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Type: Posts; User: trimble

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  1. Replies
    25
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    6,550

    How is your water flow? Do you have air in the...

    How is your water flow? Do you have air in the water loop?
  2. Replies
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    1,167

    All you need to do is isolate the compressor,...

    All you need to do is isolate the compressor, remove refrigerant from compressor, replace unloader gasket, snug bolts, evacuate compressor and open valves.
  3. Replies
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    1,202

    I just looked in Eagle and there is no SB-5 for...

    I just looked in Eagle and there is no SB-5 for the RTWA chiller. RTAA-SB-9 would be the closest service bullitan. The RTAA and RTWA use the exact same micro control system. I have RTAA-SB-9 in...
  4. Thread: Trane Chiller

    by trimble
    Replies
    21
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    3,396

    Check your saturated condenser temp sensor. This...

    Check your saturated condenser temp sensor. This could also cause your fans not to stage. Also, if the circuit is overcharged, you will subcool the refrigerant at the sensor and it will read low. ...
  5. Replies
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    2,329

    When you have less refrigerant flowing to the...

    When you have less refrigerant flowing to the evap, superheat goes up
  6. Replies
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    2,329

    You've got it backwards. If you lower superheat,...

    You've got it backwards. If you lower superheat, you are flowing more refrigerant which will lower your subcooling because you have less refrigerant stacking in the condenser.
  7. Thread: Trane Chiller

    by trimble
    Replies
    21
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    3,396

    There are several things that can cause this...

    There are several things that can cause this problem. When you say it is pumping down to 10Ē of vacuum, are you going by your gauges, or the UCM? You can have a bad saturated suction temp or comp...
  8. Replies
    4
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    700

    Hot Shot works alot better. I would post this...

    Hot Shot works alot better.

    I would post this in the refrigeration and ice making section.
  9. Replies
    10
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    1,455

    How much $ do these stats run?

    How much $ do these stats run?
  10. Replies
    5
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    1,527

    You need to go back with the OEM timer from...

    You need to go back with the OEM timer from Carrier. This is a multifunction timer. It controls part winding start contactors, it bypasses the oil pressure switch at start up, and it bypasses the...
  11. Replies
    5
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    1,527

    That electronic replacement timer has the exact...

    That electronic replacement timer has the exact same terminal designations as the old mechanical timer (A A1 A2 B B1 B2 D D1 D2 M1 M2 E E1 E2). You connect the wires to the exact same terminals as...
  12. Thread: Leak Search

    by trimble
    Replies
    15
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    1,642

    If you have a restriction, your head pressure...

    If you have a restriction, your head pressure will be low, not high, unless it is WAY overcharged. Need to know your superheat, subcooling, ambiant temp, and delta T. If you have a restriction, you...
  13. Replies
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    1,351

    http://www.bb-elec.com/product.asp?sku=485SD9TB&Pa...

    http://www.bb-elec.com/product.asp?sku=485SD9TB&PathId=10&altsku=rs485chartexternal

    I use this converter. It has the 9 pin serial connector so you can plug it straight into your laptop without...
  14. Replies
    13
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    1,351

    As Jhawk said, you can use a RS-232 to RS-485...

    As Jhawk said, you can use a RS-232 to RS-485 converter and it works great and is faster. I bought mine through the B&B Electronics website.
  15. Replies
    3
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    685

    Used it in several older cars with no problems.

    Used it in several older cars with no problems.
  16. Replies
    11
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    1,726

    I had the same problem with Trane TechView. I...

    I had the same problem with Trane TechView. I ended up buying a laptop with an onboard serial port.
  17. Replies
    12
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    2,048

    30GB-045: This is a 45 ton Carrier Flowtronic...

    30GB-045: This is a 45 ton Carrier Flowtronic Chiller.

    When pull down control is in effect, the unit will not load up anymore if the water temp is dropping more than 1 deg a minute.

    You MUST...
  18. Replies
    15
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    1,412

    I also agree, check the blower rotation. You...

    I also agree, check the blower rotation. You definitely have a problem with airflow across the evap. Did a piece of insulation get caught up in a set of turning vanes? Is a fire damper closed? ...
  19. Replies
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    1,378

    It is normal to have a 40# pres drop across a...

    It is normal to have a 40# pres drop across a large commercial air cooled condenser.
  20. Thread: orfice sizes

    by trimble
    Replies
    4
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    657

    You need to get the model number of the...

    You need to get the model number of the condensing unit and install the orifice that matches the condensing unit.
  21. Replies
    2
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    1,174

    Check for a restriction at the liquid line drier....

    Check for a restriction at the liquid line drier. Unit may have a factory installed drier on the liquid line inside the unit.
  22. Replies
    12
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    3,053

    Sometimes the problem is a loose connection where...

    Sometimes the problem is a loose connection where the wires are pierced at the plug on the 1U3 module.
  23. Thread: New Condenser

    by trimble
    Replies
    11
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    1,190

    The liquid line temp can't be lower than the...

    The liquid line temp can't be lower than the ambiant temp unless there is a restriction before the point you are taking the temp reading. You say you are taking the temp just past the liq service...
  24. Replies
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    1,448

    Sounds like my old Service Mgr.

    Sounds like my old Service Mgr.
  25. Flem, I didn't know that. I just started a 50...

    Flem,

    I didn't know that. I just started a 50 ton scroll last week and it had intellipak controls but it was manufactured in April, 04. I run TechView on Windows XP with no problems but obvously...
  26. CH530 is not in the scroll chillers at this time....

