Search:

Type: Posts; User: mixsit

Page 1 of 7 1 2 3 4

Search: Search took 0.02 seconds.

  1. Replies
    57
    Views
    3,064

    I didn't see it mentioned but to me 'can't remove...

    I didn't see it mentioned but to me 'can't remove it' almost has to suggest they're dual layer and not being opened up so you can get the lint out.
    If that's the case, open them up for a real...
  2. Replies
    28
    Views
    1,523

    I tried about all of them and settled on this one...

    I tried about all of them and settled on this one -the difference as opposed to ones like post 12? It became real clear the first time I had an under-raised floor liquid schrader stick open. The...
  3. Thank you for all your responses. I'd think...

    Thank you for all your responses. I'd think Theoldscroll's post says a lot. Yes it can be done but like all systems (HVAC or otherwise..) the 'higher you push any technology the more the gotchas'...
  4. Are High-e gas heat installs inappropriate in cold climate regions?

    It never came up for me having worked in warm climates, I ran across this with the reason being stated problems due to icing of condensate.

    I wouldn't have suspected high-efficiency gas being...
  5. Trane has one that bangs the fan on and off on...

    Trane has one that bangs the fan on and off on narrow enough band in mild weather you'd think it'd tear it up in no time.
    Based on liq line temp, and IIRC the motor has a heat sink band around it to...
  6. Thread: humidity

    by mixsit
    Replies
    9
    Views
    728

    That's a heck of a way to try to go. Even in a...

    That's a heck of a way to try to go. Even in a 'vapor sealed' data center -with min. allowed OSA, it's tough (..read very expensive and still always 'chasing the goal.
  7. Replies
    12
    Views
    6,235

    In addition to no mention of superheat, is where...

    In addition to no mention of superheat, is where the frost is located. Likely it begins at the feed side of the coil... unless you have no fan flow...
  8. Something doesn't seem right about that. The...

    Something doesn't seem right about that.
    The extra volume ought to be compensated for with the appropriate additional refrigerant. And the same sub cooled conditions -yes?
  9. Replies
    22
    Views
    6,303

    Wow. This guy takes it apart, goes into it...

    Wow.
    This guy takes it apart, goes into it further etc. I had no idea. The element is in direct contact with the water. That 'indicator light' are the contacts arcing silly!...
  10. Replies
    23
    Views
    3,728

    No..? which, or what exactally?

    No..? which, or what exactally?
  11. Replies
    23
    Views
    3,728

    Which.. if I'm not mistaken.. Makes this... A...

    Which.. if I'm not mistaken.. Makes this...

    A bit of a popular myth doesn't it!
    :cheers:
  12. Replies
    9
    Views
    2,397

    It is about flow isn't it. I don't know how many...

    It is about flow isn't it. I don't know how many time the solution was getting permission to rid the zone of those damn perf grills.
    Especially in heat mode.. You want to see performance go up...
  13. Subscribing ...don't want to miss where this goes.

    Subscribing ...don't want to miss where this goes.
  14. Replies
    46
    Views
    5,419

    Yes. :>) I was going to add that while the...

    Yes.
    :>)
    I was going to add that while the part of the liquid from the condenser not going to use directly in the evap might be viewed as 'wasted, the flow also raises the suction pressure and...
  15. Replies
    7
    Views
    1,249

    Yes I intend to have it certified. I was just a...

    Yes I intend to have it certified. I was just a little shy about having removed the deposits -wondering if maybe that was boiler treatment that got back in there. But I think I'll give the repair kit...
  16. Replies
    7
    Views
    1,249

    Advice on a backflow preventer repair

    I just did temporary fix to a Febco 825y.
    http://www.febcoonline.com/Products/825Y

    Both check 'piston shafts' were stuck solid in their brass tubes. I got them both freed up removing reddish...
  17. No water piped to the roof is a huge drag no...

    No water piped to the roof is a huge drag no doubt about that. And time waster.. and they never think about how they pay for it.. every time!
    Just to add though, the static pressure [flow] would be...
  18. Wow. That bearing life vs temp chart. I believed'...

