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  1. Replies
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    "engineer wife" Get the seasonal ground water...

    "engineer wife"

    Get the seasonal ground water and air temps and have the family engineer lay out the Mollier diagrams for whatever system you design and run that against local energy costs.
    ...
  2. Do you have a time machine? Mom's house has...

    Do you have a time machine?

    Mom's house has a circa 1953 Homeart ng furnace, stainless steel HE.
    A coil AC above.

    The Homeart still going strong, never replaced any gas parts, 62 YO furnace...
  3. Replies
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    5,703

    Fluke 36, 77, 77III, 77II, 117, and 123 scope for...

    Fluke 36, 77, 77III, 77II, 117, and 123 scope for the portable stuff. A few Tektronics scopes for VFD bench work.

    did not see anyone mention the 'free coupon' HF meters. Surprisingly accurate,...
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    896

    Saw this last year, see it is up to 210 views and...

    Saw this last year, see it is up to 210 views and no responses.
    Text implies 'new units' are all orifice type designs? I know nothing about orifice units, never have used for WSHP or GSHP. ...
  5. Replies
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    2,570

    When you use your argon mig welding tank...

    When you use your argon mig welding tank instead.....or brazing an external bracket...or throw a few pieces of dry ice in the line before brazing... or ....preform brazing in a vacuum induction...
  6. Replies
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    6,478

    +1, there is a reason for that code ...

    +1, there is a reason for that code

    Interesting discussion, but would NEVER cool down my own septic system.

    digestion takes place optimally around 30 to 38 °C, or at ambient temperatures...
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    854

    Just a little larger coil at each end and...

    Just a little larger coil at each end and TXV's... is all it would take.

    Hey, don't go givin' EPA any idears!.. such as mandating 'larger' coil by requiring all compressors to be changed out for 1...
  8. Replies
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    717

    Where are you clamping your ammeter? Most...

    Where are you clamping your ammeter?
    Most obvious answer is a 190 VA load on a single phase unless you are measuring directly on the motor feed leads.
    Or for some unfathomable reason, someone...
  9. Thread: work fatigue

    by junkhound
    Replies
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    1,330

    Cheesh, all you kids complaining about work,...

    Cheesh, all you kids complaining about work, heat, cold, etc. Why, in my day......<G>....

    Wait till you are north of 90! Neighbor is 93, reroofed his gazebo by himself, did not want any help. ...
  10. Replies
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    6,111

    'treasures" Go past a HF when taking...

    'treasures"

    Go past a HF when taking grand-kids from out house to theirs.

    ALWAYs find a big pile of different types of free stuff just laying near the checkout counter <G>

    Grandkids always...
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    527

    txv always feeds the evaporator For a HP, the...

    txv always feeds the evaporator

    For a HP, the evaporator is outside unit.

    Your Florida AC dominated type description sounds like you always refer to the outside unit as condenser?

    Never...
  12. Replies
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    3,493

    Happened to see this 8 YO thread - a lot has...

    Happened to see this 8 YO thread - a lot has changed since then courtesy of EPA?

    Here, price of ace since 2006 went from $22 to $90 a bottle refill - guess who has not gotten a bottle of ace...
  13. Replies
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    848

    the smell is not there. yep, even if someone...

    the smell is not there.

    yep, even if someone puts in BBQ gas with the smell, the a dryer part of filter/drier does a near perfect job of removing the mercaptan since its molecular structure is...
  14. Replies
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    310

    Dumb obvious question?

    Recently bought a mig welder, using flux core wire, would like capability to use Ar also.

    Local welding supply says I can swap my N2 bottle for same size Ar bottle. I use < 80 cu ft N2 per year...
  15. On a capacitor start motor the main purpose of...

    On a capacitor start motor the main purpose of the run cap is to limit the amount of current the start winding draws.

    Are there techs who actually believe that? May be good to hose a HO with BS,...
  16. Replies
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    1,141

    Since NC is not in an earthquake zone, maybe,...

    Since NC is not in an earthquake zone, maybe, with caveats as already mentioned.

    Out here on west coast and earthquake country, the only valid use for sharkbite or similar is temporary fix (very...
  17. Built a couple of houses while employed full...

