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Type: Posts; User: clydemule

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  1. Replies
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    You would have to send it in. We are moving to...

    You would have to send it in. We are moving to the new Carel in a few months that can take a USB drive.

    We send you a newer one first, so you aren't dead in the water waiting to get the...
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    Hi Beezelbub! (didn't want to give out your real...

    Hi Beezelbub! (didn't want to give out your real name). Sorry I didn't call. It was hot and humid and was trying to get out of there!

    This was last summer. It was kind of funny running into your...
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    4,737

    Sorry for the late response. I used to be a heavy...

    Sorry for the late response. I used to be a heavy duty HVAC-Talker, haven't lurked here for a while. Was searching for something and this thread came up. I hate to hear that anyone ever has a serivce...
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    Are there check valves on the discharge? I know...

    Are there check valves on the discharge? I know when they first came out there was internal debate on whether or not they were needed but we put them on anyway. Always have used them since.

    At...
  5. RTA/C Theory of operation on the evaporator

    Accidentally put this in the reefer forum earlier. Meant to put it here.

    To all the Trane RTA/C experts.

    I had an RTAC155 in my shop (we do equimpent finishing and were installing a pump...
  6. RTA/C Theory of operation on the evaporator

    To all the Trane RTA/C experts.

    I had an RTAC155 in my shop (we do equimpent finishing and were installing a pump package) and I was looking at the barrel and reading the IOM about how the...
  7. Thread: Artichill???

    by clydemule
    Replies
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    1,477

    I have heard good and bad about all the brands...

    I have heard good and bad about all the brands mentioned (expect the air stack) for MR applications. Arctichill mostly good, Filtrine mostly bad. With most things, poor engineering of the system or...
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    20 mesh has BIGGER holes than 40 mesh.

    20 mesh has BIGGER holes than 40 mesh.
  9. Replies
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    Copeland/Bitzer Screw Compressors

    Looking for opinions, experiences, etc. with Copeland/Bitzer screw compressors. I am looking specifically at the SCA2/CSH (copeland model/bitzer model) R-134a optimized models.

    These can either...
  10. Replies
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    2,725

    Mech Head- Keep it simple, you may be able do...

    Mech Head-

    Keep it simple, you may be able do this with one pump.

    You haven't given enough information to size the chiller. The previously provided calc that came up with 32 tons was incorrect....
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    You may want to check out other engineered...

    You may want to check out other engineered thermoplastics like polypropylene or ABS (not sewer ABS) that are designed for the low temperatures of a chilled water system.

    Also make sure you look...
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    Beating a dead horse...

    The munters IceDry is the way to go.

    There are other ways to make it work I guess, but I firmly believe this is the best way.

    The dewpoint is the key. If your depoint is below 30F a desiccant...
  13. Replies
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    2,951

    Electrical Power- Brake HP required by the shaft...

    Electrical Power- Brake HP required by the shaft of the pump and electrical losses in the motor. (not really the official term but close enough?)

    In an 80% efficient motor, the 20% inefficiency...
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    2,166

    Carlyle publishes information in their...

    Carlyle publishes information in their application guide on their screw compressors what is required when using a VFD.
  15. Water Cooled Condenser-Cold Condenser Water

    I am working on laying out a system for meat cutting plant. Everything is mostly old crap that is falling apart. The aging room cooler and drip cooler room have evaps pulled out of rail cars.

    I...
  16. Replies
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    Call: Absolute Graphic Technologies...

    Call:
    Absolute Graphic Technologies
    909-597-0713.

    Same guys. Wolfdog will probably chime in in a minute.
  17. Replies
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    www.agt-usa.com www.thermalcare.com...

    www.agt-usa.com
    www.thermalcare.com
    www.arctichill.com
    www.coolantchillers.com
    www.tjsnow.com
    www.imscompany.com
    www.drakerefrigeration.com
    www.motivair.com
  18. Replies
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    1,568

    Good luck fishing. Where are you going?

    Good luck fishing. Where are you going?
  19. Replies
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    1,568

    No. Feedback doesn't oppose the signal, it tells...

    No. Feedback doesn't oppose the signal, it tells you (gives you feedback) as to the consequence of your control action. If you turn on the A/C (control action) you get the feedback that shows the...
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    1. Offset- This is the difference between the...

    1. Offset- This is the difference between the setpoint temp and actual temp. Air is 75 F and the setpoint is 70 F, your offset is 5 F

    2. Dead band is not the variable. In the above example the...
  21. Thread: 9 lead motor

    by clydemule
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    1,555

    I had a customer once who replaced a pump motor....

    I had a customer once who replaced a pump motor. They call me to say it was running slow, and there was a brown stripe around the motor:eek:.

    The ranch foreman (this was when I was in the ag...
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    I think your best bet would be Automation Direct...

    I think your best bet would be Automation Direct (www.automationdirect.com).

    The make several small fixed I/O plcs for great prices. They also have a wide selection of input screens.

    They...
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    Thanks for the ideas guys. FYI the application...

    Thanks for the ideas guys.

    FYI the application is for new seed storage facility. 27,000 ft^2 split into 3 rooms. 2 are 59 F @ 30% rh (28 F DP) and the other is 39 F @ 30 % (12 F DP!). I have 12-14...
  24. Replies
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    Defrost Control

    Are there any methds out there for defrost control, other than using a timer?

    I guess I am not really looking for defrost control as much as I am interested in "frozen coil" detection. This is a...
  25. Replies
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    They are pretty common in dairies where they use...

    They are pretty common in dairies where they use them for pre-heating wash water. They just look like a big water heater.
  26. Replies
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    A lot of this stuff is pretty common in...

