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  1. Replies
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    You might need a different language translation...

    You might need a different language translation tool.

    That last response didnít make any sense.
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    Yes, I was being facetious. If that were the...

    Yes, I was being facetious. If that were the case, the leak would be visually apparent, but he would still be required to leave the room to find it! LOL!
  3. go through all the wiring, and connectors, pull...

    go through all the wiring, and connectors, pull all the connectors and inspect pins, pull all the staycons, if any are loose, cut and replace. I had one like that a few years ago. same deal,...
  4. Yeah, I started with the TIF....actually, I think...

    Yeah, I started with the TIF....actually, I think I still have it. Got tired of forgetting to turn it off, and having to change batts all the time. Went to the inficon because it was a sturdy...
  5. Tell that to inficon

    Tell that to inficon
  6. I need one that remembers where it was after it...

    I need one that remembers where it was after it shuts off.

    I believe the only one that does that is the field piece, but it's wireless.
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    Thatís funny, how are you supposed to clean them...

    Thatís funny, how are you supposed to clean them when they are between the pump discharge and the check valve!? Usually the check valve is the triple duty valve.
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    Except that the OP says he confirmed there are no...

    Except that the OP says he confirmed there are no leaks by visually inspecting the pump rooms.

    With commercial work, Many times, the problem doesnít exist in the room with the problem.

    I...
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    I agree that 1/32 is too small. Have a site that...

    I agree that 1/32 is too small. Have a site that had a basket with that size holes, and weíd get service calls every month or so, and have to clean the baskets. Changed to 1/8Ē and problems...
  10. One problem I see would be system design. If...

    One problem I see would be system design.

    If you have a system thatís poorly designed, and doesnít flow correctly, the valves closing still may not push water to the ones that need it.

    Or...
  11. 78* discharge isnít going to heat the space to...

    78* discharge isnít going to heat the space to 78*. And like was said, just cause thatís the set point, doesnít mean itís reaching that.

    And yes, we need more information....what kind of AHUís...
  12. oh, I guess I missed the heating mode only part!...

    oh, I guess I missed the heating mode only part! LOL!

    well, could be excessive CFM combined with outside air damper too far open. when you did the air balance, what was your CFM and how did it...
  13. If you don't have the low ambient kit installed,...

    If you don't have the low ambient kit installed, that is your problem.

    you will have to find out if the low ambient kit was specified in the bid, AND actually ordered. If it was, and it isn't...
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    Get all the manuals and spec sheets for each...

    Get all the manuals and spec sheets for each individual component, then draw out the piping. Compare it to the perceived sequence of operation.....usually the issue pops out at you.
  15. your model number is conflicting with some of the...

    your model number is conflicting with some of the marvair nomenclature. I can't tell if you have the manual damper or, the motorized 2 position.....also, not sure if you have the low ambient kit.
    ...
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    I just played that for my 6 year old daughter. ...

    I just played that for my 6 year old daughter. Sheís just now grasping reading, so the play on words was hellarious to her!! Good times!!
  17. He said 35-40*. I bet what you consider low...

    He said 35-40*. I bet what you consider low ambient is 60*!! LOL!!
  18. it's gonna be hard to tell what's going on. ...

    it's gonna be hard to tell what's going on. combined with the low ambient conditions, the change in fan speed will change all of your numbers.

    I have blocked 90% of coils before with plastic or...
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    Have you gone through every single electrical...

    Have you gone through every single electrical connection, terminal strip, connector, etc.?

    First thing I do on intermittent issues, is check all the electrical. Sometimes even tracing wiring,...
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    This thread is from May of last year

    This thread is from May of last year
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    Inspect the inlet side of the coils, if they are...

    Inspect the inlet side of the coils, if they are trashed, recommend unit replacement. They are looking at 20-30k for equipment only, depending on size. BUT...life expectancy of a pool unit is only...
  22. Thread: duct question

    by 71CHOPS
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    Exactly! I would submit a new quote that will...

    Exactly!

    I would submit a new quote that will include the additional time, and materials needed to install what he wants. If he takes it fine, if not fine.

    Ask him he would mind selling his...
  23. Thread: BDP

    by 71CHOPS
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    Check with johnstone also, they recently told me...

    Check with johnstone also, they recently told me they can get a lot of oem parts, or crosses for carrier, Trane and a few others. Havenít tried them on it yet.
  24. Thread: BDP

    by 71CHOPS
    Replies
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    693

    Those specs sound like a liebert condenser fan...

    Those specs sound like a liebert condenser fan motor.....

    Take that info to United, they should be able to cross a ďstandardĒ motor kit.
  25. chillers can also be used to provide heating. ...

    chillers can also be used to provide heating. I'm not sure that yours is also a heat pump, you will have to contact the manufacturer for that information.
  26. Interesting for anyone curious, this homeowner...

