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  1. #79
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,204
    heres some more good reading.
    Attached Files Attached Files

  2. #80
    Join Date
    Nov 2011
    Location
    South Texas
    Posts
    60
    You are a mighty man of men good sir appreciate it bunches.

    The weather should be warmer on wednesday I'm goin to shut it down and see if I can make it fail the next morning while I have eyeballs on it,

  3. #81
    Join Date
    Nov 2011
    Location
    South Texas
    Posts
    60
    It finally did it while I was there went first thing in the morning about 4:00. Had the gauges on it and ammeter. As soon as she tried to start it failed right off.

    Trane first start syndrome as Graham mentioned early on. Going to wait until after the first and order the slide valve and do one circuit first.

  4. #82
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,008
    Quote Originally Posted by aggiechillertech View Post
    It finally did it while I was there went first thing in the morning about 4:00. Had the gauges on it and ammeter. As soon as she tried to start it failed right off. ..
    that is not 'first start syndrome'. what kind of time frame is 'failed right off'?

    1 second? 2 seconds? 2 minutes?
    It's tube brushing season...93% done (39.35 miles of tubing)...only 1,242 tubes to go!

    Original member of the Raccoon Brotherhood.

    EVERYTHING IS AWESOME!!!

  5. #83
    Join Date
    Nov 2011
    Location
    South Texas
    Posts
    60
    Sorry didn't clarify. It started circuit A fired 1 fan instantly then another 2 fans at 25 seconds of run time head pressure skyrocketed to 350 then at 390 it tripped on oil flow. I had 52 lbs of drop across the oil filter as it was happening. At about the same time it tripped it fired on the rest of the fans on that bank. My helper said it was pulling 102 amps instantly on start up. This whole process took about a minute start to finish. Yesterday morning it was off on high pressure. It takes turns one time it will be high pressure next time low oil flow.

    I shut it off completely let the pressures equalize and fired it up again and it worked perfectly. pressures averaging 65 and 205 with 60 degree water OAT 52 degrees. Ran about 15 minutes and system satisfied and shut back off.

    First time it did it was the first start of the morning I shut it down overnight to try and make it act up.

    Am I on the right track with this one or do I need to try again and get some more data.

  6. #84
    The prior posts suggest everything from cleaning coils ( especially that top inside area ) checking fan rotation and technical service bulletins from Trane. The local Trane branches and even Peublo Colorado will say the same thing. But not to pick this apart - is this a RTAA 200 or 240 ? I had read your post and I believe you said it was a 220 that did not have a remote barrel. You might want to take the others suggestions about Lip seal, wear ring,unloader piston ,and load and unload solenoids and start there.Most 100 ton compressors have Lip seal failures . When a motor starts at 100 % and pressure builds slowly it's a Lip seal.If it builds fast it's a wear ring. Another option is to get a factory rep. and /or price out the R-newal program for the customer.

  7. #85
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,008
    Quote Originally Posted by aggiechillertech View Post
    Sorry didn't clarify. It started circuit A fired 1 fan instantly then another 2 fans at 25 seconds of run time head pressure skyrocketed to 350 then at 390 it tripped on oil flow. I had 52 lbs of drop across the oil filter as it was happening. At about the same time it tripped it fired on the rest of the fans on that bank. My helper said it was pulling 102 amps instantly on start up. This whole process took about a minute start to finish. Yesterday morning it was off on high pressure. It takes turns one time it will be high pressure next time low oil flow.

    I shut it off completely let the pressures equalize and fired it up again and it worked perfectly. pressures averaging 65 and 205 with 60 degree water OAT 52 degrees. Ran about 15 minutes and system satisfied and shut back off.

    First time it did it was the first start of the morning I shut it down overnight to try and make it act up.

    Am I on the right track with this one or do I need to try again and get some more data.
    now THAT sounds like first start syndrome to me. redo the slide valve.
    It's tube brushing season...93% done (39.35 miles of tubing)...only 1,242 tubes to go!

    Original member of the Raccoon Brotherhood.

    EVERYTHING IS AWESOME!!!

  8. #86
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    1,848
    Quote Originally Posted by jayguy View Post
    now THAT sounds like first start syndrome to me. redo the slide valve.
    See post 52 ....guess he didnt believe me ??
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  9. #87
    Join Date
    Dec 2009
    Location
    Hotlanta GA.
    Posts
    214
    From post #52 "Time for some new hockey pucks."
    Just to clearify, a hocky puck in the TRANE arena woudl be a slide valve rebuild kit ???

    I LOVE THIS STUFF !!!!

    I have just spent the better part of my shift reading this incredible tread, as it moved along I would feel the frustration and jubilation of a problem talked about , and loked over by ALL kinds of minds, it is AMAZING !!!

    My compliments to all, for your imput and ability to move this item along to a point of positive outcome, AGGIECHILLERTECH, you will of course let us knwo when you have completed the repairs and of any further shut downs...........

    Its been fun and reall, next time lets make it reall fun !!

  10. #88
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    1,848
    The hockey puck is the slide valve piston c/w seals .
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  11. #89
    Join Date
    Nov 2011
    Location
    South Texas
    Posts
    60
    Thanks for the input. My customer ok'd slide valve rebuild and parts are on order. As soon as it's done I will let everyone know but I'm positive it will be good to go afterwards. I apologize for not getting back with anyone earlier the holidays were kinda hectic.

    In the middle of all of that we went for our first sonogram last week to see our new little one at ten weeks of progress along only to find out we'd be having a miscarriage instead.

    Thanks again. jayguy graham r123 and all of the others who have donated ideas and time to helping me get to the bottom of this.

  12. #90
    Join Date
    Mar 2005
    Posts
    663
    if the chiller is short cycling so much ,due to low load / gross oversize, you need to disable one circuit, and probably have a monthly schedule to change between them, This is a school right? Im almost positive RTAA has "current limit " parameter that will allow you to say keep at 50-60% for longer run cycles, the question I have is why are they even running all night long and so early? Im very sorry to hear about your baby , that cant be easy compiled with a stressful job, stan
    Keep it simple to keep it cool!

  13. #91
    Join Date
    Nov 2011
    Location
    South Texas
    Posts
    60
    This unit does several buildings and has a ancient EMS system on the complex. Usually this time of year it's off more than it's on even during the day. But early in the morning around 4 everything starts coming out of night setback to get rooms down to temp and that's usually when it trips. Even then at full load it runs about 15-20 minutes and shuts off.

    Todays better than it has been since wednesday when we found out. The wife is definitely in better spirits.

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