in 1971 in melbourne aus....

    40 years old finished in 1971 in melbourne aus. using pneumatic controls and these beams had a drip tray underneath in case of any condensation.
    I agree with what flange said building controls must...
  2. Replies
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    1,934

    Hi Have worked with a number of buildings with...

    Hi
    Have worked with a number of buildings with chilled beams one building is 40 years old, still working well. some may have a lint filter which will need to be cleaned. make sure thermostat is in...
  3. Thread: Retrofitting

    by cool_tech
    Replies
    1
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    782

    Hello There will be a company that can make a...

    Hello
    There will be a company that can make a new condensing unit using 134a or maybe off the shelf being 134a. they will need to know pipe sizes, model numbers if any and if you can take the unit...
  4. Replies
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    2,356

    liebert belts?

    g' day fridgies
    As all the other guys have said, dont go cheap on the belts, make sure all pulleys are in good nick, and are alighned properley.

    What are the liebert vt belts I have never heard...
  5. Replies
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    1,441

    G'day guys sorry I was thinking of another type...

    G'day guys sorry I was thinking of another type of machine. Try this link it ios pretty helpful. good luck
    http://eto.carrier.com/
  6. Replies
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    1,441

    Hello I take it this is on a chiller. ...

    Hello
    I take it this is on a chiller. what is the model? that fault can also mean phase reversal or power failure. a lot of the scroll compressor chillers will have a phase fail relay which...
  7. Replies
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    3,023

    30gx

    hey guys,
    had a 30gx playing up about 3 months ago with oil problems, got carrier out there he said that oil can get stuck in the evap, add oil run system to get oil to return then remove oil...
  8. Thread: DDC

    by cool_tech
    Replies
    4
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    829

    ddc

    hey mate,
    check all comms cables going to all controllers and check any fuses that maybe on controllers/ modules.
  9. Replies
    2
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    640

    hows the eucalypts

    hey koala
    is it an apac aircon? ducted split or package? apac were a division of apac made in western australia. i take it you are from aus. if so total line should be able to help.
  10. Replies
    18
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    2,710

    ahoy ther matey

    hey there, just had a quick look on R414b it is a gas only used in canada
    [ just reading from du pont's website.] looks to be similar as nu22. is you look at the pressure temp chart it shows that...
  11. Replies
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    3,137

    copper

    we had a problem on a unit which kept having leaks on evap coil had it tested in lab said coil was eaten from inside out. i guess from acid build up but compressor was fine
  12. Replies
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    12,574

    buzz bar

    i also agree with the electriian could be a relay buzzing or if there is another contactor in there which could be making the buzzing noise
    you will be able to tell which one one it is if you tap...
  13. Thread: email a/c

    by cool_tech
    Replies
    33
    Views
    2,504

    not diy

    hey guys thanks for your replys ok where do i start,
    compressor was wrong type rated at 25 kw for r404a
    long pipe run anly allowed to vac out for an hour,
    over charged by 10 kg of refrigerant,
    no...
  14. Thread: email a/c

    by cool_tech
    Replies
    33
    Views
    2,504

    email a/c

    Gday guys
    just after some advice on a unit which i was sent to to try and salvage it. a new compressor was put in, a copeland sroller, for an old copeland recip. the compressor is a qr...
  15. Thread: O6E Troubles

    by cool_tech
    Replies
    11
    Views
    1,406

    o6e

    hey guys
    i would take an oil sample and send it to be tested, they will pick up any brass, copper, steel in the oil,
    lukey
  16. hi just did a bathroom upgrade and we have a 3...

    hi just did a bathroom upgrade and we have a 3 in1 fan light heater and an extra fan to get air out.
    easy and cheap wire it in with the other fan
  17. Replies
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    682

    comms problems on trane screw

    g'day
    just after some information or past expeiriences with communication problems on trane screw chillers . the fault was coming up comms failure on compressor unloader. check terminals for...
  18. Replies
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    1,069

    hey guys from what i have seen on...

    hey guys
    from what i have seen on here isnt good about the gauges, i was buying the gauges because they have the vac gauge on them ,
    price of the gauges are $540+10%gst
    a cps vac...
  19. Replies
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    1,069

    refco digimon

    hey guys

    just wanted some thoughts on the digmon gauges they are being released in australia. i have ordered a set and are selling like hot cakes.
    what dramas have peope seen with...
  20. Replies
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    2,313

    gday guys mado has is that a superheat at 6k...

