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  1. #1

    Sealing vacuum leaks on old R-113 chiller

    I am in a serious pinch on a CVHA R-113 chiller that has multiple leaks. I found several small leaks but they obviously are enough to cause excessive purging issues. Years ago, we used to use a product to paint around flanges for a band-aid but I never knew the correct way to say/spell it. Kleptal or Gleptol or something close. Can anybody help me identify what the product was or something else that you can "paint" or coat around flanges to help slow vacuum leaks. Im working at a prison and this dang chiller has to run now. I would certainly appreciate any help.

  2. #2
    Join Date
    May 2010
    Posts
    1,291
    Who ever said criminals need cold air?

    Sorry though, I do not know the product.

    There is a product called "Glyptal" that's used to seal areas of an engine. Don't know if this is the same product you are referring to or not.

  3. #3
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    1,992
    I did a Google search and found what I think I once had. Called Tek-Seal from Vactek. Several things came up on Google. Take a picture of that machine. Once it's gone, you probably won't see another. I haven't seen one in years. Replacing that one is probably the best thing you can do for your customer. At the very least, update the purge unit, if it hasn't already been done. I prefer the Trane Purifier Purge myself. Make sure new purge is rated for R113. It will have a larger pumpout pump, capable of pumping from a deeper vacuum, as compared to the standard purge.

  4. #4
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,011
    Its called Glyptal ... but I would still let the stinking vermin sweat !!!!!!!!!!!!!!!!!!!!
    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 .

  5. #5
    Join Date
    Jun 2010
    Location
    Tampa, FL
    Posts
    101
    Bend over when you go for the Glyptal or just use vacuseal for a temporary fix until you can do a proper repair. As old as that thing is it's probably rusted through on the shell. JB weld will work on any positive pressure areas.

  6. #6
    Join Date
    Jan 2005
    Location
    Houston TX
    Posts
    873

    Sorry 'bout that chief

    deltap10- Don't worry about the JB weld for high pressure areas, as there is no such thing on a R-113 machine. The entire machine is in a vacuum, the high pressure switch trips at 2" hg vacuum. The CVHA using that refrigerant is just like an old spool machine. If anything I would try to save the nameplate.-GEO
    Once in a while everything falls into place and I am able to move forward, most of the time it just falls all over the place and I can't go anywhere-GEO

  7. #7
    Join Date
    Oct 2003
    Location
    tidewater, va
    Posts
    2,135
    loctite thread locker 08841. goes on like a liquid and when it hits vacuum it seals

  8. #8
    Thank you all for your input. I have to tell you guys this story cuz it may help somebody in future. I found out that I was the 3rd contractor that they called to fix this chiller. Our construction dept bid a cooling tower project and got it. Our salesman just happened to hand them info on our service dept and this was our 1st service call. I carefully re-torqued some of the gaskets--the 1st stage discharge flange had a couple of bolts I could turn by hand. After purging enough air to get it running, I was dealing with a huge evap approach temp(35 deg --I had to lower freeze stat to 25--it was tripping at 32 with leaving water at 65 deg and return at 66.5)They said the other Company dealt with this issue too and weighed in the charge. I pulled evap heads and brushed out tubes--a little bit of slime build up so I thought I had it. I told them to get their closed loop treated ASAP. Anyways, run chiller and still 35 deg approach. (Other Companies already distilled refrig as well trying to fix problem.) I adjusted flow to exact PD. While scratching my ass and pacing around chiller, I took sample of water while it's running and it came out white as milk,
    then cleared up. I have never seen air in water side that caused so much trouble. After putting Air separators on several of AHU's, water started clearing up and all of a sudden, water temp dropped from 65 to 47 deg in a matter of minutes. I can't believe that the heat transfer was that bad---I had frost forming on the barrel to try and get water temp lower. Back to the glyptal part of story--- I called every motor shop I knew to find some GLYPTAL now but found some at a mom & pop shop--they don't use it anymore and gave me a gallon. I worked 36 straight hrs on this POS!!! Next day, Chiller only purged 5 min in 4 hrs. Maint Engineer said I just had a new customer. He said that they have 4 more chillers just like it! Oh No, what have I done.

    Seriously, thank everybody for their time and help. I wish I were able to spend more time on here and help others---I will make sure to spend some time responding to others----it's a 2 way street. Thanks again.

  9. #9
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    1,992
    Hope you turned the freeze stat back up! 4 more just like it! Do they have the brass Trane logo on them? I might would consider buying a logo, if they would consider selling one....

  10. #10
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    1,992
    Almost forgot. Congrats on your success.

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