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Type: Posts; User: jemawalton

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  1. Replies
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    Go for what you want. If you don't like it move...

    Go for what you want. If you don't like it move on. The skills you pick up on one or the other will translate to the next oportunity. Don't know of a company that does both though.
  2. Replies
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    12,935

    When you say trouble, do you mean that they need...

    When you say trouble, do you mean that they need help with electrical troubleshooting or with actually reading the diagram symbols and tracing the circuit?
  3. Replies
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    2,374

    Who needs a heat pump thermostat? A handy switch...

    Who needs a heat pump thermostat? A handy switch like this will solve the problem! Too bad Billy Mays is not around to market it.
  4. Not to be rude but I think you need to spend some...

    Not to be rude but I think you need to spend some more time researching and reading on this site. All the questions you asked have been answered several times over here. Use the search function and...
  5. Thread: OH DAMN IT!

    by jemawalton
    Replies
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    2,391

    WHEW! Glad you cleared that up for us! Please...

    WHEW! Glad you cleared that up for us! Please let me know which brands you think aren't crap so I can post some pictures of them in less than flattering circumstances. They all break and if they...
  6. I can't confirm the 90 day money back trial but I...

    I can't confirm the 90 day money back trial but I can confirm the Dolphin being removed from several sites around here after about a year due to poor performance.
  7. Thread: Trane RTAC

    by jemawalton
    Replies
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    1,892

    Some Trane chillers use a brazed plate as well.

    Some Trane chillers use a brazed plate as well.
  8. Thread: Trane RTAC

    by jemawalton
    Replies
    12
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    1,892

    He said he wasn't bright.

    He said he wasn't bright.
  9. Thread: Trane RTAC

    by jemawalton
    Replies
    12
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    1,892

    Digit 15 is "F" which indicates a standard evap,...

    Digit 15 is "F" which indicates a standard evap, not remote.
  10. Replies
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    2,767

    Filter is supposed to be changed within the first...

    Filter is supposed to be changed within the first year of startup but it never does. But you are right, I have found the line about being a "lifetime filter" to be less than accurate on more than...
  11. Replies
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    3,347

    Thats helpful! Funny and original too. An all...

    Thats helpful! Funny and original too. An all around insightful, high quality post that makes this forum that much better! Bravo!
  12. Thread: RTAA340

    by jemawalton
    Replies
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    1,660

    Can you tell that the unload solenoid is in fact...

    Can you tell that the unload solenoid is in fact energized? (Small screw driver works nicely for this) What is the piston pressure doing while the machine is trying to load? Serial number on the...
  13. Replies
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    I wonder if that same company gets to profit from...

    I wonder if that same company gets to profit from changing compressors out after they take a crap from eating too much liquid refrigerant.
  14. Replies
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    Y-delta or across the line start?

    Y-delta or across the line start?
  15. Replies
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    867

    If you have proper voltage across all three legs...

    If you have proper voltage across all three legs and are not seeing an amp draw on the second leg, combined with poor meg readings, sounds like an issue with the compressor itself. Does the...
  16. Replies
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    You are correct. As the air flow increases, the...

    You are correct. As the air flow increases, the VDC signal also increases. When you recalibrate the VAV, what should happen is the damper should drive completely closed, it will then measure the...
  17. Replies
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    867

    Did you meg the compressor with the motor leads...

    Did you meg the compressor with the motor leads on or off? Issues with the motor leads in the conduit can cause erratic meg readings. Does it trip on start-up, or while running? Y-delta or across...
  18. Replies
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    1,275

    I know that Marley will package their tower in...

    I know that Marley will package their tower in pieces. They should be able to give you component sizes so you can figure how best to get them to the roof. I am not sure if Marley feild assembles...
  19. Thread: ladders...

    by jemawalton
    Replies
    32
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    8,712

    On a serious somber note, one of our brethren die...

    On a serious somber note, one of our brethren die after falling off a six foot ladder while overhauling a chiller last week in Virginia. A SIX FOOT LADDER! I don't know the details and didn't know...
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    I did. I also noted that the cooling towers...

    I did. I also noted that the cooling towers pictures later in the article is accurate but I have yet to see a hyperbolic tower used for comfort cooling.
  21. Replies
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    1,266

    How Stuff Isn't Supposed to Work

    OK, so just for the heck of it I wanted to learn how air conditioners work since I wasn't sure, The last picture on this page caught my eye. Is that a box fan on top of that RTU? Hope that isn't...
  22. Replies
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    1,483

    Flow the whole joint and not just where the leak...

    Flow the whole joint and not just where the leak is or you will end up chasing the leak from one spot to another.
  23. Replies
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    HA HA HA HA! That is too funny.

    HA HA HA HA! That is too funny.
  24. Replies
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    447

    The IOM should give you guidelines on how deep to...

    The IOM should give you guidelines on how deep to make your P-trap.
  25. Replies
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    4,523

    Depends on the voltage. Most of the 5 ton units...

    Depends on the voltage. Most of the 5 ton units I see are 460V 3ph and 15 amp service sounds about right.
  26. Replies
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    1,361

    Do you know if the system ever got balanced in...

