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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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    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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    1,420

    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.
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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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    2,492

    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...
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    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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    1,973

    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...
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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.
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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
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    Good luck fishing. Where are you going?

    Good luck fishing. Where are you going?
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    1,407

    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
    Replies
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    1,472

    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...
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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...
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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.
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