pguthrie
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 posted on 22-8-12 at 12:58 PM |
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Leaks stop leaking?
Hi everybody! Has anybody else had this problem?
I was out at a commercial pool in lee county, FL a few weeks back pressure testing a vacuum line. We confirmed it was leaking (dye pull and pressure
testing), but once we started using the xlt30 to pinpoint, the leak went away. We dye tested again - nothing. Pressure tested - nothing. This has
happened to us about 3 or 4 times in the last 3 months.
Anybody have any ideas as to what causes this?
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brrscuba
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![[*]](./images/corporate/default_icon.gif) posted on 22-8-12 at 06:27 PM |
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Small debris can clog the leak, turn the pump back on and suck full on that pipe to dislodge the debris
Then retest and proceed.
If it still passes, then don't go crazy, the leak will return pretty soon.
I have seen high pressure seal a leak, don't run too high, always control the pressure.
Every listening job is a little different, make it a learning experience
Bruce
PoolRepairDiver.com
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pguthrie
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| posted on 24-8-12 at 06:36 AM |
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Thanks Bruce!
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cgg90210
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| posted on 11-9-12 at 11:32 PM |
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I will bet the builder used a flex pvc line. Flex will "suck" out of a fitting when the pump is on but will expand when you induce pressure. I
recommend inducing low pressre(under 5 psi) and see if there is a drop. If so, try to induce air at the vac outlet and induce a small amount of water
from the equipment side. Try to make your guage needle bounce and then listen along the suspected pipe route. That or you are putting your
plug/inducer past the leak. Try putting a plug past the threaded fitting and dye testing the threads or glu joint to the threaded fitting.
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cgg90210
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| posted on 11-9-12 at 11:32 PM |
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I will bet the builder used a flex pvc line. Flex will "suck" out of a fitting when the pump is on but will expand when you induce pressure. I
recommend inducing low pressre(under 5 psi) and see if there is a drop. If so, try to induce air at the vac outlet and induce a small amount of water
from the equipment side. Try to make your guage needle bounce and then listen along the suspected pipe route. That or you are putting your
plug/inducer past the leak. Try putting a plug past the threaded fitting and dye testing the threads or glu joint to the threaded fitting.
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pguthrie
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| posted on 17-9-12 at 02:33 PM |
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Thanks cgg. when you are inducing, do you have some sort of regulator, or do you have another body running the pressure rig? I've been trying to
pinpoint it myself (setting the air to say, 10 psi and then using the xlt-30 to listen), but have had little to no sucess doing it.
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Poolman
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| posted on 18-9-12 at 11:55 AM |
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Had a cut on the side of a flex pipe, under suction pulled in air under pressure no loss. Soultion an overlay....
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thepoolsitter
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| posted on 18-9-12 at 06:45 PM |
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Overlay ?
What is an overlay?
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cgg90210
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| posted on 24-9-12 at 08:52 PM |
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Overlay?
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brrscuba
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| posted on 25-9-12 at 06:19 AM |
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Perhaps he is using a Clip On, or a Snap Lock fitting, either is glued on and overlays the leaking area
Bruce
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pguthrie
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| posted on 26-9-12 at 05:41 AM |
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No, as far as i can tell it isn't an overlay. I haven't been called back out to the property yet, but when I do I'll post the results.
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Poolman
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| posted on 20-10-12 at 02:37 AM |
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Overlay, overlay the old pipe with a new one ! 
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cgg90210
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| posted on 13-4-13 at 11:26 PM |
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Huh? Are you saying sleeving a smaller pipe through existing plubing???? Can u explain overlay a little better?
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