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  1. #1
    Join Date
    Dec 2012
    Location
    Hamilton Ontario Canada
    Posts
    103

    Have a leaker CVHE ,

    Have a leak on one of the chillers ,I know how to heat pack and find leaks but do you guys ever go around your chiller and torque all you bolts down as like a yearly inspection type thing and if you do does anyone have the torque Specs. Cant find it anywhere in my O&M manual.

    thanks in advance

  2. #2
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,079
    Yes , they should be checked once a year , as for torque specs . My torque wrench is built into my right forearm . use your common sense and dont try to get 130 ft lbs on a 5/16 bolt and you will be fine . Tight is tight , to tight is broke .
    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 .

  3. #3
    Join Date
    Dec 2012
    Location
    Hamilton Ontario Canada
    Posts
    103
    Thanks Healey Nut , I dont know if I have the feel and dont wanna be the guy that snapped the econimizer bolt off , there has to be some sort of bolt to torque ratio.I would feel better knowing that I followed the specs and if something goes wrong at least I can say I followed the Trane specs.

  4. #4
    Join Date
    Dec 2012
    Location
    Hamilton Ontario Canada
    Posts
    103
    found this online


    Recommended Torque
    Grade 2 Grade 5 Grade 8 18-8 S/S Bronze Brass
    Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine Coarse Fine
    #4* - - - - - - 5.2 - 4.8 - 4.3 -
    #6* - - - - - - 9.6 - 8.9 - 7.9 -
    #8* - - - - - - 19.8 - 18.4 - 16.2 -
    #10* - - - - - - 22.8 31.7 21.2 29.3 18.6 25.9
    1/4 4 4.7 6.3 7.3 9 10 6.3 7.8 5.7 7.3 5.1 6.4
    5/16 8 9 13 14 18 20 11 11.8 10.3 10.9 8.9 9.7
    3/8 15 17 23 26 33 37 20 22 18 20 16 18
    7/16 24 27 37 41 52 58 31 33 29 31 26 27
    1/2 37 41 57 64 80 90 43 45 40 42 35 37
    9/16 53 59 82 91 115 129 57 63 53 58 47 51
    5/8 73 83 112 128 159 180 93 104 86 96 76 85
    3/4 125 138 200 223 282 315 128 124 104 102 118 115
    7/8 129 144 322 355 454 501 194 193 178 178 159 158
    1† 188 210 483 541 682 764 287 289 265 240 235 212
    * Sizes from 4 to 10 are in lb-in.
    Sizes from 1/4 up are in lb-ft.

  5. #5
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,104
    On flanges with gaskets I tighten the bolts until I see the gasket just start to squeeze out, then I give it about another half turn. On R11 machines I stop when the gaskets begin to squeeze out (R11 gaskets are softer). Then during the leak test, if it leaks I tighten a little more until it stops leaking. I rarely, if ever have to tighten it that second time. I do this because it's possible to distort some of those gaskets.

  6. #6
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,611
    Metal to metal fits don't need to be retorqued to stop a leak. Economizer flange bolts I believe are 3/8" rated at 35 lbs/ft +/-. Don't crush or squeeze the gaskets out of the fit or you'll just defeat the purpose.

  7. #7
    Join Date
    Dec 2012
    Location
    Hamilton Ontario Canada
    Posts
    103
    Guys do the metal to metal fits come loose from vibration , is it a good idea to go over the chiller before you heat pack it.

  8. #8
    Join Date
    Dec 2012
    Location
    Hamilton Ontario Canada
    Posts
    103
    So Klove if theres a leak on the Trane o-ring you just have to replace it , do the bolts come loose from vibration and then you dont have metal to metal contact is that possible .

  9. #9
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,438
    Quote Originally Posted by Healey Nut View Post
    ...My torque wrench is built into my right forearm....
    i'm glad i'm not your weiner!
    How to make the perfect "Half-Hitch" knot or any other boyscout knot in 3 easy steps...

    1. Remove your meter leads from the meter and very carefully return them to their storage case or bag.
    2. Wait 2 seconds
    3. Very carefully remove your meter leads from their storage place and enjoy your new knot!

  10. #10
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,079
    Quote Originally Posted by Troy Love View Post
    Thanks Healey Nut , I dont know if I have the feel and dont wanna be the guy that snapped the econimizer bolt off , there has to be some sort of bolt to torque ratio.I would feel better knowing that I followed the specs and if something goes wrong at least I can say I followed the Trane specs.
    You had better learn to develop "a feel" and quick . Not sure if you have taken the time to look but some of the flat gaskets are not really accesible with a 18" long torque wrench ,plus if you start adding extensions and wobble drives and knuckle joints your torque setting is out the window . And if you have vibration on a Trane centravac you have much bigger problems to worry about than a leaking O ring as it will becoming apart for a whole teardown .
    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. #11
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,079
    Quote Originally Posted by jayguy View Post
    i'm glad i'm not your weiner!
    Foot pounds in the right arm , inch pounds on the left .
    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 .

  12. #12
    Join Date
    Sep 2008
    Location
    A land down under
    Posts
    309
    Quote Originally Posted by Troy Love View Post
    Have a leak on one of the chillers ,I know how to heat pack and find leaks but do you guys ever go around your chiller and torque all you bolts down as like a yearly inspection type thing and if you do does anyone have the torque Specs. Cant find it anywhere in my O&M manual.

    thanks in advance
    Attached might help for reference factory flat gasket re-torque specsCTV-SVB17B-en_Torquing of Flat Gaskets.pdf
    Necessity is the mother of invention

  13. #13
    Join Date
    Dec 2012
    Location
    Hamilton Ontario Canada
    Posts
    103
    Thanks Screwit

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