    gday guys
    mado has is that a superheat at 6k degrees celcius which roughly works out to 42f (correct me if wrong)
    does this machine ever turn off ?is it under sized for the application
    i take it...
  21. Replies
    12
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    891

    thanks

    thanks for your info guys great help, i have no hesitations of getting the electronic gauges now
  22. Replies
    12
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    891

    yellow jacket

    hey guys
    just wanted to know what your thoughts are on yellow jacket tools.
    In Aus i havent seen a lot of their tools only know of one shop in melbourne that sells their gear. any tips...
  23. Replies
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    1,109

    water leak

    hey guys,
    You could conduct a oil acid test, water would also block up tx valves and if there is that much water in it and its getting back to compressor then it would short out the...
  24. scrolls

    hey guys
    one thingit could be is the cap tube might be blocked up , have seen it before with simmilar pressures, is it a scroll comp?
  25. Replies
    6
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    861

    water furncae

    hey guys,
    what sort of furnace is this ? does it run on refrigerant, or is a gas burner type
  26. Thread: TXV

    by cool_tech
    Replies
    7
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    1,026

    txv

    g'day
    what is the make model and serial number of the a/c unit? that can help with getting a new one? what refrigerant? and pipe sizes? all this info will help
    in getting the correct txv
    ...
  27. Replies
    14
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    21,981

    dry cooler

    hi,
    have had 2 coolings towers removed and they have put in two drycoolers, the work well lot less maintenance, cheaper to run because of less dosing of chemicals, we had a few little teathing...
  28. Replies
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    3,626

    cheap copper and bad workman ship

    have heard of this problem before from bloke i know but that was on air cooled condensors from trane, also seen it on york units and was told coils were made in malaysia not australia anymore
  29. Replies
    0
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    532

    electronic gauges

    hello
    just wondering what you guys think of the electronic gauges?
    what brands to recommend what price they are roughly going for?
    any tips would be greatly appreciated
  30. Replies
    14
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    2,416

    trane

    hi guys when you said it was a wye transition i knew it was a problem in the star delta start, i look after this building and trane look after the chillers, i reset the chillers went to look through...
  31. Replies
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    2,416

    trane

    thanks mate
    will monitor it for the next few weeks see how it goes
    lukey
  32. Replies
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    2,416

    trane

    hey all
    nice joke i like that one,
    it was failure to complete transition what does this mean
  33. Replies
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    808

    heppa

    hi,
    with heppas it all depends on the pre filters the enviroment outside, roughly around 70-100 pascal pressure drop correct me if wrong.
    the heppas can last up to 3-5 years must be air balanced...
  34. york cont

    sorry didnt quite finish the tx valve could be faulty all together
  35. york

    hi does this system run a tx valve ?the tx valve bulb could be low on charge check or you could have a blockage somewhere
  36. Replies
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    766

    glycol/methanol

    hi i guess you could use a hydrometre to measure the specific gravity or you could get a chemical dosing company eg hydrochem can tell what you have the freezing point and the mixture with water....
  37. Replies
    14
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    2,416

    trane chillers

    hello went to site today noticed trane chiller with a fault, looked at fault it was reading transmission complete crkt 1b i have noticed this once before when the building went into fire mode, anyone...
  38. Replies
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    917

    clipsal c-bus

    it sounds like the same thing maybe honeywell is markeying the clipsal cbus product in the USA. can control a wide range of thing home/ commercial automation.
  39. Replies
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    8,392

    scrolls

    heloo do your units have service valves on the compressors or are they welded, i was told theye are now extra $$$$$
  40. Replies
    5
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    699

    danfoss

    thanks for your help , it has the fire relay go to contact 32 so it needs the run till destruction or run at 50 hz on that setting
    vlt 6000 sounds like the right model
  41. Replies
    6
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    917

    c bus

    c bus is massive here in aus easy to use, wont be long untill it goes really big
  42. Replies
    5
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    699

    danfoss speed drives

    hellooo

    I have a danfloss speed drive which runs a 30 kw motor (48 hp) it is set up to run in fire mode (run untill destruction) . for some reason the setting are not there or have been changed ,...
  43. Replies
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    8,392

    rb30

    hi ,
    I have 4 of theese chillers installed on a site of mine, they have ben runnning for 6 months 2 have had leaks , one which was on the bends on the condensor. also i have notice they have no...
  44. Replies
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    970

    pool heating/cooling

    hey big mike, have seen a few different types of heating for pools, one was an air exchanger, pumped in air from outside through a hhw coil to heat air, pool are was pretty big 25 metre pool by 5...
  45. Replies
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    3,582

    mr slim

    hey trapper, do you have a code book?
    if not you may be able to down load one of internet,
  46. Thread: blockage?

    by cool_tech
    Replies
    5
    Views
    849

    blockage?

    hey,

    today i was working on a carrier split, i just replaced the compressor the third in 4 years. the unit is only small 6 kw of cooling. what noticed was some of the passes in the condensor had...
  47. Thread: TXV question

    by cool_tech
    Replies
    13
    Views
    1,944

    txv

    sometimes a rag drenched in warm to hot water can work aswell on the buld if it is in a tight spot.

    have also heard that if you put hot water/ hot rag on power element any gas which is trapped in...
  48. Thread: high amps

    by cool_tech
    Replies
    5
    Views
    797

    high amps

    hello
    i had a problem where pulleys were worn out on to york pac units. i replaced the old adjustable pulley with a pulley the same size.
    the ac units ran for 2 weeks then they both tripped...
  49. Thread: arbs

    by cool_tech
    Replies
    0
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    340

    arbs

    hey ,
    any one from australia going or has gone to arbs this week ?

    (its a convention on airconditioning and refrigeration and building managment)

    lukey
  50. Replies
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    1,267

    busy busy busy

    hello,
    i work in australia and down here we are flat out well most of us, every new hi rise building has to have some hvac, whether it is supply air fans, exhuast fans, a cooling tower for...
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