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Type: Posts; User: PJ's cool-aid

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    old miss-match Bahnson

    I am working on some old Bahnson units (1973) and have noticed the compressors are 60 ton 3E5R60 compressors turned by a 100 hp motor with a 100 ton condenser that is using 3 -30 ton valves per...
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    I found 4 SEO 70 in trane stock in Texas and...

    I found 4 SEO 70 in trane stock in Texas and bought all 4. I was told last year that there were none. but someone who took the time to look found some on the shelf. But I think they were all that...
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    Sensors checked out ok and the configuration was...

    Sensors checked out ok and the configuration was set for RTWA. Only thing I found was low refrigerent with a leak at the top of my EXV drive motor. One of the other service guys was charging it at...
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    That is the fault on the CLD is low differential...

    That is the fault on the CLD is low differential press..ckt #1
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    1,287

    The fault is low differential press. which the...

    The fault is low differential press. which the book says has to do with fan algorithm
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    RTWA question

    Can you get a low differential pressure fault on a RTWA?? I thought that was only on the air cooled RTAA, but I got the fault now on my water cooled machine?? I don't thinK some one has been changing...
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    Does it have a external oil filter? I had the...

    Does it have a external oil filter? I had the same issue, found out that the fitting on the oil filter is a retrictor that looks like a regular brass 90. I did not know that and I put new brass 90s...
  8. Jay remind me again not to open your links at...

    Jay remind me again not to open your links at work with others around. There goes my ethics policy for the year.
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    SEO-70 EXV

    From what I can find out there are no more SEO-70 to be had, Correct??
    What is the replacement plan and does anyone have a cutsheet on the retrofit? How tough a change over is it to the new valve?
    ...
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    rewards program

    I have been asked to develop an incentive program for a job site and I need input for the criteria to use. Does anyone do such a program and money is not the reward. it my be time off or tools who...
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    Thanks for the chart and the help.

    Thanks for the chart and the help.
  12. Replies
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    1,282

    Trane CSHA

    Is there a preferred soilder for brazing steel to copper on Trane's scroll compressor or any steel to copper.Never seems to look near as good as the factory job. Thanks PJ
  13. Thread: RTAA

    by PJ's cool-aid
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    RTAA

    the default for the condenser limit is 90% ( adjustable 80% to 120%) so I thought that was tranes prefered setting, so I will now bump it up and see how that works. Thanks
  14. Thread: RTAA

    by PJ's cool-aid
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    RTAA

    I have a RTAA080 that is running one circuit at current limit of 90% and circuit 2 at 45% but it is still 5 degrees from set point. Will the control not let it load both to the 90% current limit to...
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    5H60 ON 407

    NO LEAKS TILL it BLEW UP AND BLEW THE SHAFT SEAL. Also blew a bolt out of the hand hole cover,cracked a valve plate and blew the unloader diaphram. lost 240 lbs in about 8 minutes. the other...
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    5H60 ON 407C

    I have got two carrier open-drive 5h-60 that were changed from Mineral oil to POE and 407c installed. I have lost both of these compressor in the three months they have been running. Anybody changed...
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    Trane CRHM

    Thanks a lot, that clears up what I wanted to know. Do you have to have some special insider info. to get into these service bulletins.

    Thanks PJ
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    Trane CRHM200

    Can you tell by looking at the head weather it unloads one cylinder or the whole head(2). Paper work I can find said the model number tells how many cyls. are unloaded but what if heads get changed....
  19. Thread: RTAA

    by PJ's cool-aid
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    RTAA

    Does anyone have a link to the service bulletin for this change.

    Thanks
  20. Thread: RTAA

    by PJ's cool-aid
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    868

    RTAA

    Thanks but not the answer I wanted but the one I got. Thanks for the input, any idea how tough a retrofit it is??
  21. Thread: RTAA

    by PJ's cool-aid
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    868

    RTAA

    I was told today that the SEO 70 EXV was no longer available. this Trane RTAA chiller is a 99 model, I was told the replacement needed a new module and that I had to convert both circuits to the new...
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    RTAA phase reversal

    I have a RTAA-80 I am getting a phase reversal fault every couple of weeks. I check it reset it and every thing is find. no loose connection that I can find. ANY SUGGESTIONS. It happens at night and...
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    Trane CRHM-20

    on a Trane CRHM 20 does the unloader unload one cylinder or the whole head? Am I correct that carrier O6D and E and Copelands unload the whole head?