    Built a couple of houses while employed full time, and installed HVAC in a few other houses while full-time employed.

    ONLY worked as I was not on any specific completion schedule (own $$ and land...
  18. Replies
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    508

    Up here in the 2 week summer climate, only ran...

    Up here in the 2 week summer climate, only ran the rheem about 10 hours in 10 years in AC mode, so only went for HP operation.

    UR right about practical limit and decreasing gains, never can get...
  19. Replies
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    508

    Max COP from HP

    Home HPO, replaced failed 4T scroll in 4T Rheem package unit with 2T scroll.
    TXV, R22, air-air, set fan at 1150 CFM (lowest speed) with existing ducting.
    Evap fan still at full speed.
    House...
  20. I tore down a Copeland scroll compressor that had...

    I tore down a Copeland scroll compressor that had the same symptoms. Think I posted some pic in a different thread earlier this year.

    Anyway, there were 3 screws that held the lower bearing into...
  21. Replies
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    699

    I run pressure at max tire rating on all my...

    I run pressure at max tire rating on all my vehicles, but then watch the tread wear and reduce if the tread wears faster on the crown.
  22. Replies
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    engineers... now boys, i R 1.. and so, when...

    engineers...

    now boys, i R 1.. and so, when my 4T HP comp failed, replaced it with 2T comp and overcharged system, heh, heh.

    however, the one that does always gets me is folks turning the...
  23. Thread: DW plumbing

    by junkhound
    Replies
    8
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    594

    I have a '92 Voyager, Plymouth that is, still has...

    I have a '92 Voyager, Plymouth that is, still has it's R12 charge too.

    It will blow cold air on a cold day as the AC comes on when in front windshield defrost mode to 'dry the air'.
    It should...
  24. Replies
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    1,720

    $100 mo basis stated in previous paragraph. ...

    $100 mo basis stated in previous paragraph.

    $100*.942 = $94.20; 100 - 94.20 = $5.80
  25. Thread: newton, 410a

    by junkhound
    Replies
    14
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    1,688

    'outdoor unit going out on high pressure the...

    'outdoor unit going out on high pressure the first few attempts on starting'

    Happened to me once like that, thought it was oil or something also; but, simple fix.

    I'd forgotten to open the...
  26. Replies
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    1,265

    pressure test the system and let it sit for a...

    pressure test the system and let it sit for a good amount of time

    Did not see it mentioned so maybe good to mention that if you let a pressurized system sit for a few hours be sure to not assume a...
  27. Replies
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    1,720

    A little punctuation and insertion of the correct...

    A little punctuation and insertion of the correct proper nouns could be helpful, eh?
  28. Replies
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    898

    Pop had a gravity powered ultra quiet...

    Pop had a gravity powered ultra quiet dehumidifier back in the 1950's, think the brand was Lido, or whatever mom had that had a run.

    Fill with CaCl2 and hang over the basement drain. Zero noise...
  29. Replies
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    1,720

    Example, ratio the number for whatever your power...

    Example, ratio the number for whatever your power rate and unit dealer cost/w markup are:

    This is very simplistic, but most consumers hould be able to follow it for an upgrade, assuming your...
  30. Replies
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    2,230

    ..... Advancement ..... small town (14,000) ...

    ..... Advancement ..... small town (14,000)

    Somewhat of an oxymoron, is it not? Is the town even big enough to support 2 hvac firms? Could you start out on your own - ask the poco if they put...
  31. Replies
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    4,843

    There is the problem, you are getting such a...

    There is the problem, you are getting such a heavy oxide coat on the copper even the phosphorous in the silphos wont dissolve it.

    You want just enough N2 flow to displace air, blow some N2 thru...
  32. Replies
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    4,363

    Update: I sent the photos to Emerson, and...

    Update:

    I sent the photos to Emerson, and received replies.
    Emerson has tested the compressors with the screws purposly omitted and did not have subsequent failures (they did not say how long...
  33. I have needed 33F thermostats for heating strips...