    Wow. That bearing life vs temp chart. I believed' already, but never saw this.There you have it. Explains a lot.
  19. Replies
    41
    Views
    5,236

    The super heat is low. And it's interesting if...

    The super heat is low. And it's interesting if even with the TXV screwed fully to its minimum feeding can't increase it. And if anything I would think not having clear liquid would contribute to...
  20. It's my understanding as well- ball bearings are...

    It's my understanding as well- ball bearings are preferred for motors run at low speed - due to the sleave's lubrication issues.
    But that's not the full issue here. These are not 'inverter / VFD...
  21. You do your own bearings. Wow! That's some good...

    You do your own bearings. Wow! That's some good service! :>) The motors are pretty pricey. I've taken some to the motor shop, but then they advised me 'half the time they'd apt to need end bells, .....
  22. I liked that idea- very much. And given the fail...

    I liked that idea- very much. And given the fail rates, a customer allowed me to mod some. I used lig line temp rather than pressure. ($50' Johnson electronic stat, accurate repeatable, dead band,...
  23. And running them a low voltages, also runs them...

    And running them a low voltages, also runs them very hot, 'cooking the lube in the bearings at low speeds -as it was explained to me by our very good local motor rebuild shop.
    20 (30? yikes!) years...
  24. Replies
    21
    Views
    2,156

    I remember hearing' swapping rotation on a worn...

    I remember hearing' swapping rotation on a worn in compressor doing some additional ware to the bearings ..?
  25. Are you replacing an existing P66 -and on a motor...

    Are you replacing an existing P66 -and on a motor designed for it -i.e. Liebert?
    Second, what do you mean 'super heat and sub cooling issues? -fan short cycling / over shooting?

    -I haven't had...
  26. Are you replacing an existing P66 -and on a motor...

    Are you replacing an existing P66 -and on a motor designed for it -i.e. Liebert?
    Second, what do you mean 'super heat and sub cooling issues? -fan short cycling / over shooting?
  27. Replies
    9
    Views
    2,298

    I have one building where the supplies are...

    I have one building where the supplies are conditioned air (from the hallway IIRC) drawn in only by the exhaust. Ironically (due to the 'returns/ceiling being 'hotter in the winter effect'- the rest...
  28. Favorite H10 story ..sorry if I've posted this...

    Favorite H10 story ..sorry if I've posted this before but, well..
    Tech's leak checking, 30 ton in a room maybe 70x30' with a hand held, can't find anything.
    Called me in hmm, 'let's try something....
  29. I apologize for the my previous response, I...

    I apologize for the my previous response, I totally misread it.

    This system's charge is likely 100 lbs or more, thus my wanting to zero in on how to get the mix right.
  30. Yep sounds about right that's probably what it...

    Yep sounds about right that's probably what it says..
  31. Fantastic, and simple as that. Not sure why I...

    Fantastic, and simple as that. Not sure why I thought it might be more complicated (this place needs a face palm thingy ;>)
    Thanks a bunch!
  32. In my search for above I just ran into a 'gotcha...

    In my search for above I just ran into a 'gotcha I also hadn't thought of- Nitro pushes freon away from (some) sections, and/or gravitates to the higher points in the system. Hmm.
  33. Wow thanks. So I'm shooting for it as % in vapor...

    Wow thanks. So I'm shooting for it as % in vapor obviously, and now ... I hadn't even contemplated yet [face palm.. grins]- What's a good way arrive at the ratio? 'X pressure of r22 > to the 150psi...
  34. What is the appropriate (minimum) r22 trace in a nitrogen test mix?

    I've not had luck looking for the answer to this.
    Plenty of something vague like 'only need a little from some techs/posts etc. For bigger systems, I'd like to find some guidelines.
    Detector will...
  35. Shoot, forgot to up date. Called Nu Calgon....

