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  1. Thread: ADDISON

    by will smith
    Replies
    2
    Views
    670

    I used to do start ups on Addison equipment now...

    I used to do start ups on Addison equipment now and again-if I remember correctly, you'll have to contact Addison support with the model/serial numbers for the diagram. Desert Aire is the same...
  2. Thread: Fieldpiece

    by will smith
    Replies
    133
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    22,571

    Just picked up a DL3 with amp head-very nice....

    Just picked up a DL3 with amp head-very nice. Like the trigger feature that allows you to set the hi/low points for data logging. (Have a compressor that has been tripping a breaker-can't get it to...
  3. Replies
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    1,233

    I haven't converted from 22 to MO99, but have...

    I haven't converted from 22 to MO99, but have talked to one of my suppliers that has a customer that did. One thing they did was change the seals on all their solenoid valves. They put the same type...
  4. Replies
    10
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    1,672

    Bear in mind-

    Carrier roof top units for example, won't give you a liquid line access port if the unit has a cap tube/piston feed. You'll be charging based on superheat anyway. It's nice to be able to check both,...
  5. Replies
    11
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    1,846

    Just the opposite for me-

    I ran across just the opposite setup yesterday...Had a 410A Carrier condenser which had been put in some 7-8 years ago. I was out to do a system check, found it iced up. Thawed it out, made sure...
  6. Replies
    3
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    779

    Science and Art of Charging

    Right on-the manufacturers have good literature regarding how much additional you'll need per line size/length. If you've got a system with a TXV, your subcooling will tell you if the charge is good,...
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    848

    Pool unit

    Try the Desert Aire website-there is a lot of good info there that should help you with sizing.
    Best Of Luck!
  8. Replies
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    1,276

    Compressor changes-heads up

    Thought I'd chime in on something I've been seeing more and more of recently. I've run across R-22 systems that have had compressors replaced, and the compressor had POE in it instead of mineral. So...
  9. Replies
    18
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    2,343

    Something to consider-

    If you have a unit that has 3 phase compressors and blower motor, they should both be phased properly from the factory (A-B-C). That doesn't mean they can't be wired wrong in the field, but if one is...
  10. Replies
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    1,728

    I've also run into contactors that would just...

    I've also run into contactors that would just buzz-that is, not pull in-because the transformer was not tapped to the correct primary voltage. Same thing if a transformer doesn't have a high enough...
  11. Replies
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    1,876

    Hate to talk pricing about anything-but by me the...

    Hate to talk pricing about anything-but by me the CPS transformator is around $125.00 or so, less tax.
    As far as function goes, it'll work all the better if you sink it in ice water, but just water...
  12. Replies
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    1,876

    Creek1- CPS makes a device called (drum roll...

    Creek1-
    CPS makes a device called (drum roll here-) The Molecular Transformator. I kid you not-that's the name-COOL! Anyway, all it amounts to is basically a condenser. If you're doing a recovery...
  13. Replies
    12
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    1,411

    Do yourself a big favor

    And go through all of your menus-check to see what they are set for. Your equipment may or may not have been set up properly from the get go. When you get the hang of the Microtech II, you'll find...
  14. Replies
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    1,411

    Oh yes indeed read the manuals. More than once is recommended...

    Jumper wires are fine on a 10 ton Carrier-I wouldn't recommend them on Microtech II or III. The controller/boards are only going to be around until inventory is exhausted. If you have a lot of units...
  15. Replies
    12
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    1,411

    Micro Tech II

    Here's a manual for your application-you should get used to using the MII program if you're going to be working on them. You can make adjustments in the controller to get the system to cycle up...
  16. Replies
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    1,876

    I was crazy enough to go out on my own years...

