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  1. Replies
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    Thank you all for your great insights. I am...

    Thank you all for your great insights. I am replacing a 35/5 370 GE as I type.
  2. Assuming that you mean the internal...

    Assuming that you mean the internal overload/temperaure protection device is opening after a period of hour or hours running. If the expansion valve is causing this indirectly it is because the...
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    7,295

    Why do run capacitors fail?

    The last few years I have seen a lot of run cap failures. It is easy money and all, but customers usually want to know why it failed. I can give them the glib "Made in Mexico/ China" answer but I'd...
  4. Thread: What next?

    by tchntch
    Replies
    9
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    680

    Laws and state certifications vary from state to...

    Laws and state certifications vary from state to state. Here in Wiscosin there is no requirement for technician liscensing. Maybe someone else from NC will join the thread with NC specifics.
    NATE...
  5. Paint thinner sounds like a terrible idea. In the...

    Paint thinner sounds like a terrible idea. In the old days we used R-11 as a flushing solvent but that is no longer legal, and incredibly expensive if available at all. There is a product called...
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    746

    Lennox no longer makes a replacement for the...

    Lennox no longer makes a replacement for the Pulse conrol. Baso has been manufacturing one that will work for the last year which looks quite different from the one you describe. Mavbe someone else...
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    2,992

    Yes, as others have said, there is no way to take...

    Yes, as others have said, there is no way to take perfectly accurate readings on a 40 degree March day. You will be lucky to have an indoor temp as high as 70 rather than the required 75-80. so your...
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    Another indirect check is CO in the exhaust. Bad...

    Another indirect check is CO in the exhaust. Bad secondary will result in 200ppm or much more. Normally under 50ppm. May also be some in the house, but not necessarily.
  9. Somewhere among all the numbers on most switches...

    Somewhere among all the numbers on most switches is a number series starting L___, such as L200 or L180. That is the temp trip point.
  10. Replies
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    I shoot for 105 degree saturation temp on the...

    I shoot for 105 degree saturation temp on the high side, which is a fairly standard rating point. That is about 210 psi for R22, 330psi for R410a, etc. I then look for 5-20 degree superheat on the...
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    2,591

    Thanks to both of you for the input. I've got...

    Thanks to both of you for the input. I've got plenty to work with when I get back there.
  12. Replies
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    Thanks again Alcomech, I have been using the...

    Thanks again Alcomech,

    I have been using the IOM manual to try to calibrate the unit. Im not sure I have been doing it well. It would be better if it didn't do the constant back and forth search...
  13. Replies
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    2,591

    Thanks Alcomech. When you refer to no...

    Thanks Alcomech.

    When you refer to no "abnormal noise" do you mean to say that there will be some noise? All the boxes that I have found make this noise. It is audible below the boxes which are...
  14. Replies
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    2,591

    Thanks for the reply. It is nice to know that it...

    Thanks for the reply.
    It is nice to know that it is possible to quiet them down and I'm not beating a dead horse. I just have to figure out what I haven't done right. I guess I should try another...
  15. Replies
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    2,591

    Vari-Trane VAV noise

    I recently took over a building with about 30 these VAV boxes. They were built in 1995 and are what Trane refers to as analog units and use 3k zone sensors rather than 10k. As the air valve (damper)...
  16. Thread: Recycle R22?

    by tchntch
    Replies
    4
    Views
    961

    Thanks for the input. After taking a goodsniff of...

    Thanks for the input. After taking a goodsniff of it I think it is probably too far gone to recycle safely, but the info will be good for the future.
  17. Thread: Recycle R22?

    by tchntch
    Replies
    4
    Views
    961

    Recycle R22?

    I have to replace a 35 ton compressor with a light burnout. What is your opinion on leaving the refrigerant in the system and recycling it through removable core acid filter driers? It used to be a...
  18. Replies
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    2,342

    What's the problem with Leak Lock. Works great...

    What's the problem with Leak Lock. Works great and I've never had a problem removing it. Are you thinking of Loctite?
  19. Replies
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    A lot of good ideas. I'm going to print this off...

    A lot of good ideas. I'm going to print this off and show it to my program director. Thanks
  20. Replies
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    1,104

    Thanks for the input. We'd be selling it to get...

    Thanks for the input. We'd be selling it to get money for student tools and instruments. If we wanted to use it we'd have to buy evaps and boxes, etc. No bucks for that. Just thought if I could find...
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    Thanks for the reply. I've got ebay in the works...

    Thanks for the reply. I've got ebay in the works but I thought I'd give this a try first.
  22. Replies
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    1,104

    My tech school has a number of 5-15 year old...

    My tech school has a number of 5-15 year old unused Tecumseh refrigeration condensing units as well as compressors and HVAC parts which were donated to us but we cannot use for instruction. Is there...
  23. Thread: Stumped

    by tchntch
    Replies
    12
    Views
    1,387

    Had this happen to a couple of units, but...

    Had this happen to a couple of units, but intermittently, when the G26 first came out. Failure to light pilot one out of maybe ten trials. After trying some of those other things I replaced the pilot...
  24. For Jim Davis you sound pretty knowledgeable...

    For Jim Davis
    you sound pretty knowledgeable about this so maybe you can clear up something for me. I've done startups on larger commercial waterheaters, boilers and furnaces, as well as clean and...
  25. Dry heat is what the chamber of commerce calls...

    Dry heat is what the chamber of commerce calls it. I did the opposite 10 years ago. From SoCal desert to Wisconsin.

    I prefer the desert because you can get outside any old time.We're having a warm...
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