    A lot of this stuff is pretty common in industrial and specialty chillers. There are a few VFD driven compressors in the printing business. I personally like the digital scroll over VFDs (on...
  27. Replies
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    Poll: NEVER MIND. I was too lazy to get up and get...

    NEVER MIND.

    I was too lazy to get up and get one of my PT charts so I just used the table in the Heatcraft Engineering manual. I have the PDF on my computer.

    They have the R-12 values listed in...
  28. Replies
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    6,516

    Poll: Thanks for the discussion MTech. I have a...

    Thanks for the discussion MTech. I have a question even though I already answered the poll.

    I can't make the CI/CO settings jive with the case temps you have referred to. It seems like the...
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    I mostly agree with Dow, expcet that I think when...

    I mostly agree with Dow, expcet that I think when the fan runs backwards it is not equal CFM as to when it runs forward. Depends on the fan I guess.

    However, the reduced flow would probably not be...
  30. Replies
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    Based on the explanation you received, I can see...

    Based on the explanation you received, I can see why you thought it was nuts!

    I tihnk what they were trying to explain is how a users can create macroblocks, which are basically subroutines built...
  31. Replies
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    Just about every PLC manufacturer works the same...

    Just about every PLC manufacturer works the same way. They sell controllers, and software to design an operating program. If you have a Widgetmaster 3000 that is acting up that is controlled by an...
  32. Replies
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    I have hardly built the same thing twice. ...

    I have hardly built the same thing twice.

    www.johnsonthermal.com/JTS

    Only problem is that "small scale" and "UL listing" don't always go together well!
  33. Replies
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    Skotup, I am with you man. The senseless...

    Skotup,

    I am with you man. The senseless destruction these ignorant refrigeration techs has cause is inexcusable, and unfortunately irreversible.

    Now maybe I am a bit biased sicne I am in the...
  34. Thread: Dry Contact

    by clydemule
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    984

    It means that the contact has no voltage attached...

    It means that the contact has no voltage attached to it. This contact can then be used as an input for a system separate than the one with the dry contact, and can be used with a separate power...
  35. Thread: equation

    by clydemule
    Replies
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    3,158

    Hi John, nice to see you around here again. ...

    Hi John, nice to see you around here again.

    Like I stated in my earlier post, I can only hypothesize about the overall reliability. The first chiller I built using these was at the end of 2002....
  36. Thread: equation

    by clydemule
    Replies
    15
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    3,158

    I can't speak to the reliablity, but the digital...

    I can't speak to the reliablity, but the digital scrolls work well. I have used them in process chillers. They are no more or less noisy than the regular scroll.

    The unloading system basic takes...
  37. Replies
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    Is this a 10 or 15 ton?

    Is this a 10 or 15 ton?
  38. Replies
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    3,371

    Cold Drives: Is the drive actually turning...

    Cold Drives:

    Is the drive actually turning off? I have not heard of that problem but I have not been in the loop for a couple of years. Originally the 1055/15MED used a GE/Saftronics/Teco VFD....
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    mekanik: Thanks for your input. I will explain...

    mekanik:

    Thanks for your input. I will explain the two things I am comparing further:

    1. Design one- Single Compressor (let's say 30HP) with a VFD that ramps up and down to maintain a set...
  40. Replies
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    992

    So I am working out at this plant where there is...

    So I am working out at this plant where there is another mechanical contractor working in a cold storage room putting in a new system.

    The room is a 6,000 ft2 room for storing seeds. It is kept...
  41. Replies
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    12,931

    I think this could be explained using Andy's...

    I think this could be explained using Andy's simple example about the max. theoretical subcooling.

    If you have a 45F suction temp and 55F LWT (sorry, I'm a chiller guy) the most superheat you...
  42. Replies
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    Is it me or does the truck say "lamo" on the side?

    Is it me or does the truck say "lamo" on the side?
  43. Replies
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    Didn't we just have this discussion a month or...

    Didn't we just have this discussion a month or two ago? I think I remember ranting about it.

    Good info rocket.
  44. Replies
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    I think you mean Norcold. It is an AC/DC/propane...

    I think you mean Norcold. It is an AC/DC/propane fired absorption fridge. Like they use in RVs. Another common brand is Dometic.

    Repair is done by taking out the cooling unit and getting another...
  45. Replies
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    Cupronickel will handle the saltwater, but I...

    Cupronickel will handle the saltwater, but I would guess theat the lobster owners would say no way.

    You can get marine grade brazed plates from flatplate @ Flatplate.com.

    They are made from...
  46. Replies
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    1,010

    It is called a fusible plug and you need to get a...

    It is called a fusible plug and you need to get a new one. It is desgned to melt at a predetermined temperature. Like a one time use pressure relief.
  47. Replies
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    100% RH means fog or clouds, but not necessarily...

    100% RH means fog or clouds, but not necessarily rain. Rain only occus when small droplets of water become large enough and heavy enough to fall.

    Most rain starts of as ice crystals higher in the...
  48. Replies
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    But you have to know WHAT to cut and WHERE to...

    But you have to know WHAT to cut and WHERE to paste it.



    Retards, little old ladies and people who actually need to get work done.
  49. Replies
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    Re: Engineered Refrigeration Systems......

    Dude, you know everything.

    Sounds like you know where all the bodies are buried too.

    Always fun to read your posts.
  50. Replies
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    Is there a liquid line heat exchanger? This will...

    Is there a liquid line heat exchanger? This will affect your super heat reading if you are reading it at the compressor an not the outlet of the evaporator. These are fairly common on process...
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