    Interesting for anyone curious, this homeowner does in fact have a residential chiller. Itís made by a company called Standard Refrigeration. Itís called a Chiller Builder Kit. Her model is a DX 2...
  27. Replies
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    Sounds like your motor is toast. A 3 phase 460...

    Sounds like your motor is toast. A 3 phase 460 volt motor wonít have a winding to winding resistance of 80 ohms.

    Meg the motor.
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    I think I just threw up in my mouth a...

    I think I just threw up in my mouth a little......just a little.....
  29. Replies
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    If that is the correct tag, they are still motor...

    If that is the correct tag, they are still motor thermostats, and the motor should run without them.

    They are shown wired to the control circuit, not the motor windings, so your supply voltage...
  30. Download Tapatalk for pics, otherwise, Email is...

    Download Tapatalk for pics, otherwise, Email is in my profile, you can send them there.
  31. Replies
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    if the original motor did not have them, you can...

    if the original motor did not have them, you can leave them capped off.
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    looks like flex duct coming off the supply going...

    looks like flex duct coming off the supply going somewhere, and the furnace vent pipe is back behind that.
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    yeah man, look forward to seeing you in the back...

    yeah man, look forward to seeing you in the back room! We share tons of literature there!
  34. do you have a picture of the equipment, including...

    do you have a picture of the equipment, including any data tags?

    having a "chiller" in the sense of what we deal with in this forum, isn't what would be installed in a residential setting. ...
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    If you're gonna hang around here, you're gonna...

    If you're gonna hang around here, you're gonna need to have a thick skin.....especially in the open forums. get your post count up, and get your Pro membership. The open forums have rules that...
  36. always defer to the manufacturers installation...

    always defer to the manufacturers installation instructions. if it doesn't specify orientation, it can be installed any way, including flat.

    If it's already installed on a commercial job, I...
  37. Replies
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    depends on the motor. it could be a thermal OL...

    depends on the motor. it could be a thermal OL that opens on current or temperature, or it could be a thermistor to read the actual winding temp. prolly an OL, as motors that have thermistors...
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    Easy thing to do is first make sure the loop is...

    Easy thing to do is first make sure the loop is full. Shut the pumps off, wait about ten minutes, then go to the highest point in the loop, and open the bleeder.

    If you have ANY Air, the loop...
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    Can you safely use a wire tracer on a Comm loop?

    Can you safely use a wire tracer on a Comm loop?
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    That is likely a plate and frame subcooler.....or...

    That is likely a plate and frame subcooler.....or an economizer.

    Check the superheat on the suction line returning to the compressor.

    But yeah, canít help much without more information.
  41. Replies
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    Yeah, I suspect there is a T somewhere. The...

    Yeah, I suspect there is a T somewhere.

    The beginning of the loop has the 105ohm resistor, the end has a 105, and there are 2 105ís on the repeater.

    While troubleshooting wiring, I had...
  42. Replies
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    Comm 5 loop resistance

    I have a tracer system in a decent sized hospital. It has undergone several renovations, the most recent was almost 10 years ago when a cath lab was added. Iíve been told that Trane originally...
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    Does your amp draw directly relate your actual...

    Does your amp draw directly relate your actual 100% slide valve load?

    What does ďseem to beĒ mean?
  44. CV rating, as I understand it, is a ratio of...

    CV rating, as I understand it, is a ratio of pressure drop vs. flow rate across a valve.

    On smaller stuff, there is a ďcloseĒ relationship to actual ďGPMĒ, but you canít use it as a flow rate...
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    The only way way to Purge all grease from current...

    The only way way to Purge all grease from current motor bearings, is to remove the shields/seals and Flush the bearing of all traces of the original grease, then to repack the bearing with the new...
  46. But how do you use valve position for speed drive...

    But how do you use valve position for speed drive hz if you have a hospital with 10 different AHUís with 10 different load profiles?

    Or....better yet, a campus wide chilled water plant....with 10...
  47. So, whatís the cut off for pump stations? Iíve...

    So, whatís the cut off for pump stations? Iíve watched shows about super tall buildings where they need pendulum weights to counterbalance the building sway, and they need pump stations to keep the...
  48. I would want to see the DP sensor at the end of a...

    I would want to see the DP sensor at the end of a variable volume, constant pressure system.....also you need to have a small bypass at the end of the loop to maintain chilled or hot water in the...
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    this really smart guy I know once said something...

    this really smart guy I know once said something along these lines: It's like this, most of us aren't any smarter than each other, it's just that we're on different chapters in the same book....some...
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    It looks like the 102 series is being touted as...

    It looks like the 102 series is being touted as being able to actually increase the efficiency of a motor. Mobile has a bunch of stuff on their site.

    Technically, I doubt it would make any...
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