    I was crazy enough to go out on my own years back-best of luck to you. I used Quick Books Pro for book keeping-found it to be easy to use with lots of useful features-would make your accountant's...
  17. Replies
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    1,876

    Evac

    Definitely with you as per proper evac. I've got two 6 cfm pumps that really earn their keep- I shoot for 500 microns too. Had a McQuay rooftop unit that was so contaminated once (evaporative...
  18. Replies
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    1,876

    Just out of curiosity-who did ya deal with? (used...

    Just out of curiosity-who did ya deal with? (used to do startups/warranty work on Desert Aire, and dealt with the factory folks quite a bit-great group to deal with. Worked with a couple of them in...
  19. Replies
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    1,567

    McQuay has compressors 1 and 3 on one circuit, 2...

    McQuay has compressors 1 and 3 on one circuit, 2 and 4 on another. If you don't see oil at the compressors, first question is-where is it? I'd look for a leak first off.
    Which Microtech controller...
  20. Thread: R-22 $$$$$$

    by will smith
    Replies
    18
    Views
    2,366

    R-22 $$$$$$

    I wish I'd bought a skid or 10 of R-22 back when it was cheaper than a case of good booze (well, really good booze)-I'd be sending this out on an island somewhere if I had-MY island...
    Anyway- have...
  21. Replies
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    1,876

    As far as it going off on high pressure, is it...

    As far as it going off on high pressure, is it possible the condenser wasn't being energized at the time? Seen that happen before where a relay hung up at times and didn't pull in. Does it have a fan...
  22. Thread: Megging!

    by will smith
    Replies
    26
    Views
    2,560

    Meg checks-just another tool in the arsenal

    I have to say I find it to be useful. If the compressor meggs out poor but is still running, you have a chance to recommend a replacement before it turns into a burnout. If it burns, the customer...
  23. Replies
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    2,310

    Sorry to hear it-but...

    Doesn't sound like you were dealing with a very competent service manager to begin with. You came from a residential background, they hired you on board, then decided they needed someone to work on...
  24. Replies
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    1,164

    The unit wouldn't happen to be a McQuay, would it?

    The unit wouldn't happen to be a McQuay, would it?
  25. Replies
    22
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    2,803

    A-men on the Arcflash

    Everyone in this trade-field AND office-should have to go through arcflash training. Heck-I think everyone should have at the minimum OSHA 10 training. Lots of ways to get hurt/killed. Field...
  26. Replies
    18
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    2,310

    Trane Voyagers

    Don't beat yourself up for not knowing how these work if you're just getting started in commercial work-none of us are born knowing this stuff. I like the fact that you are taking initiative to find...
  27. Replies
    15
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    2,540

    Thanks to everyone for their input on this one....

    Thanks to everyone for their input on this one. We've ended up putting in a new Wilo Stratus D series dual pump. I'm heading back out today to put the finishing touches on it, though we got it in...
  28. Replies
    15
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    2,540

    Thanks for all the input-the manual helped...

    Thanks for all the input-the manual helped clarify what this pump was capable of, though I have to say Grundfos' site is as clear as mud. We've since found that parts are no longer available for this...
  29. Replies
    15
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    2,540

    Pump number 1 failed mechanically about three...

    Pump number 1 failed mechanically about three months ago, and number 2 failed electrically yesterday. We would like to replace it with a B&G-which is easier to get parts for here in Chicago-but can't...
  30. Replies
    15
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    2,540

    Grundfos pump

    :gah:Anyone ever run across a Grundfos pump model UPS 65 160, with an additional tag on it of "8542 Dual"? We've tried our local rep with little success so far-the numbers on it aren't coming up good...
  31. Replies
    19
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    2,717

    If everything is supposed to be 120, and at a...

    If everything is supposed to be 120, and at a point you're seeing 240 (again assuming wiring is standard US), I'd check all the neutrals-make sure they are dedicated from stem to stern, and not...
  32. Replies
    7
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    1,357

    I haven't seen any control voltage fuse trips...

