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    My apologies for the poor spelling and I did...

    My apologies for the poor spelling and I did figured it out. Not sure what it is about asking a question on a forum that compels you (me in any case) to dig harder.

    I was going about it from...
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    Delta Controls Fahn Fail Alarm

    I have run into a dead end on setting up a Fan Failure Alarm for fans that are on a schedule (most of ours are 24 x 7 and those I have been able to program).

    How do you reference the RUN command...
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    Asking myself as well as manager who is very good...

    Asking myself as well as manager who is very good and asks the same questions I do. Have not come up with a plausible failure path though we are not much for coincidences either.

    Mix of a 23...
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    R22 to R422D Mechanical Lock Up

    I have seen the issues with the various leaks associated with the use of R422D (and the caveats for using it)

    Have others seen specifically a mechanical lockup as a result of a conversion with...
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    Vitodens Cold Temp Boost

    While I am a pretty decent technician, I am spread out over 4 or 6 areas from DDC to Power Generation and cannot focus on one area. Condensing boilers are not something we deal with so little...
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    I should add this was a last minute change in the...

    I should add this was a last minute change in the project, so it was done on the fly and not part of the original setup and layout.
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    Correct for float levels in a tank. Only two of...

    Correct for float levels in a tank. Only two of them I am currently (pun) concerned with, but there are a total of 4. The two I am dealing with that are causing the immediate problem are the Full...
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    I assume you have not seen a 24 VAC xformer wired...

    I assume you have not seen a 24 VAC xformer wired per the description ? Seems like it makes things register in the GSC even if no reference (no idea what the GCS voltage to its dry contact using...
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    Got it on the dry contact. There is no wire...

    Got it on the dry contact.

    There is no wire from the common thatís between the points (7-5 and 7-6) to the switches.

    They ran 24 volts to the common terminal on the switches (float system) ...
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    Network 8000 GCS Question

    I could find no info running a search so.......

    I am working on a DI signal issue into a GCS module.

    Two separate DI inputs are not showing as closed, confirmed the switch is closed, xformer...
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    I have run across similar problems, once in a...

    I have run across similar problems, once in a great while it turns out to be the flame safety (Honeywell in my experience).

    I once traced it down to a relay inside that was sticky. they can be...
  12. That should prove to be interesting. Whole...

    That should prove to be interesting.

    Whole different dynamic in having a magnetic field between the two parts. A strong filed might not let current do that, but they have to be pretty close...
  13. The reality is Inverter Duty does NOTHING to...

    The reality is Inverter Duty does NOTHING to address this issue. So called Inverter Duty is an insulation specification, not the shaft current problem. Yes there is some winding stuff as well,...
  14. And I have had all units that VFDs are on have...

    And I have had all units that VFDs are on have bearing failures.

    I will accept one mans failure is a problem another man has not found yet, or realized the underlying cause.

    I have not let one...
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    I checked and its KHZ for sure, not Hz. Hz would...

    I checked and its KHZ for sure, not Hz. Hz would be nice, no problem then.

    Irritating issue is that they do make perfect sine wave machines, UPS and Electronic Grounp Power Units. The wave...
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    Frankly I do not remember. I have 3 different...

    Frankly I do not remember. I have 3 different drive MFGs, and they all differ.

    I recall 2KHZ (I may have the hz wrong), the last actually look at that was two years ago, and my memory for...
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    I don't know how easy this is to work with, but...

    I don't know how easy this is to work with, but its also an option if you choose to go with just the shaft grounding.

    http://www.inpro-seal.com/CDR/mgs.html

    While I don't like the idea as a...
  18. I would not touch a VFD driven device unless the...

    I would not touch a VFD driven device unless the mfg discuses what they have done to stop the bearing arching in their literature. While some will argue, my experience is that all new VFDs...
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    If you can identify those its certainly a good...

    If you can identify those its certainly a good solution for harmonics. The bearing arching (and associated grease degradation/burn up) falls into a different realm.

    One suggestion was to put...
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    The problem I ran into was that the Aegis system...

    The problem I ran into was that the Aegis system did not mount neatly to the motor I got it for.

    It was going to require a drill and tap, and there was going to be a very close clearance between...
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    You seem to be ignoring the information that...

    You seem to be ignoring the information that often shaft grounding does not work, and seldom by itself.

    So, what is your time worth?, or if you call in an outside contractor to do the bearing...
  22. Not to worry, there are items to discuss. For...

    Not to worry, there are items to discuss.

    For us, we are closed loop, so that pretty well removes that as a concern, though the Clima Cool (which I am not endorsing, though it is on the list due...
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    Frankly I have worked through the issue. While...

    Frankly I have worked through the issue.

    While costly, buying the Sealed Ceramic Hybrid Bearings from SKF/MRC has resolved the problem.

    Supposedly grounding is needed as well, however, at...
  24. Thread: PMI UPGRADE PATH

    by RC20
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    Thank you, a nice professional presentation with...

    Thank you, a nice professional presentation with good support of the view point.

    Each situation and facility has different aspects, and a one view answer does not meet those.

    1. Is it new...
  25. Thread: FX-40 or NAE

    by RC20
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    I am starting at the end, so yours is the last...

    I am starting at the end, so yours is the last one read, will go back and read the others.

    Thank you, its an excellent description/breakdown from my standpoint. It gives me a clear idea of the...
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