    Do you know if the system ever got balanced in the first place? If it has been a problem since start-up, I wonder if it was set up or even designed correctly in the first place. Might want to bite...
  27. Replies
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    1,293

    That was funny! Having a bad day and needed that...

    That was funny! Having a bad day and needed that laugh. Thanks.
  28. Thread: SWUD help!

    by jemawalton
    Replies
    16
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    2,166

    Just to add more info, once you have waited 30...

    Just to add more info, once you have waited 30 min with power off at the disconnect, once you power it back up, you can stop and start the unit with the rocker switch all day long with no problems. ...
  29. Thread: SWUD help!

    by jemawalton
    Replies
    16
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    2,166

    The saga continues. I find myself on this...

    The saga continues. I find myself on this beautiful Saturday morning once again staring at this machine. The unit typicaly runs 24/7 so it is only a problem when the unit gets shut down for...
  30. Replies
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    4,565

    Have you checked the evap? Drain the water, pull...

    Have you checked the evap? Drain the water, pull the head and leak check it.
  31. Sounds like either brown algae or it is coming...

    Sounds like either brown algae or it is coming from somwhere other than the tower itself. As the others stated, get your water treatment company involved.
  32. Replies
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    6,211

    I agree. Leak check the machine. Confirm the...

    I agree. Leak check the machine. Confirm the charge.
  33. Replies
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    1,805

    A lot of open ended questions. I'll give it a...

    A lot of open ended questions. I'll give it a shot.


    1. To improve delta T on the secondary side, slow the water down. Thats the easy answer but you have a million other things that have to be...
  34. Replies
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    Do you have a model and serial number? That...

    Do you have a model and serial number? That would help. If it is a Trane, make sure your ejectors are working properly and are open. Is the unit running unloaded for long periods?
  35. Replies
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    Sump heaters and heat trace the pipe that is...

    Sump heaters and heat trace the pipe that is exposed. Thats my vote.
  36. Replies
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    1,444

    Your local Trane office should have the start-up...

    Your local Trane office should have the start-up sheets. Not sure what it takes to aquire them. There may be a copy in the paperwork provided when the unit was comisioned somewhere at your...
  37. Replies
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    1,720

    Can you put a gauge on the liquid line with a...

    Can you put a gauge on the liquid line with a thermocouple and monitor subcooling? If you know the design, you can see a loss of refrigerant here before you see bubbles in the sight glass.
  38. Replies
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    1,262

    Just my two cents but I don't think I have seen...

    Just my two cents but I don't think I have seen an short cycle timer that kept the compressor running. Granted I don't see too many Carrier units but I would want an anti-recycle timer to keep my...
  39. Replies
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    1,468

    I hope the coil got split and then the LOW...

    I hope the coil got split and then the LOW pressure switch that was installed on the discharge line got replaced with something that might be more effective at protecting the compressor from high...
  40. Replies
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    1,208

    I sent you the wiring diagrams for the SWUB. ...

    I sent you the wiring diagrams for the SWUB. Hope it is what you are looking for.
  41. What is the design of the room and the unit?

    What is the design of the room and the unit?
  42. Sounds like a Dunham-Bush air cooled condensing...

    Sounds like a Dunham-Bush air cooled condensing unit.
  43. Replies
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    I think that is part of the reason for recovering...

    I think that is part of the reason for recovering the entire charge and puting in virgin gas, you can't know. Leak rate, state of the refrigerant as it leaked, temp. Way to many variables to be...
  44. Replies
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    1,125

    I've never tried it but I have wondered what...

    I've never tried it but I have wondered what would happen if you put two pumps in series when trying to pull low numbers. If you put two pumps, two stage each in series would you have a four stage...
  45. Replies
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    647

    I usually valve the compressor off and pump it...

    I usually valve the compressor off and pump it throught the service valve at the bottom of the oil sump. No matter how you do it, have the rags and bucket ready when you pull the fittings, you will...
  46. Replies
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    Make sure you have enough oil in the sump. If...

    Make sure you have enough oil in the sump. If you are running low, it won't take much cold oil on start-up coming back to drop the sump temp pretty quick. And if you started it when you reached the...
  47. Thread: SWUD help!

    by jemawalton
    Replies
    16
    Views
    2,166

    Thanks for the info. I ended up powering the...

    Thanks for the info. I ended up powering the unit down for about 20 minutes and cleaning years of dust out of the controller to inspect the ribbon cables. I found no smoking gun there but when I...
  48. Thread: SWUD help!

    by jemawalton
    Replies
    16
    Views
    2,166

    SWUD help!

    I have a SWUD 058 / T96H00976 that is going off on supply fan overload failure immediatly upon start-up. The fan has no VFD, voltage good, contactor good, CTs ohm out perfect, fan runs fine when...
  49. Replies
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    2,549

    Neat units but can be a pain to work on due to...

    Neat units but can be a pain to work on due to compact design. If you get some manuals in ENGLISH, I would love to get a copy. Parts can be difficult to come by.
  50. Replies
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    Electricians usually don't label stuff telling...

    Electricians usually don't label stuff telling you what a switch services but rather where the breaker (or bracker) is located to kill that circuit.
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