    CH530 is not in the scroll chillers at this time.

    What do you think you can do with the Kestrel key that will cause you to be fu**** with out it??? You can do everything you need in TechView...
  27. Thread: Carrier Coil

    by trimble
    Replies
    13
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    2,431

    I had a coil with stoped up orifices and it was...

    I had a coil with stoped up orifices and it was cheaper to install the TXV. Maby our local Carrier rep has a higher markup than yours??? I just used a standard Sporlan TXV from a non Carrier supply...
  28. Replies
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    2,007

    Thats a matter of personal opinion. Coils rot...

    Thats a matter of personal opinion. Coils rot out after about 5 years.
  29. Thread: Carrier Coil

    by trimble
    Replies
    13
    Views
    2,431

    Cut out the orifice manifold and install a TXV,...

    Cut out the orifice manifold and install a TXV, distributor, and new feeder tubes made out of ľ in copper tubing. Crimp the evap circuit inlet tubes over the ľ in tubing and braze in. Change the...
  30. Replies
    29
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    3,349

    Re: rtaa

    As mentioned many times above, the RTAA125 doesn't use an oil pressure differential switch for oil protection. It looks at the difference between saturated condensing temp and oil temp for oil...
  31. Replies
    8
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    1,584

    WHAT???

    WHAT???
  32. Replies
    14
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    2,722

    AGREED!

    AGREED!
  33. Replies
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    7,559

    If you haven't bid the job yet, and absolutely...

    If you haven't bid the job yet, and absolutely can't sell him a new chiller, do it on a T&M basis only.
  34. Replies
    54
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    7,559

    Just like everyone else has said, replace the...

    Just like everyone else has said, replace the chiller. You estimated 20 hours... your way off. Also, you need to estimate 2 compressor replacements. You still havenít told us if the chiller barrel...
  35. Replies
    14
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    2,722

    The compressor is not the problem since it is...

    The compressor is not the problem since it is obviously pumping. You didn't tell us if all the fans are turning in the right direction. Also, what is the subcooling and superheat? You said you...
  36. Replies
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    12,432

    WRONG! Trane Centrificals are made in LaCrosse...

    WRONG!
    Trane Centrificals are made in LaCrosse and Trane Screws are made in Pueblo Colorado. All Trane equiptment is made in the USA!
  37. Replies
    6
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    1,323

    Check to see if the black button's contacts are...

    Check to see if the black button's contacts are stuck closed. Had that happen to me once.
  38. Replies
    10
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    1,660

    What is your subcooling?

    What is your subcooling?
  39. Replies
    12
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    2,102

    Need to know return temp, supply temp, & ambiant...

    Need to know return temp, supply temp, & ambiant temp. If your ambiant and return temps are very high and your cond coil is dirty, you will overamp.
  40. Replies
    6
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    1,907

    http://www.hvacloads.com/talkpdf/VoyagerMicrocontr...

    http://www.hvacloads.com/talkpdf/VoyagerMicrocontrols.pdf
  41. Replies
    3
    Views
    1,580

    I believe that is 97.5% of the year it will meet...

    I believe that is 97.5% of the year it will meet the load requirements.
  42. Replies
    31
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    3,568

    If you can get a job at a manufacturer's shop,...

    If you can get a job at a manufacturer's shop, that would be great. I work for an independant Trane franchise and they treat me great. We have the best accounts in town and they give us plenty of...
  43. Replies
    31
    Views
    3,568

    Iíve done both residential and commercial work. ...

    Iíve done both residential and commercial work. I only do heavy commercial work now and would never go back. If it is so critical to get the chiller up and running, why doesnít the customer rent a...
  44. Replies
    11
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    1,921

    You CANNOT use a dual circuit 50 ton condenser...

    You CANNOT use a dual circuit 50 ton condenser with a single circuit evaporator. Simply tying the suction and liquid lines together won't work. You need to have an oil equalizer line between the...
  45. Replies
    2
    Views
    3,046

    http://www.hvacloads.com/talkpdf/VoyagerMicrocontr...

    http://www.hvacloads.com/talkpdf/VoyagerMicrocontrols.pdf

    This has all the info you need on these units.
  46. Replies
    48
    Views
    8,098

    Airwox is correct. Not all models of the early...

    Airwox is correct. Not all models of the early 30GB / 30GT chillers had EXV's and thermistors.
  47. Replies
    29
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    3,349

    Re: RTAA

    The RTAA 70 - 125 uses temperature differential between sat cond temp and oil temp. RTAA 130 and above uses an oil pressure switch.

    He doesn't have an oil pres switch.

    Make sure all fans are...
  48. Replies
    48
    Views
    8,098

    Those machines don't require a low pressure...

    Those machines don't require a low pressure switch. The saturated suction temperature thermistor will monitor suction temp and shut down the unit on low suction temp if low on charge. The micro...
  49. Replies
    12
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    2,550

    http://www.turbocor.com I've seen a demo on...

    http://www.turbocor.com

    I've seen a demo on this compressor. It is amazing. These compressors require NO OIL. You can buy this compressor and retrofit it into an existing machine.

    Trane is...
  50. Replies
    29
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    3,529

    On the newer Trane RTAA screws, there is a...

    On the newer Trane RTAA screws, there is a charging valve between the EXV and the evaporator. You can charge with liquid with valve wide open.

    [Edited by txtraneman on 06-26-2004 at 06:18 PM]
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