    Thanks
  24. Thread: RTAA-80

    by PJ's cool-aid
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    RTAA 80

    I DON'T TRY TO FIGURE THESE PEOPLE OUT we just lost a ten thousand dollar compressor and I guess the question came up. thank you for the input
    PJ
  25. Thread: RTAA-80

    by PJ's cool-aid
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    RTAA-80

    Does anyone know if Trane is recommending changing these chiller(RTAA-80) to a different refrigerant. I have a customer who wants to get away from R-22 can they be converted to 407 or anything else?...
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    load calculation for beach

    I have a restaurant setting on the water, are there any considerations for the extra humidity from the ocean air to consider in the load. the overall tonnage seems ok but the place just is not cool...
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    Johnson controls vs. union

    A jci friend of mine is being told that he is now union like it or not. what is the pro and con of the union and can they force him in. Is this the wave of the future here in n.c. I though in America...
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    RTAA 80 oil system fault

    Can someone explain how the oil temp being lower than the saturated condenser temp triggers a oil system fault. I'm getting a oil system fault, my sensors seem correct and my coil at the top was...
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    410 POE question

    I went to a 410 class the other day and the guy said that the POE oil would absorb water. OK , But that a vac. no matter how long or low couled get it out, Will a micron gage show that there is...
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    I would like to be hooked up with that RTAA...

    I would like to be hooked up with that RTAA troubleshooting manual thermpoot was talking about .can you e-mail me a copy.???

    Thanks
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    pneumatic design

    I have several systems but my most common problem is getting my OA damper in system and closing it when hot outside.I want the OA to function between 40 and 65 degree like a econimizer.
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    Pneumatic design

    I'm looking a pneumatic design book if one exist, not a text book but some sort of design book. I can find books that explain the individual parts and service of them but looking a book that shows...
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    SEER Question

    All I ever hear about is residential SEER ratings, what are the min. requirements( if any) is there for commerical and are they rated the same way. Thanks
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    I can study for the drug test but the psych.eval....

    I can study for the drug test but the psych.eval. could be trouble. Thanks for the help lets see if I can get into that site some how.
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    Trane info

    Is there a website or tech support line to get Trane service bullitins and insider info without working for a trane dealer. My job site has several Trane chillers I would like service info on. Thanks
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    RTAA term

    you are right i don't have it and not sure what it does????
  37. Replies
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    502

    RTAA TERM

    Trane RTAA080 in the setup menu what is Low. WTR. Temp EXV Gain Comp. enable or disable, and Lvg Wtr Contrl Resp Setpt=2-200. What do these settings do I don't see it in the IOM. I'm using this...
  38. Trane Chiller CGWD0404JOHAT101FFOUHG

    I have a CGWD040 that the pot that set the temp setpoint and delta t will not hold a set pt. the temp pot wants to drop to the lowest it can above LWCT or go to 60 nothing in between,same with delta...
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    SEI-70 sporlan

    the motor is fine the self test passed, I tore the valve motor down after replacement and found the gear worn and the nut slipping. seems to me there is no way to keep the parts lubricated the...
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    SEL-70 sporlan EXV

    I have two Trane RTAA chillers each have lost EXV motors with the same problem the internal worm screw was worn out and slipping not opening the valve as it should. This is a sporlan sel 70. sporlan...
  41. RTWA no comm,data not valid

    I replaced the 1u1 cpu board and the problem seems solved, and it is in a corrosive environment a tire plant.
    Thanks for the input
  42. RTWA no communnication,data not valid

    I have a trane RTWA125 that is displaying no communication,data not valid on the CLD I have checked cpm(1u1) board power,fuse and connections. a powerdown will reset it but it my work a couple of...
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    total test

    Any input on the accuracy of total lines moisture acid test kit. Are these little test tube telling the truth?
    Thanks
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    RTAA exv

    I am replacing the motor with what was on it( I think it is a sporlan seo-70) I tore apart the last one I replaced and the gear was dished out you could see where it had been slipping.
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    RTAA exv motor

    Anybody had problems with the gear in the exv motor stripping,motor passes eletrical test but does not push down the push rod on the valve so the systems just pumps down and goes off on low pressure...
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    pneumatic digital gage

    I'm looking for a digital gage to use for my pneumatic calibrations 0-30 psi. Just want to look high tech. with my old pneumatics
  47. RTAA memory error

    the book says ucm is operating on ROM default for all setup parmeters. check all setup parameters and continue to run chiller. the default overload setting must not match the dip swich settings. you...
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    Trane CGWD

    my bad, first letters are CGWD. The evaps are not in series and are water. This is much less complex that RTWA not as much eletronics (no EXV'S) not as large. Cir 2 runs about 50 psi higher than...
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    Trane CDWDO5O4CJOHAT101FFOUG

    Does anyone know why the condenser barrels are in series seems that this gives #2 circuit a much higher head pressure if #1 is running.also how can I disconnect one compressor contactor to disable a...
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    Trane CHHN

    Can someone explain the loading sequence of the CHHN 40. I have several RTAA chillers with this comp. I know the female is a open closed loader and the males modulate but at what percentage does...
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