    I have needed 33F thermostats for heating strips on plumbing heat tapes
    method? - simply take the thermostats you now have, if 30 YO not likely to be digital, and readjust the internal...
  34. Replies
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    1,078

    switch wires for rub thru to copper OP likely...

    switch wires for rub thru to copper

    OP likely just moved some wires around when he replaced the xfmr and opened the intermittent short, joebear said it right to OP, go check all your wires -...
  35. Replies
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    690

    whats 2 more pounds under the hood my...

    whats 2 more pounds under the hood

    my sentiments exactly - never have understood why propane (R290) use in outlawed in US, esp in cars that have propane fuel.
  36. Replies
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    690

    'new' flammable european refrigerant

    article in wall st journal today about France not allowing sales of mercedes in France as mercedes has 134A refrigerant, which europe has banned.

    The article never identified the 'new'...
  37. Replies
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    I'm surprised they didn't just weld everything...

    I'm surprised they didn't just weld everything together.

    The lower bearing is one piece of what appears to be a machined 356 alloy aluminum casting - the 3 ears are aluminum, and not aware of any...
  38. Forgot to torque screws or left off loctite??

    Full thread in the tech-tech folder.

    Interesting failure mode, had wondered what was wrong with the system, turned out to be an inherent defect in the scroll compressor.

    Finally got around to...
  39. Replies
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    4,363

    418311418321418331418341 Finally got around to...

    418311418321418331418341

    Finally got around to cutting the bottom off the compressor to look at the bottom bearing. Bearing itself good, bu--

    Mystery solved - DEFECTIVE copeland assembly,...
  40. Replies
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    4,363

    keep SH in check without freezing up the coil ...

    keep SH in check without freezing up the coil

    Methinks you hit on a specific that needs correcting. Frozen coil = nearly closed txv severly limits oil flow.

    The climate here is very...
  41. Replies
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    4,363

    No, pretty sure sh OK, own thinking is it failed...

    No, pretty sure sh OK, own thinking is it failed just due to old age - total running hours plus number of starts over the last 15 years.

    Also tend to think that since we have pretty cool summers...
  42. Replies
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    4,363

    Upper bearing is a sleeve bearing, have not cut...

    Upper bearing is a sleeve bearing, have not cut it apart enough to know what the lower bearing is. The sleeve bearing does get a good side load just from the way a scroll works with the eccentric...
  43. Replies
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    1,273

    See the scroll compressor failure thread. ...

    See the scroll compressor failure thread.

    Even top of line components do wear and fail from normal wear. Compressor was in a 15 YO Rheem package unit, everything else in the system still A-OK,...
  44. Replies
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    Finally got around to putting a rigid extension...

    Finally got around to putting a rigid extension on the motor shaft to be able to move it and set up the dial caliper.

    My old fingers are sure getting weak that I could not move the stub (before...
  45. Replies
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    Does it pump at all once you start to spin it? ...

    Does it pump at all once you start to spin it?

    If I reassemble the scroll unbolted from the motor, it works just fine (just turning by hand)

    I can spin the motor rotor easily by hand, no...
  46. Replies
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    4,363

    scroll compressor failures

    4T ZR copeland scroll failure.

    In a past thread someone had said they cut apart every failed compressors they find to determine the failure mode - can anyone direct me to that thread?

    The...
  47. Replies
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    635

    Fridgistors (semiconductor Peltier devices, AKA...

    Fridgistors (semiconductor Peltier devices, AKA Seebeck devises) have been around since the mid 1960s. Also work on reverse cycle. Efficiency is only about 12% electric to 'cooling', vapor cycle is...
  48. Replies
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    2654 X amp ----------- = C voltage across ...

    2654 X amp
    ----------- = C
    voltage across
    capacitor


    Well, 2 guys got that part right on and know what is happening with them there electrons switching back and forth between electrical and...
  49. Son lives in Kent (East hill) so very easy for me...

    Son lives in Kent (East hill) so very easy for me to come get it if you are so inclined. Would even bring the truck, not even have to 'fit it in the front seat'. Would probably be a few months...
  50. If ya dont want the old one and are in the South...

    If ya dont want the old one and are in the South End (e..g near Renton) I'll come pick it up and haul it away.

    Would drop a small scroll into it and a variable speed fan and would make a great...
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