    I haven't seen any control voltage fuse trips personally, and I wasn't able to get out there yesterday to go over transformer sizing/24 v grounding. Also don't know if the fan was set up properly.
    ...
  33. Replies
    7
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    1,357

    The first time we were called out just over a...

    The first time we were called out just over a week or so ago, one of our techs found all 7 time delays bypassed. Wired as such, as soon as the heat relay pulled in, all 8 stages would energize. ...
  34. Replies
    7
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    1,357

    Aaon electric heat problems

    :gah:I ran across 2 Aaon units last week that have been giving the owners problems from day 1-the unit base model numbers are RN031180AA021AA. Wattmaster controls.
    Space temp reset control
    8...
  35. Replies
    15
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    1,575

    AH-HA!

    We were able to head back out to the job today and found the problem. One of our techs was checking out some wiring at a signal splitter and found that the input signal polarity was reversed. After...
  36. Replies
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    781

    Roger that-

    From what I gather, we're to use an altogether different relay because of this possible problem. By the way-where did you get that cool Mustard Man suit? That is off the chart cool! I'd like to see...
  37. Replies
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    781

    That's just it-

    One of the systems that this is happening to has had a new valve put in. We're going to be replacing all of the control relays in each of the modules; the thought is that there might be some...
  38. Replies
    15
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    1,575

    Thanks for the heads up-I'm going to look for...

    Thanks for the heads up-I'm going to look for that now. Is that Johnson program similar to McQuay Service Tools in that it will allow you to view/change parameters?
  39. Replies
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    1,575

    We're outside Chicago. I did look into the...

    We're outside Chicago. I did look into the program, and we do have it at the shop. The problem is, when we download it onto our laptops, it causes our McQuay Service Tools program to go haywire.
  40. Replies
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    1,554

    I've come to believe that some customers must get...

    I've come to believe that some customers must get a reduced rate on their phones after 3:30 on Friday afternoon. I can't begin to tell you how many calls I've seen come in late Friday, only to find...
  41. Replies
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    1,575

    Negative as to the HVAC Pro. Is that a Johnson...

    Negative as to the HVAC Pro. Is that a Johnson program? If it makes interfacing easier, I'd like to get my hands on it.
  42. Replies
    15
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    1,575

    DA control

    You're absolutely right-the DA controller should be able to reverse it's signal. I've gotten into the setup and tried that, but still had no luck. I'm heading back out to the job next week to find...
  43. Replies
    7
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    1,573

    Airstack Info

    I tried to upload a document for you here, but it was too big. Shoot me your email address and I'll send it to you direct. I also have wiring diagrams I can scan and send to you if that would help....
  44. Replies
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    1,244

    Just thought of something-if it's the Johnson...

    Just thought of something-if it's the Johnson keypad control (not a Carel type), make sure someone hasn't flipped the remote switch option at the control. That would make it go blank as well.
  45. Replies
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    1,573

    pco2 manual

    I attached the manual I have-hope this helps.
  46. Replies
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    781

    Multi Stack MS25 (10/15) issues

    Anyone have any experience with the MultiStack MS25 (10/15) heat pump? I've got a situation where a unit starts up normally (initializes in cooling mode for 30 seconds, then switches to heat), but...
  47. Replies
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    652

    I'd agree that programmable stats would be the...

    I'd agree that programmable stats would be the most practical way to go. A BAS offers a lot of bells and whistles, but always remember that at the end of the day, it's really a PROPRIETARY...
  48. Replies
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    1,244

    Will Smith

    Actually, McQuay pressurizes the control compartment to help prevent moisture problems from occurring.
  49. Will Smith

    Not familiar with how Trane utilizes them, but as far as MultiStack goes, they are as good as they are engineered. As long as the pumping circuits are sized right, Multistacks are as good as they...
  50. Replies
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    6,775

    will smith

    Guys-
    I apologize for sounding off like I did in my post. A friend of mine just went on his third tour overseas (a black friend-more brother to me than my own), and I think I was reading into...
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