    Shoot, forgot to up date.
    Called Nu Calgon. Likely just stuff that settled out and no worries'. He said you could strain it out', but it's only on the bottom of the jugs. (the rest does look totally...
  36. We took some vid and pictures. If any turn out...

    We took some vid and pictures. If any turn out worth a darn I'll put them up.
  37. New C3 oil jugs with black stuff in the bottom?

    What would be up with that Like some dark stuff settled out in the bottom of the jug. Nu-Calgon C3, have had two now out of the case we bought a few years ago.
    Foil under the cap's tight..
    ??
  38. I generally figured 'txv wants a clear column,...

    I generally figured 'txv wants a clear column, I'd tend to end up in the 15+ range. So maybe there no performance gain past, 0-10?

    (yes maintaining temp, S/H's fine :>)
  39. Nope. No Lee temps just 415's 510's. Long runs,...

    Nope. No Lee temps just 415's 510's. Long runs, pretty sure Lierbert says, 'fill to clear (or close) and add some more'. Something technical like that. :>)

    Now the long lines and oil.. There the...
  40. Thanks. I'll tell ya' I'm beginin to feel a damn...

    Thanks. I'll tell ya' I'm beginin to feel a damn site better about this, especially after the the refer test. I was thinking I might'of been screwed 'to the tune of... about 140lbs !
  41. Thread: Voltage drop

    by mixsit
    Replies
    80
    Views
    9,063

    Would I=E/R apply closer in the condition that...

    Would I=E/R apply closer in the condition that gives us locked rotor amps before a motor begins to spin?
    I would think so, just never thought about it.
    Thanks for bringing it up.
  42. No, temp and pressure drop across the drier, but...

    No, temp and pressure drop across the drier, but S/C right before the glass, LL filter is well up stream of that.

    Yep. (Got caught on that once, good to go now :cheers:


    No receiver, but...
  43. Lots of sub cooling, but still not clearing the sight glass

    I'm about out of things to check here. This is a 15 ton 06D r22 to 407c conversion. POE RL68H.
    60#x220# liq. 15-20 S/H, 17 deg S/C. Looks like voids in the liquid (rather than foam or bubbles...
  44. Thread: Liebert VH363??

    by mixsit
    Replies
    17
    Views
    1,753

    Looks ok but for the low load. Shut it down. let...

    Looks ok but for the low load. Shut it down. let the r/a get up, get your readings while you have a load.
    You might see it drop out briefly when the Winter Start Delay expires (per LastMntnRefrig's...
  45. Well, skip that in the post above. Check out test...

    Well, skip that in the post above. Check out test yesterday, the unit does nothing like what was indicated by tech support.
    The unit shuts the comp down some 8 seconds or so after the lpco opens. No...
  46. Got our answer back from Bussman. "Hello,...

    Got our answer back from Bussman.

    "Hello,
    This question comes up somewhat regularly. It depends on what may have caused the fuse to open and how long the fuses have been installed.

    It is...
  47. Replies
    12
    Views
    3,346

    Nice, but for 90% of our refer side services are...

    Nice, but for 90% of our refer side services are down at the unit.

    The thing they (or we if they won't) ought to be installing is a liq ball valve + tap right before the drier. Cover both- access,...
  48. Ok, here's the answer on this one. After the...

    Ok, here's the answer on this one.
    After the winter delay (0-5 min adjustable now) the ICON controller enters into a second mode. The compressor will run regardless of a low suction condition for 12...
  49. Replies
    12
    Views
    3,346

    On smaller units mostly it's weigh it in, and...

    On smaller units mostly it's weigh it in, and then it's 'who asks for S/C anyway?
    On bigger units, especially splits etc, well they ought to have them shouldn't they.
    I've seen some 30 ton Liebert...
  50. Cool. Seems we're all of about the same notion, I...

    Cool. Seems we're all of about the same notion, I took it to the source :>)

    "Hi.
    Is there any reason to change the remaining surviving fuses after an electrical overload condition takes out one...
Results 1 to 50 of 336
Page 1 of 7 1 2 3 4